Friend of mine has a 22K mile 2.4L longblock/Tranny/Ecu for sale for 800 dollars. What i'd really like to do is buy that combo and swap it into my ion and turbo it for a kickass DD. My main questions are as follow's :

1. How much power can the Automatic handle?
2. How much power can the stock shortblock handle?

I'd like to shoot for 300whp with good spool characteristics. Thanks

Edit : Don't know what happened to the original thread i posted.

1. automatic ftl.... not the answer your looking for but the one we are most thinking
2. im sure you can pull 300 out of it on turbo boost only. the heat from a m62 is to dangerous that high up

1. automatic ftl.... not the answer your looking for but the one we are most thinking
2. im sure you can pull 300 out of it on turbo boost only. the heat from a m62 is to dangerous that high up

1. I don't care what everyone thinks about it. A turbo'd 2.4L auto would destroy the majority of sc/ss guys anyway :lol:

and a turboed ss??? would do what?

apples to oranges

and a turboed ss??? would do what?

apples to oranges

They'd run very close. All i hear is how everyone thinks the auto is bad and slow.

I don't want anyone's opinion on the auto. All i want to know is how much power it can handle

I got a ss/sc and i wish it was a auto. i heard they handle 300 as well the guys to talk to is , level 10 performance

1. automatic ftl.... not the answer your looking for but the one we are most thinking


totally not necessary dude. thats on par with the threads titled "how can i get the most power out of my SS" and your the kid who comes in and says "buy a real car/v8"

to answer the OP's questions...the stock auto tranny is rated for 315tq, can probably handle 350tq safely, and 400tq if you wanna really push it. I know of a couple guys running like 330wtq, which would be 390btq.
As for the engine, thats a little unclear to me, but the engine will probably need to be built with some internals before the transmission will.
Keep in mind, the transmission will REQUIRE a tune if you are making a significant amount more HP than stock, or it will die on you

totally not necessary dude. thats on par with the threads titled "how can i get the most power out of my SS" and your the kid who comes in and says "buy a real car/v8"

to answer the OP's questions...the stock auto tranny is rated for 315tq, can probably handle 350tq safely, and 400tq if you wanna really push it. I know of a couple guys running like 330wtq, which would be 390btq.
As for the engine, thats a little unclear to me, but the engine will probably need to be built with some internals before the transmission will.
Keep in mind, the transmission will REQUIRE a tune if you are making a significant amount more HP than stock, or it will die on you

Thanks hunter for the info i was looking for. Custom forged pistons and rods are a must and i'm not going to half-ass it.

Can HPT tune the tranny? What would need to be changed in the tranny that would require a tune?

Thanks hunter for the info i was looking for. Custom forged pistons and rods are a must and i'm not going to half-ass it.

Can HPT tune the tranny? What would need to be changed in the tranny that would require a tune?

HPT can tune the tranny, yea. You will need to increase the line pressure to the shift packs during WOT or even heavy throttle shifts.

This is how i recall halfcent explaining it to me (and he knows a shitload about our tranny):
If you're driving your car like stock, the tranny will slip the clutch packs (similar to slipping the clutch) to make a smooth shift. It does this at WOT when stock as well, though to a lesser extent. If your pushing a decent amount of extra power however, the clutch pack engaging so slowly while trying to grip all that power will cause the clutch pack to slip a lot more than intended, which will wear out the clutch pack. The more extra power you push, the more line pressure you need to run during shifts so the clutch pack will clamp down and hold that power instead of slipping the clutch pack.

I hope that made sense. Its a simple thing to tune for, but very important that you do it for the tranny
im off to bed tho, ill answer any other questions you have in the morning

HPT can tune the tranny, yea. You will need to increase the line pressure to the shift packs during WOT or even heavy throttle shifts.

This is how i recall halfcent explaining it to me (and he knows a shitload about our tranny):
If you're driving your car like stock, the tranny will slip the clutch packs (similar to slipping the clutch) to make a smooth shift. It does this at WOT when stock as well, though to a lesser extent. If your pushing a decent amount of extra power however, the clutch pack engaging so slowly while trying to grip all that power will cause the clutch pack to slip a lot more than intended, which will wear out the clutch pack. The more extra power you push, the more line pressure you need to run during shifts so the clutch pack will clamp down and hold that power instead of slipping the clutch pack.

