Well as my car sits now fully bolted, it makes a appreciable 351/377.


What kind of money all said and done would it take to get this car to run around 450whp reliably?


Obviously some sort of big turbo, new gearing... 4.55? New clutch, 5th injector, retune.. Internals?


What would you guys say a ballpark figure would be?

 

I would leave it alone and just drive it. Putting 450 hp to the ground is a challenge in fwd

 

I figured someone would say this at least once. I'm just savage I got trained by a big turbo sti -- looking like it would be a lot more expensive than I previously thought.

 

You're probably looking at about $10K to upgrade engine internals, turbo, fuel system and tranny.
I'm at 479whp and spent at least that, not counting handling/suspension mods.
I disagree that you can't put that power down in a FWD. You just need the right suspension mods and rubber.

 

Well that's one question that kmo has to answer since he made 481 I know he has meth but his internals are all stock. If I recall he has a southbend clutch

 

I thought the breaking point of Lnf internals was around 380-400?

 

I always took that as a guessing point and not actually being accurate, But I don't know for sure.

Free bump for an answer

 

Look at his mod list he has a ported head and some other parts but he's on stock internals.

 

You can find his mods here

https://www.cobaltss.net/forums/fron...-fcotm-319364/

 

im going to shoot for over 450whp on stock internals. but not till i get a built trans

 

Its different with every car. Some guys can run stock internals with 400+hp with no issues. Others blow their **** up with below 350. It has a lot to do with how you drive and your tune. As long as you dont go WOT all the time, then you should be able to last awhile stock. And get a good tuner. You already are Term tuned, so i imagine you will go back to him after you slap on a big turbo. You should be fine.

 

It's all about the tune as far as the engines go. On a good tune with the pillow of forgiving e47 these blocks are definitely reliable at 400-450 not too many push outside that box without getting into motor mods so it's hard to say what the outer limits are.
But on pump gas no e I wouldn't want much more then 400. If you go bigger turbo to get your goals vs maxing out a mid sized turbo that can also be more forgiving on the engine internals

 

clutch, bigger zfr, save for tranny, meth will get u there. probably think about building motor too

 

route to 450 whp?

 

The easiest route is clutch, some sort of big turbo kit, all your bolt ons, intake cam with bigger fuel lobe and Opel injectors, one awesome tune and if I were you I would do valve springs.

The reliability is how you drive and you tuning. I made 450whp for 40k and the car was wrecked by a semi or it would still be going strong I bet. I did that before we had boost table access and fueling access too. It was very hard to make it happen at that point in time. So it's even easier now and with better parts to aid you

 

honestly though i wouldnt really worry too much about internal because our weak point is the tranny go with the 4.05 or the 4.45 gears and a good clutch and then valve springs, retainers, and the 7163 and youll be good. now if you go e85 go 6758 and opels