Hey guys i got a price from gm racing on a 4t65e and it is over $6000!!! Does anybody here know if you can run the transmission as an od unit and not a 3-speed? Im looking more for a street car not a race car. if anybody has swapped this transmission yet let me know. thanks
I used to have some but cant help u now heh.
Quote:
Does anybody here know if you can run the transmission as an od unit and not a 3-speed?
Unless I'm unaware of some wacky new GM Racing creation, the 4T65E
is a 4 speed overdrive, not a 3 speed.
1989 Z24 Convertible - Dust Covered
2006 tC - Dust Covered, but driven more
^^ when its built to the full drag-car specifications, the overdrive is disabled.
To my knowledge, no one has put a 4T65 in a 3rd gen J. I know of one person who was attempting it into a 1st gen, but I have no idea what ever came of it. GM did make a mount kit to fit it into the Cobalts for the Phase 5 cars, but I doubt it would work in a 3rd gen as at least the trans mounting is completely different. Not saying it can't be done, just saying you probably won't find much help here.
As to keeping overdrive, just do a more mild build. Head over to clupgp.com to check out what the grand prix guys are doing to keep it holding up under power. From what I know, there are 9 and 10 second cars without much more done than upgrading the chain and final drive, and putting in the hardened input shaft. ZZperformance.com will modify your 4t65 to handle a butt-load of power as well. My advice though would be to make sure that the trans will fit in your car before going any farther.
Here's pretty much a step-by-step writeup straight from GM on how to build the trans too....
http://tunersource.gmblogs.com/Racer-Tech/ECOtec-L61-Build-Book/gmtunerhydra-matic_4T65_race_transmission.pdf
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'Nuff said
Quote:
^^ when its built to the full drag-car specifications, the overdrive is disabled
And I have been educated. Thanks!
1989 Z24 Convertible - Dust Covered
2006 tC - Dust Covered, but driven more
AFAIK the 4T65E is physically too big for the 3rd Gen J chassis. But it is a hearty piece of work that I would give a nut to have.
I used to race cars, now I race myself.
5K PB: 24:50
10K PB: 54:26
actually the 1st versions of the GM drag sunfire , had a 4t65e in them , and back then the stock frame rails were still in the car
granted i believe they were modified or the trans was , or both
Edited 1 time(s). Last edited Wednesday, May 09, 2007 12:05 AM
Justin Soza wrote: Im looking more for a street car not a race car.
I'm not sure what trans you have stock but i'll bet it was designed for those exact conditions.
- 93 mph in the 1/8 mile
Member of J-Body Of Michigan.
Skilz10179 wrote:Justin Soza wrote: Im looking more for a street car not a race car.
I'm not sure what trans you have stock but i'll bet it was designed for those exact conditions.
alright, mr 350hp on a stock 4t40e! lol
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Team Vision Racing (aka hypsy) wrote:AFAIK the 4T65E is physically too big for the 3rd Gen J chassis. But it is a hearty piece of work that I would give a nut to have.
Thats not true, Sebastin (the one who originally installed a 3800 into a 3rd gen) used the 4T65E. We have measured everything here as we are doing a frame and mounts for an auto right now and it does fit. Also the GTP guys have had all kinds of issues with the stock tranny, with the input and output shafts being the major week links. From what I have seen 350whp is the limit of those tranny's before a full rebuild with new stronger parts are needed.
Quoth the Raven 'Nevermore
raven@accesswave.ca
Raven Autosports
55 McQuade Lake Cres,
Halifax, Nova Scotia, Canada
(902) 850-3330
10.82@132
It'll fit in there with a Ecotec motor no problem?
I used to race cars, now I race myself.
5K PB: 24:50
10K PB: 54:26
Team Vision Racing (aka hypsy) wrote:It'll fit in there with a Ecotec motor no problem?
I can't see why it wouldn't, you may have to get some axles done up but that shouldn't be a problem if you are at this point. The side of my block sits in the same place that the side of an eco block would sit.
Quoth the Raven 'Nevermore
raven@accesswave.ca
Raven Autosports
55 McQuade Lake Cres,
Halifax, Nova Scotia, Canada
(902) 850-3330
10.82@132
Interesting.
I used to race cars, now I race myself.
5K PB: 24:50
10K PB: 54:26