I hope that made sense. Its a simple thing to tune for, but very important that you do it for the tranny
im off to bed tho, ill answer any other questions you have in the morning

Made perfect sense hunter. Who's the most knowledgeable on this site when it comes to turbo's? I'm looking for a budget turbo that will deliver excellent spool and 350whp on 20psi of boost.

I'm no turbo genius, but I'd recommend a GT2871R. Would spool pretty quick and power until 460 hp.

http://www.turbobygarrett.com/turbobygarrett/catelog/Turbochargers/GT28/GT2871R_472560_15.htm

I'm no turbo genius, but I'd recommend a GT2871R. Would spool pretty quick and power until 460 hp.

http://www.turbobygarrett.com/turbobygarrett/catelog/Turbochargers/GT28/GT2871R_472560_15.htm

I love that turbo but am kinda looking for a "Budget" friendly turbo. GT28R would be perfect if it wasn't 900 dollars.

It depends are you looking for a turbo kit or just a turbo?

A used mitsu 18g or 20g might be just what you're looking for then. I don't think a 16g will flow enough for 350 whp.

If you want to keep it Garrett all the way, a 50 trim stg 3 .63 ar would spool up very nicely and would support those goals.

http://www.atpturbo.com/Merchant2/merchant.mvc?Screen=PROD&Product_Code=GRT-TBO-060&Category_Code=TBN

i'll chime in later.. lol

A note to all the auto tranny haters, you are more than welcome to run me.

To the OP, I've heard mixed reviews. However I know at (http://media.gm.com/division/2005_prodinfo/powertrain/transmissions/05_auto_trans_specs.html)

This says: 220ft/lbs of torque is max.

This is inacurate as i've been well over 300 for over a year and have had 0 issues.

For 300whp, you'll be fine. As i'll be at 330-350whp soon.

and a turboed ss??? would do what?

apples to oranges

theyd be pretty much the same, if not the 2.4 be better at the same boost levels than the 2.0............................................... ...................................not apples to oranges

The 2.0 would be faster because the engine's built for boost, whereas we're kind of limited.

totally not necessary dude. thats on par with the threads titled "how can i get the most power out of my SS" and your the kid who comes in and says "buy a real car/v8"

to answer the OP's questions...the stock auto tranny is rated for 315tq, can probably handle 350tq safely, and 400tq if you wanna really push it. I know of a couple guys running like 330wtq, which would be 390btq.
As for the engine, thats a little unclear to me, but the engine will probably need to be built with some internals before the transmission will.
Keep in mind, the transmission will REQUIRE a tune if you are making a significant amount more HP than stock, or it will die on you

yes the auto is more than strong enough to reliably handle 300hp, but i would add in a tranny cooler to help out and be extra safe.

Thanks hunter for the info i was looking for. Custom forged pistons and rods are a must and i'm not going to half-ass it.

Can HPT tune the tranny? What would need to be changed in the tranny that would require a tune?

with proper internals the 2.4 will be virtually indestructable up to 400-450hp depending on the type of internal metal you use. i can list off a couple features the 2.4 has that the 2.0 doesnt which makes the 2.4 look even better...but i will say this...the 2.4 le5 comes from an original saab design that was built to handle boost...these motors have repeatdly seen high hp and boost levels and very very few have been busted...thats more than what a 2.0 can say...

i'll chime in later.. lol

kyle your just gonna back me up so i saved you some work. lol

I love that turbo but am kinda looking for a "Budget" friendly turbo. GT28R would be perfect if it wasn't 900 dollars.

honestly, the turbo and the wastegate are the two things i would not do cheaply. everything else, go ahead and buy budget parts. thats just IMO though



To the OP, I've heard mixed reviews. However I know at (http://media.gm.com/division/2005_prodinfo/powertrain/transmissions/05_auto_trans_specs.html)

This says: 220ft/lbs of torque is max.

This is inacurate as i've been well over 300 for over a year and have had 0 issues.



