Tranny Swap
 

So how hard would it be to swap a stock tranny in 99 alero with a 4t65e???

BlackJack swapped the 4T65-HD, he is the one to speak with.

Yes Blackjack can give you more detail.

You would def need different axles because the 4t65's tranny's axles are thicker than the 4t45's. The files will need to be uploaded into your PCM. Tranny mounts would need to be made, and something with the hubs, becuase the 4t45's are smaller.

Haven't gotten any questions from this one, so I guess it wasn't that important to him :huh:

sine the thread is open i won't start another, BJ can you tell me what would be included in a tranny swap, and what would be the eaisest for my 99 alero? I wanna get all the stuff and then do it when i get back from Iraq :)

oh, and I don't know nothin' about tranny's other than the REAL basic stuff, like how all cars that run have them :P

Iraq eh? Looks like we're trading locations. I'm outbound in a few months.

Here's the list of stuff you'll need:

• PCM reprogrammed (special order) with the 4t65 transmission data. If you don't, you won't have the correct information it needs like gear ratios, MPH information, etc, and your shifting/MPH reading will be all out of whack.
• 4t65 transmission (duh) WITH the driver's side primary mount. You'll need the base mounting plate that sits on the frame of the donor car (van) also. I used the one from a 2000+ Monte Carlo w/3800
• Dog-bone mounts from radiator head panel to engine (this is your torque bracing). I use the ones from the minivan (chevy venture, etc.) because the engine bay is smaller and the right length. The dogbone assemblies from GM cars are not useable because those have longer engine bays than the N-body.
• Axles custom made with 4t65 inners and 4t45 outers, or use shortened 4t65 outers if you want to change to gran-prix hubs. The outer splines will not match up.
• flex plate from whatever engine your torque converter/trans came from. 3800 and 3400 center bolt patterns are the same on the flex plate, however the outer bolt pattern on the torque converters are not.
• custom made wiring harness to change the signals to the transmission.
• weld the lower base-plate mount support to your lower frame on the driver's side.

Bingo, you're in business.

well.. geeze. that just makes it sound like a weekend project. :glare:

:lol:

is the 4t65 auto or manny? Because I know there have been a couple of places talking about doing a 5 speed conversion for the N-bodys

Automatic, lol.

http://en.wikipedia.org/wiki/GM_4T60-E_transmission

I can't wait till MMS gets the 5 speed conversion... I hate having an automatic... I have had 3 trannys because I try to sport throw it when I race and it tears it up... I think..

offtopic but some kid in the parking lot at school today was trying to burn out and he floored it in reverse then dropped it in drive and floored it hahahaha! it made the worst grinding noise I think I have ever heard a car make.

That's a RWD tranny, ya goof :lol:

actually, the 4t60 is a FWD, used in mid-late 90's monte carlo's and luminas, etc.

The article lists a more comprehensive inclusion of what year/models it came in....


4T60-E

• 1991-1996 Oldsmobile Cutlass Ciera/Oldsmobile Ciera V6 2.2/3100/3300 L
• 1994–1996 Chevrolet Beretta/Corsica V6 3.1 L
• 1992–1996 Chevrolet Lumina APV V6 3.4 L/3.8 L
• 1996 Buick Park Avenue V6 3.8 L
• 1993–1996 Chevrolet Lumina/Monte Carlo V6 3.1 L/3.4 L
• 1997–1999 Chevrolet Lumina/Monte Carlo V6 3.1 L
• 1997– Chevrolet Malibu V6 3.1 L Uses a 4T40-E
• 1997–1998 Chevrolet Venture V6 3.4 L
• 1992-1997 Pontiac Bonneville 3800 V6
• 1995-1998 Pontiac Grand Am 2.4 L
• 199x-1999 Buick Century
• 1991-1992 Oldsmobile Toronado/Trofeo 3800 V6

The T in GM transmissions stands for transverse mounted, meaning FWD. If it were 4L60E, the L meaning longitudinally mounted, it would be a RWD transmission.

While we're playing the semantics game..... yes the T stands for transverse, but trust me, Fiero's aren't FWD.

so, what are we now calling the 4t65 variant for the AWD's such as in the Pontiac Aztek? (real question).

We're accually doing the 6 speed conversion!

We still need a donor car for this to happen!

If your interested give me a pm and i'll give you the number!

Mike S

So are you guys dropping the 4t65 conversion off the burner, or just going with what will seem to be more popular for now?

Lol Do I have to pay for it.... and where are you located?

Yes you will have to pay for the parts, but not the labor or the tuning.

No we are still doing the 4T65eHD swaps too!

Just giving a little variety :)

We are located in Dayton,Oh

Do you actually have a full Garage or is it a home run website? And whats the estamate for Cost of the parts... + is there a warranty? Like if you messed up my car would you fix it out of your pockets?