Hi, I was wandering how much power the 4t60e-and ehd can hold. Ill be pushing about 260hp and 345 lb/ft to start with. WIll it handle spirited driving with these numbers?

EH PAT...hp is not the problem it is tq that kills it ,,,but ur pretty dam close to the magic number for that trans

If you are going to run 4TxxE... You might want to look into the higher numbers... 65 85 and those. The higher that number the stronger the tranny is supoosed to be. Of course strength of all transmissions is relative..... All of them will break if abused.

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Screamin' Yellow Zonkers... If it's Screaming and Yellow, I aint eatin it.

When it comes to the limits of the 4T60E Im an expert. I have completely blown apart 5 of them in my cutlass. It only has minor tweeks to the 3.4l dohc but before I tweeked it I never had a tranny problem. After I played with the timing and a few other things I went through 5 in 2 years. 2 were $3000 tranny that were supposed to be able to tale on hell of a beating, first one lasted 3 days second lasted a week. I would say changer your tranny fluid every other oil change and take it really easy on the burnouts.

Would a 4T80 or 85 handle 355hp, 405tq? (If hardened?)

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Christian Thomas
87 Pontiac Fiero GT Maroon/Silver

quote Originally posted by wuzzy: When it comes to the limits of the 4T60E Im an expert. I have completely blown apart 5 of them in my cutlass. It only has minor tweeks to the 3.4l dohc but before I tweeked it I never had a tranny problem. After I played with the timing and a few other things I went through 5 in 2 years. 2 were $3000 tranny that were supposed to be able to tale on hell of a beating, first one lasted 3 days second lasted a week. I would say changer your tranny fluid every other oil change and take it really easy on the burnouts.

Wouldnt know where to get a shift kit for it would ya?

Steven

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88 Fiero coupe 2.5 5 speed, Custom IHI RHB6 turbo equipped, gutted and track abused
88 Coupe Project "F-88" has begun....Classified TOP SECRET **your gonna love this**
88 Fiero Coupe 2.5/auto Not sure what I am going to do to this one!
87 Fiero GT 14.9/ 89mph **4.9 PFI swap in progress**
87 Fiero Coupe 91k miles
86 Fiero SE
88 Mazda RX-7 'vert SBC v8 383/T-5
Always have engines, fiero parts and accessories for sale. Custom engine swaps and chassis modifications are available.

http://www.intense-racing.com./

and Thrasher build auto trans that will hold ALOT of power. They also can add a LSD and many other things you would like

I'm going to wait till the paddle shifted 4speeds come out to have mine built.

http://www.fierox.com

You can get a "shift kit" from Trans-go for it. kit # SK4T60EJR. cost me about $45.

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i have a 4t60e in mine, and Im making about 400 hp and 450 tq and it runs great. Ive got a hardened drive shell, LSD, extra clutches in 1st 2nd and 3rd gears, trans go shift kit, boost hooked to modulator, and thats about it. Made 1.579 60' at the track, 11.633 @ 115.927 mph, and has about 30k on it. Okbye.

Taken from intense web site:

"APPLICATIONS:
1998-current Grand Prix GT
1998-current Monte Carlo
1998-current other applications using the 4T65E (non -HD) transaxle
1997-current Grand Prix GTP
1997-current Regal GS
1997-current Bonneville SSEi
1997-current other applications using the 4T65E-HD transaxle

APPLICATION NOTES:

- Unfortunately this kit will NOT fit 4T60E transaxles."

Guess I will look at the transgo part. Thanks

Steven

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88 Fiero coupe 2.5 5 speed, Custom IHI RHB6 turbo equipped, gutted and track abused
88 Coupe Project "F-88" has begun....Classified TOP SECRET **your gonna love this**
88 Fiero Coupe 2.5/auto Not sure what I am going to do to this one!
87 Fiero GT 14.9/ 89mph **4.9 PFI swap in progress**
87 Fiero Coupe 91k miles
86 Fiero SE
88 Mazda RX-7 'vert SBC v8 383/T-5
Always have engines, fiero parts and accessories for sale. Custom engine swaps and chassis modifications are available.

Well don't that just suck

Buy a 65 next time!! :P

quote Originally posted by fieroX: i have a 4t60e in mine, and Im making about 400 hp and 450 tq and it runs great. Ive got a hardened drive shell, LSD, extra clutches in 1st 2nd and 3rd gears, trans go shift kit, boost hooked to modulator, and thats about it. Made 1.579 60' at the track, 11.633 @ 115.927 mph, and has about 30k on it. Okbye.

Do you have any more info on this? I would love LSD. IS there a site I can check out, or a place I can look into. I just spent some money on my V8, but ill have the money in a few. Thanks alot, and ill check out the sites listed. What cars did the 65 on up come in?

Try www.intense-racing.com. I have dealt with Scott Cook before and he is a sharp guy. You usually get a quick response to questions.
jp

click on Transaxle/Motor mounts and scroll to bottom....many goodies for this transmission. Scott is the person to contact.

[This message has been edited by L67Formula (edited 05-13-2003).]