GM rated it for 315tq :)

The 2.0 would be faster because the engine's built for boost, whereas we're kind of limited.

the 2.0 has no benefit over the 2.2 as far as boost goes. less displacement and lower compression. The cam timing slightly benefit the 2.0, but its negligible, and the only other big differences are oil squirters and sodium filled exhaust valves, which really dont benefit performance, theyre more for reliability

Thank you EVERYONE for the info. I'm buying it from him tonight and will be starting the project next weekend. :)

One main question. How the hell can ebay turbo's exist for 200 dollars when Garrett turbo's are 1000 dollars? Are the ebay turbo's made of plastic? :lol:

How much is my LSJ worth? It only has 19K miles. I imagine someone would be very interested in the full supercharger setup.

honestly, the turbo and the wastegate are the two things i would not do cheaply. everything else, go ahead and buy budget parts. thats just IMO though



GM rated it for 315tq :)



the 2.0 has no benefit over the 2.2 as far as boost goes. less displacement and lower compression. The cam timing slightly benefit the 2.0, but its negligible, and the only other big differences are oil squirters and sodium filled exhaust valves, which really dont benefit performance, theyre more for reliability

The internals are stronger is what I was getting at. You're not going to see any 2.2 guys running 400+ whp on stock bottom end. They can turn up the boost without a lot of problems.

And yeah, there's something wrong with any turbo less than about 400. Those ebay turbo's are a bunch of Chinese knock off junk. Some are even glued together and fall apart the same day as installed. There's a reason why it's so cheap.

honestly.. 2.4's a GREAT motor.. that being said.. you could very easily turbo the LSJ and get great results too .. IMO swapping is a silly idea because by the time you get done with everything it will cost more..

2.4's have proved themselve as capable.. but the question is it worth the 800 plus labor and turbo equip? just to have something that could've been bought stock.. YES you can sell off all your stock parts and make money for it but it's really a questoin of if it's worth the work.. stock 2.4 should be handling 350 whp on a good tune .. tranny should be able to handle around that with tranny cooler

but on the other hand a turbo swapped LSJ can do that as well it's really what YOU want to do .. you can get the same results on either platform ..

honestly.. 2.4's a GREAT motor.. that being said.. you could very easily turbo the LSJ and get great results too .. IMO swapping is a silly idea because by the time you get done with everything it will cost more..

2.4's have proved themselve as capable.. but the question is it worth the 800 plus labor and turbo equip? just to have something that could've been bought stock.. YES you can sell off all your stock parts and make money for it but it's really a questoin of if it's worth the work.. stock 2.4 should be handling 350 whp on a good tune .. tranny should be able to handle around that with tranny cooler

but on the other hand a turbo swapped LSJ can do that as well it's really what YOU want to do .. you can get the same results on either platform ..

No labor charges here elec :lol: This swap will be done by myself and a few friends. I think the LSJ is a sweet engine but i really want the automatic and the added displacement.

No labor charges here elec :lol: This swap will be done by myself and a few friends. I think the LSJ is a sweet engine but i really want the automatic and the added displacement.

well then have fun lol .. :D if theres no labor you could probably have the whole thing for free after selling all your stock parts and such :twothumbs :lol:

well then have fun lol .. :D if theres no labor you could probably have the whole thing for free after selling all your stock parts and such :twothumbs :lol:

It's going to be a pain in the ass but it should be fun. I paid him tonight and he'll be dropping it off for me tomorrow so "hopefully" i'll get some of the prep work done tomorrow. Still have to see about rods and pistons.

Onto turbo selection. Thinking about a GT3071R. Any idea's on power output at 20psi?

The auto is strong. I have been boosted for over 2 years now on it.

It's going to be a pain in the ass but it should be fun. I paid him tonight and he'll be dropping it off for me tomorrow so "hopefully" i'll get some of the prep work done tomorrow. Still have to see about rods and pistons.

Onto turbo selection. Thinking about a GT3071R. Any idea's on power output at 20psi?

My friend swapped a GT3071R onto his LNF and he's pushing roughly 400whp at 20psi. You might want to tune that down if your running it on a 2.4L, lol.

