I know this isnt the place to post for this.. Just wanted to know if anyone has done an "updated" 4T65EHD swap..?? and can it be setup for 4.10??

I know alot of the Fiero guys use this setup for there swaps..

 

what did this trans come in originally?

 

I found 05 Pontiac Grand Prix GXP w/ paddle-style TAPshift, 32k mile/ rearend totalled, for $1100 online in MI.. this car had the tranny upgraded to 4T65E-HD..

Im more looking to get the tranny, once i seen the "paddle-style TAPshift" option what a sweet deal..

ive read many post on here and other forums as well.. just wanted to see if anyone has done this already and to get feed back..

 

ive noticed most american paddle/tap shift transmissions are extremely slow compared to euro cars. I mean, A mercedes shifts in about an 1/8 of a second when your using the flappy paddles, but by the same token, american cars you need to telegraph early when you want to shift because if you dont itll hit the limiter OR shift on it's own at the preset anyways....so that's my take on why it's not really been done nor necessary, plus the trans requires standalone management and it's heavier.

 

i see, i just though having it would be nice to have.. from the ecotec build book, they reference it as the tranny to use for drag applications..

plus I also found out that ZZP also works on this tranny for there 3800 setups.. sweet, one more reason to go to ZZP.

 

Any pics of your car with the cage?

Also, you wont find much info on an auto swap because only one person has tried to do one and it never got 100% finished before they went a different direction with the car.

 

I've chatted with matt@zzp, about it and he'll get back to me on it. It's has been done, mostly for LSJ's NHRA Drag cars, but one no thought about putting a 4T65HD on a LNF. Until me. from what he stated it cost over $5k to get it done.. we'll see.. problem is sourcing gm performance parts..

As for the roll cage I haven't installed it yet.. I have the bolt-on kit but most likely I will go with the welded pro setup.. to meet nhra rules (over 6pts)..

 

better be a built 4t65 those stock ones are garbage. stock LS4's blow them up every 30k miles

 

I know it has been done in other Cobalts, I have looked into this very heavily myself. However, only one LNF Cobalt that I know of has tried an auto swap and it never got finished. I hope you do this with ZZP and I hope ZZP sells a swap "kit'' for it when your done.

 

Swapping to the 4t45 trans would be pretty easy compared to the 4t65 swap. The problem is that any turbo swapped LNF running 25+ psi will need the trans to hold more than what a 4t45 can be built to handle.

 

lol guess that answers my question on me going sc or tc... IPT never got back to me on a 4t45 rebuild and I guess the rebuilds you guys do wouldnt hold to the power level I want.

Oh well sc kit it is


Sorry for the thread hijacking.



Though on track with this thread isnt the bellhosing and bolt pattern different on the 65 due to it being used on 90 degree v8 setups?

 

You can still have a turbo and not crank the hell out of it, and its the way to go. You wont ever make the power you can with a turbo on a 4 cylinder with a blower where you can make big power with a turbo.

 

yeah but price for the kit + risk to the automatic = sc kit

 

That is what I was finding as well. The 4T45 would be pretty easy in my opinion but the 4T65 would be the only way to go for a turbo swapped car. Would you guys consider doing a 4T65 swap? Any rough idea on the cost? You can PM me if you would rather.

 

roush racing makes the bell housing adapter and mounts needed to put in a 4t65 trans. they are weak in stock form though. the build book shows all of this

 

I guess this solved my question.. Matt let me know when you have put together a build sheet..

 

Check with the boys down at ATI racing. They might be able to help you out. They build trannys for all sorts of applications including 4000 HP Power Glides

 

And then what happened?
What about the stage 3 HD?
ZZPerformance - 4T65E (HD) Transmission #ZZ-4T65EHDTa

Stage 3 will support 500whp. It comes with the 300m input shaft instead, and adds: chromoly pump shaft, ZZP output shaft, ZZP 1" gear set, and Meziere 245mm billet flex plate.

 

Bump

 

Anyone?

 

I would bet most these guys got rid of their cars a long time ago, as the thread is 5 years old. I would think if it was cost effective to do, and doable, their would be more guys running around with that setup due to f35's getting harder to find. Just my 2 cents

 

When I looked at going auto it was going to be in the 8-12K+ range to do.

 

Yeah, after a lot of searching I see that ZZP quoted over 14K to put a 4T65E HD in.

Been trying to look into a good 4T45E that would be built good, but don't see any.
See ZZP used to make one, but seems no one really bought them, and seemed to be a lot of speculation as to how much torque they could even hold.

Sucks, I'm really in a hard place here.
I had an engine go on me, and asked a shop to check it out and see what all was wrong and if it'd be worth putting a new engine in. They told me oh yeah, great car, put a new engine in for sure. So I ordered one, then they took the old one out and found that the engine internals shot threw the turbo and back around threw the intake...
So got a new turbo.
Then they found out my clutch was gone, so got a new clutch, fly wheel, throw out bearing, bolts, pressure plate.
Then come to find out that my gears, bearing, etc were all chewed to hell.
Seems the last place that put in my previous clutch put in the wrong trans fluid.
SO then had to get new gears, bearings, etc.
So about $15000 dollars there.
Now here I am 6 months later and seems my throw out bearing is gone, and no way of knowing really how much damage that has cost... So would have to get all new clutch, fly wheel, throw out bearing, bolts, pressure plate just to be safe, and pay a crap load for the work on top of that again, and then who knows how long that will even last again.
Really if I had of known I would have needed more then an engine at that time I would have parted out and got an AWD.
Now I'm stuck with a FWD, that needs a paint job, new finders, trans parts and work, wheel bearing, yawl sensor, window motor, tires etc. Plus it's standard and I live in a city with a lot step hills everywhere and rush hour traffic, so a racing clutch/ manual kind of sucks anyway here. In Canada's east coast so lots of snow and pot holes here, so would rather an auto, and lost 4 tires this winter to massive pot holes all over.
So.... yeah. Great. This after just putting $15000 into it only 6 months ago....
So now I have no idea what to do. Don't really have money now for a new car. Was hoping to finally look at getting a house so I'm not paying rent...
So was looking at trying to find a WELL built 4T45E. Then I wouldn't have to deal with manual parts and labor costs over and over and over. Plus wouldn't have to deal with the manual on all these hills and rush hour traffic. No such luck I guess...

Was thinking of finding a reasonably new (newer than 2008) car with AWD that I could swap my LDK and ZFR into, but no such luck. Can't find a match... Was hoping to find a match and then find one with a blown motor and just swap mine in.
Seems I'm out of luck either which way here. If I see the car I'll only get a couple thousand for it in it's current state, so... I don't know.
Get new clutch, etc; pay for the labor, and hope for the best (which hasn't gone so well thus far) or eat the cost of putting $15000 into this car 6 months ago, and not be able to get a house, and be stuck with a new car payment for a new car...

Man wish I knew it'd cost that much 6 months ago. Had they actually looked at the car like I asked them to.... instead find out part by part that things need to be replaced... fun.

What do you all think?

 

Didnt read the whole thread but the 4t65 is glass. The stock GXP shreds them up, for 10,000 you can make it support 800 but even when I did that I still shredded parts around 600 wheel in my GTP (Had a Turbo Grand Prix GTP). Its really not a good transmission.

The input shaft will snap at 330 wheel
The chain will shatter at 400 wheel

The cobalt is lighter so may get a bit more out of it but still, not a strong transmission by any stretch of the imagination.

 

4t45 would only be good to around 400ftlbs. After that you have to go 4t65. Your much better off going rwd vs awd. awd isn't that great really. Solstice, sky, rwd ats.