My friend swapped a GT3071R onto his LNF and he's pushing roughly 400whp at 20psi. You might want to tune that down if your running it on a 2.4L, lol.

I'm going to forge the shortblock so 20 psi doesn't scare me. 400whp you say. Sounds good to me. I think i'm decided on a turbo.

My friend swapped a GT3071R onto his LNF and he's pushing roughly 400whp at 20psi. You might want to tune that down if your running it on a 2.4L, lol.

Is his car a cobalt? Because im pretty sure they cant do that.

And to whoevers been asking,

My car is faster, more fun to drive than people who've spent many thousands on their car.

Is his car a cobalt? Because im pretty sure they cant do that.

And to whoevers been asking,

My car is faster, more fun to drive than people who've spent many thousands on their car.

Turbo,

What turbo are you running and at what psi?

if you're getting rods and pistons you should be fine at that much ... :D and considering the extra displacement and CR of the 2.4 it'll probably spool alright at least better then the lnf

if you're getting rods and pistons you should be fine at that much ... :D and considering the extra displacement and CR of the 2.4 it'll probably spool alright at least better then the lnf

Thats what i'm really worried about elec. I want good spool. I'll gladly concede alittle top end power for excellent spool. I'll hate myself if i buy a laggy as shit turbo.

Is his car a cobalt? Because im pretty sure they cant do that.

And to whoevers been asking,

My car is faster, more fun to drive than people who've spent many thousands on their car.

Dude, you're full of bullshit, pay everyone back and leave.

I'm going to forge the shortblock so 20 psi doesn't scare me. 400whp you say. Sounds good to me. I think i'm decided on a turbo.

Ahhh, nice. I was thinking of building my engine internals and then taking my friends GT30 when he upgrades to a GT35.

Thats what i'm really worried about elec. I want good spool. I'll gladly concede alittle top end power for excellent spool. I'll hate myself if i buy a laggy as shit turbo.

There's MAYBE a half second of turbo lag on my friends LNF w/ the GT30. It's hardly noticeable, just a lot of freaking power!

Thats what i'm really worried about elec. I want good spool. I'll gladly concede alittle top end power for excellent spool. I'll hate myself if i buy a laggy as shit turbo.

if your building your motor and your considering keeping the same compression levels etc. you may want to look into the gt2871rs i believe? kyle i think you know what it is...its what i plan to go with.

Dude, you're full of bullshit, pay everyone back and leave.

And what the hell are you talking about?

Turbo,

What turbo are you running and at what psi?


GT28RS, 12psi

Dude, you're full of bullshit, pay everyone back and leave.



Ahhh, nice. I was thinking of building my engine internals and then taking my friends GT30 when he upgrades to a GT35.



There's MAYBE a half second of turbo lag on my friends LNF w/ the GT30. It's hardly noticeable, just a lot of freaking power!

should be even better on a 2.4 then :twothumbs

if your building your motor and your considering keeping the same compression levels etc. you may want to look into the gt2871rs i believe? kyle i think you know what it is...its what i plan to go with.

I'm still up in the air over what compression ratio i want to run.

And what the hell are you talking about?

3 people on here have bought items from you which they have never received. I find it hard to believe these 3 would get together to make a claim on someone they don't even know. Also, there are several Cobalts on this site running GT3071r's. It is very very possible. And oh yea, where's your video and timeslip of your 12.9? I'm amazed you haven't been banned.

/thread jack.

I'm still up in the air over what compression ratio i want to run.

stock.. lol go big or go home lol .. if i blow up i'm redoing it stock CR ... unless you're planning on pushing like high 20s I wouldn't think you'd need to goto 8.9:1 CR the LOWEst i'd drop to is like 10:1 instead of 10.4:1

3 people on here have bought items from you which they have never received. I find it hard to believe these 3 would get together to make a claim on someone they don't even know. Also, there are several Cobalts on this site running GT3071r's. It is very very possible. And oh yea, where's your video and timeslip of your 12.9? I'm amazed you haven't been banned.

/thread jack.


Who are the 3 people? Im curious to know.

Tinknocker isnt able to provide any sort of proof that he paid me. I have looked at my old pm's and see nothing from him. I know at one time he was inquiring about it. But I sold it to someone else who I am personally dealing with.

should be even better on a 2.4 then :twothumbs

Ya, I was thinking of running a small turbo set up until he goes for more power and I'd just take his.

stock.. lol go big or go home lol .. if i blow up i'm redoing it stock CR ... unless you're planning on pushing like high 20s I wouldn't think you'd need to goto 8.9:1 CR the LOWEst i'd drop to is like 10:1 instead of 10.4:1

There is no way in hell i'm going to run 20psi on a 10.4:1 compression ratio :lol: I don't know how low i want to go yet.

Who are the 3 people? Im curious to know.

Tinknocker isnt able to provide any sort of proof that he paid me. I have looked at my old pm's and see nothing from him. I know at one time he was inquiring about it. But I sold it to someone else who I am personally dealing with.

you sold the same wideband to 2 people who never received it and a now I hear you supposedly sold your turbo kit to some1. I'm not gonna argue with you over it but you should really have it all cleared up by now if you really didn't scam them. I'm also not digging up the name's they've pm'd you about it themselves so you'd know who they are. I believe they've all posted in your 12.9 thread which still has no proof you ran a 12.9

you sold the same wideband to 2 people who never received it and a now I hear you supposedly sold your turbo kit to some1. I'm not gonna argue with you over it but you should really have it all cleared up by now if you really didn't scam them. I'm also not digging up the name's they've pm'd you about it themselves so you'd know who they are. I believe they've all posted in your 12.9 thread which still has no proof you ran a 12.9

Please read my last comment on the 12.9 thread. I said since i cant provide proof at this time, because for whatever reason the video comes out beyond shitty, or doesnt come up at all. I am retracting my claim.

As for your comment, I just recently bought me a wideband which would of been my 1st. So how could I of sold a wideband to 2 different people..that I didnt have?

As for the Interceptor gauge, It was pending sale with my turbo kit to a member. Who then decided to not live up to his end of the deal, and decided to call my wife and bitching at her. I told him to sue me, and he'll get his money back. Which he did.

I wouldnt of sold the interceptor gauge for $180 as tinknocker claims. Considering you can get a brand new one for that much.

Just to further discredit tinknocker, as his sig clearly claims $180.

This was pulled from my old for sale thread.

"Aeroforce Interceptor (2.2/2.4L -- Blue/Black Display w/ Black Face/Black Bezel): $150 shipped. SOLD" which was sold to another member and not him.

Please read my last comment on the 12.9 thread. I said since i cant provide proof at this time, because for whatever reason the video comes out beyond shitty, or doesnt come up at all. I am retracting my claim.

As for your comment, I just recently bought me a wideband which would of been my 1st. So how could I of sold a wideband to 2 different people..that I didnt have?

As for the Interceptor gauge, It was pending sale with my turbo kit to a member. Who then decided to not live up to his end of the deal, and decided to call my wife and bitching at her. I told him to sue me, and he'll get his money back. Which he did.

I wouldnt of sold the interceptor gauge for $180 as tinknocker claims. Considering you can get a brand new one for that much.

Alright, I apologize, I meant the interceptor not a wideband. It's still odd that 2 people have claimed for quite a while that you owe them an interceptor or their money back. You still running your turbo set up though?

Get This Shit Outta Here

There is no way in hell i'm going to run 20psi on a 10.4:1 compression ratio :lol: I don't know how low i want to go yet.

why not .. lol hahn did it ? i'm going to try to do it on my procharger lol .. if i pop i pop lol

Get This Shit Outta Here



why not .. lol hahn did it ? i'm going to try to do it on my procharger lol .. if i pop i pop lol

:lol:

I don't want it to pop tho :lol:

:lol:

I don't want it to pop tho :lol:

if you have a built motor and a good tune you wont lol

http://www.turbosystem.com/ProjectVehicles/New_Folder/Bills%20Stg%20IV%20Soul%20Food%20Solstice.jpg
"And last, but not least, the Big Dog...Soul Food Stage IV Solstice showing what a stock 2.4L Ecotec bottom end can take without a whimper! This is the combo capable of high 11 second 1/4 mile passes. Not for the meek, but wow, what a feeling!" this setup is approximately 440CHP on a stock car... figuring about 17% RWD drivetraine loss

not to mention something is up with that tune as the power drops right where it should peak

thats the kit they are selling which was backed off from 408 whp

Alright, I apologize, I meant the interceptor not a wideband. It's still odd that 2 people have claimed for quite a while that you owe them an interceptor or their money back. You still running your turbo set up though?

Correct. After the incident with ssbolt, i put the kit back on

if you have a built motor and a good tune you wont lol

[IMG REMOVED FOR QUOTE]
"And last, but not least, the Big Dog...Soul Food Stage IV Solstice showing what a stock 2.4L Ecotec bottom end can take without a whimper! This is the combo capable of high 11 second 1/4 mile passes. Not for the meek, but wow, what a feeling!" this setup is approximately 440CHP on a stock car... figuring about 17% RWD drivetraine loss

not to mention something is up with that tune as the power drops right where it should peak

thats the kit they are selling which was backed off from 408 whp

Although thats impressive. Still worried about the tranny.

Correct. After the incident with ssbolt, i put the kit back on



Although thats impressive. Still worried about the tranny.

So how much hp/tq are you pushing through your 2.4L? Stock internals?

Last time I dynoed, i was at 268whp / 323 ft/lbs.

This was before the increase in boost from 7 psi to 13psi

Last time I dynoed, i was at 268whp / 323 ft/lbs.

This was before the increase in boost from 7 psi to 13psi

Nice, I'm looking at maybe getting the ZZP turbo kit to put me around 300whp.

if you have a built motor and a good tune you wont lol

http://www.turbosystem.com/ProjectVehicles/New_Folder/Bills%20Stg%20IV%20Soul%20Food%20Solstice.jpg
"And last, but not least, the Big Dog...Soul Food Stage IV Solstice showing what a stock 2.4L Ecotec bottom end can take without a whimper! This is the combo capable of high 11 second 1/4 mile passes. Not for the meek, but wow, what a feeling!" this setup is approximately 440CHP on a stock car... figuring about 17% RWD drivetraine loss

not to mention something is up with that tune as the power drops right where it should peak

thats the kit they are selling which was backed off from 408 whp

I want to build this to last and not have to worry about a high static compression ratio and boost. I'm thinking about 9.5:1 but my gut tells me to order 8:1's. 8:1's will allow for LOTS of boost. :)

Why 8:1? Because my old LT1 had a 10.5:1 compression ratio and that fucker blew up with 5psi of boost.

I want to build this to last and not have to worry about a high static compression ratio and boost. I'm thinking about 9.5:1 but my gut tells me to order 8:1's. 8:1's will allow for LOTS of boost. :)

Why 8:1? Because my old LT1 had a 10.5:1 compression ratio and that fucker blew up with 5psi of boost.

sense when is an LE5 ANYTHING like an LT1?... and 8:1 will kill any thought of torque you had for your car..

you want 300 or so whp .. you will NOT need to be runnning extreme amounts of boost for that

stock.. lol go big or go home lol .. if i blow up i'm redoing it stock CR ... unless you're planning on pushing like high 20s I wouldn't think you'd need to goto 8.9:1 CR the LOWEst i'd drop to is like 10:1 instead of 10.4:1

im planning on 9.5:1 for 400whp :)

im planning on 9.5:1 for 400whp :)

you guys ARE aware that some of the most powerfull lsj's are running 10:1 CR right? but i don't know any of them that are running on lower CR

1. automatic ftl.... not the answer your looking for but the one we are most thinking


most ignorant statement ever:spam: ever wonder why the majority of 11.00 or faster cars are auto's?

sense when is an LE5 ANYTHING like an LT1?... and 8:1 will kill any thought of torque you had for your car..

you want 300 or so whp .. you will NOT need to be runnning extreme amounts of boost for that

I changed my stance on how much power i'm looking for. I originally wanted 300whp. I'm thinking about 400whp now. :)

I changed my stance on how much power i'm looking for. I originally wanted 300whp. I'm thinking about 400whp now. :)

still shoudln't need over 20 psi on the right turbo for that. lol .. look at the 60-1 like 06blackg85ss has and a few others.. on his LSJ with stock compression and a smaller motor he's making over 400 whp ...

bigolred is using the same turbo on less boost and not as extensive of a setup and is pushing 390 whp

you guys ARE aware that some of the most powerfull lsj's are running 10:1 CR right? but i don't know any of them that are running on lower CR

its only a slight drop, and its due mostly to the fact that i wont have the efficiency of a GT3071 or anything...im staying supercharged. I MAAAY go like 9.8:1, or somewhere else between my stock 10:1 and LSJ 9.5:1, but i havent really decided

its only a slight drop, and its due mostly to the fact that i wont have the efficiency of a GT3071 or anything...im staying supercharged. I MAAAY go like 9.8:1, or somewhere else between my stock 10:1 and LSJ 9.5:1, but i havent really decided

oh i forgot you have the 2.2 so yea it's not much of a drop at all

Elec,

Going to hate me but i'm going with 8:1. I WANT to run 9.5:1 but i'm building this motor to withstand a lot of boost and i would have worried about boost levels and durability at 20 Psi+ with that compression ratio. THIS way i ran run a shitload of boost and not even worry about it. :lol:

Still leaning towards a GT3071R BUT not sure what A/R. How much hp would i be losing out with a .48 A/R versus a .63 A/R?

Elec,

Going to hate me but i'm going with 8:1. I WANT to run 9.5:1 but i'm building this motor to withstand a lot of boost and i would have worried about boost levels and durability at 20 Psi+ with that compression ratio. THIS way i ran run a shitload of boost and not even worry about it. :lol:

Still leaning towards a GT3071R BUT not sure what A/R. How much hp would i be losing out with a .48 A/R versus a .63 A/R?

You know Hahn's first car had 400 hp and 297 torque. Care to know why?

They were running 8:1, and it absolutely killed the torque. 8.9:1 is low enough, if you blow up on that, then it's likely you would have blown up on 8:1 too, lol. Trust me, it's a terrible compression, way too low.

With that A/R, you would spool super fast, but it might run out of breath before you reach 400. I recommend the .63 ar.

You know Hahn's first car had 400 hp and 297 torque. Care to know why?

They were running 8:1, and it absolutely killed the torque. 8.9:1 is low enough, if you blow up on that, then it's likely you would have blown up on 8:1 too, lol. Trust me, it's a terrible compression, way too low.

What A/R and how much boost were they running? Hmm.. 9:1 is sounding better and better by the minute.

What A/R and how much boost were they running? Hmm.. 9:1 is sounding better and better by the minute.

That's 21 psi on 8.1:1 compression on their S20G I believe.

yea man you REALLY dont need that low of compression you'll be very dissatisfied with the results I think the whole point of building the engine it so make it handle the power.. if you have quality parts.. a good tune.. and it installed correctly...even a 10.4:1 compression will be fine

8:1 is a bad idear lol the lowest i would go is AT MOST 9:1 but honestly i'd look for 9.5:1 or so theres a reason thats what the lnf's use lol

I remember reading somewhere that the solstice drift car that someone famous was drivin, or it was gm's was something like 15:1 or something rediculous. That was turboed as well.

That's 21 psi on 8.1:1 compression on their S20G I believe.

I just searched for it. They made 440/297 at 21psi with a GT35R. Didn't make power till 5000rpm.. Yuck

I remember reading somewhere that the solstice drift car that someone famous was drivin, or it was gm's was something like 15:1 or something rediculous. That was turboed as well.

i think it's like 12:1 but runs on a hardcore meth setup or something

Elec,

Going to hate me but i'm going with 8:1. I WANT to run 9.5:1 but i'm building this motor to withstand a lot of boost and i would have worried about boost levels and durability at 20 Psi+ with that compression ratio. THIS way i ran run a shitload of boost and not even worry about it. :lol:

Still leaning towards a GT3071R BUT not sure what A/R. How much hp would i be losing out with a .48 A/R versus a .63 A/R?

well putting a number on the horsepower levels youl gain between different size housings is hard to really even do. it would make more sense to meter(judge) the size of the housing in comparison to your powerband. a bigger housing is going to put most of your power up top giving you slower spool. a smaller housing is going to spool a bit quicker and peak boost quicker ending your power band. take it for what its worth.....with low compression and such a big turbo your not going to be satisfied.

i think it's like 12:1 but runs on a hardcore meth setup or something

dont mind this nOoB

I just searched for it. They made 440/297 at 21psi with a GT35R. Didn't make power till 5000rpm.. Yuck

hehe you believe me yet ;)

Was doing some thinking and i'm NOT going with different internals. I've decided to go with a thicker head gasket to reduce compression and if it blows up i'll be doing a full rebuild. :)

Kinda toning down the 400whp goal to 330-350whp to be realistic and make it a decent DD.

Was doing some thinking and i'm NOT going with different internals. I've decided to go with a thicker head gasket to reduce compression and if it blows up i'll be doing a full rebuild. :)

Kinda toning down the 400whp goal to 330-350whp to be realistic and make it a decent DD.

YEYYY smart idear :D

The swap has started. Front end is off and the radiator/coolant lines have been disconnected. I hope to have it out by friday night. :)

good luck with the build.

good luck man :D can't wait to see the results with boost on there

Turbo should be here tomorrow and i HOPE to have it running that night. Its going to be towed to a local shop to have a 3" catless DP and catback fabbed. :) THEN the tuning begins.

A baby update. The thicker head gasket came in this morning and will be installed today. The 3.5" catless DP is completed and BEAUTIFUL. Should be up and running tomorrow. Sucks i had to hand this project over to a friend's shop but work calls.

have you tried to fire everything up without it being boosted ? and 3.5" dp .. for less then 400 whp ?

yea that sounds a little too big of a downpipe diameter for your hp goals

have you tried to fire everything up without it being boosted ? and 3.5" dp .. for less then 400 whp ?

We're shooting for 15Psi so i'm hoping she'll make something in the area of 350whp at that boost.

you still dont need any bigger then a 3" DP for that

you still dont need any bigger then a 3" DP for that

The big dp is for the best spool. Not because i think i'd max out 3".

The big dp is for the best spool. Not because i think i'd max out 3".

spool will be taken care of mostly by the AR and charge piping... as well as manifold.. all the things leading up to the turbo ... a 3.5" dp isn't going to affect spool as much as those.. from what i recall the balts running 400+ hp are running 3" dps

spool will be taken care of mostly by the AR and charge piping... as well as manifold.. all the things leading up to the turbo ... a 3.5" dp isn't going to affect spool as much as those.. from what i recall the balts running 400+ hp are running 3" dps

TrOoF

If everyone hasn't seen the numbers. I have them in my sig. The car is done and i'll be picking it up midweek. Can't wait to beat down some TC ass :lol:

I've been told the turbo spools instantly and pulls to 6000rpm where the rev limiter is set. We're going to "try" and maintain the tranny for aslong as we can. :nuts:

im waaay skeptical of those torque numbers with that CR

im waaay skeptical of those torque numbers with that CR

I haven't seen the dyno sheet so i can't confirm. I don't think the car was running 20 psi. I think it might have been higher. It also could ofcourse be just a peak from a shift. Not worried at all. Can't wait to drive her.

I haven't seen the dyno sheet so i can't confirm. I don't think the car was running 20 psi. I think it might have been higher. It also could ofcourse be just a peak from a shift. Not worried at all. Can't wait to drive her.

im excited for you regardless, but historically on ecotecs, the ones that run less than a 9.0:1 CR have a significantly lower amount of torque than they do power

regardless, im sure it will be fun

im excited for you regardless, but historically on ecotecs, the ones that run less than a 9.0:1 CR have a significantly lower amount of torque than they do power

regardless, im sure it will be fun

i was thinking EXACTLY the same thing.. I posted this in one of his other threads lol .. if trq was about 100 lower that would sound about right

hell there are 2.4's with stok CR that aren't making that much wtrq lol