Transmissions and Drivetrain Need help with your trans? Problems with your axle?

How much can a rebuilt 700R4 handle?

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Old 01-13-2005, 08:38 AM
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Car: 1988 Camaro IROC-Z
Engine: 350 TPI (L98)
Transmission: T56
Axle/Gears: 9-bolt 3.45
How much can a rebuilt 700R4 handle?

I'm not talking about change the input shaft to a hardend one, I mean just a regular shelf rebuild kit. I am planning on making about 400-420hp and 450-460 ft/lbs of torque. The tranny I have now is slipping and the stall is really weak.

Will a rebuilt tranny hold on to that much power?
Old 01-13-2005, 08:58 AM
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ede
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407 is about the upper limit on HP and 466 for torque
Old 01-13-2005, 09:06 AM
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Car: 1988 Camaro IROC-Z
Engine: 350 TPI (L98)
Transmission: T56
Axle/Gears: 9-bolt 3.45
Hmm. That sucks.
Old 01-14-2005, 12:51 AM
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Car: '85 Camaro
Engine: LS1
Transmission: T56
Axle/Gears: 3.73
i've had a guy rebuild mine for $1000 which was for parts and R&R. He put new bands, corvette servo, etc.. and i have a 3500 stall. my 383 puts out about 500HP/TQ and havent had any problems. i've got the B&M megashifter and it snaps in every gear.
Old 01-14-2005, 02:46 AM
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Go to http://www.700r4l60e.com/store/custo...&cat=19&page=1 This should give you what you need.
Old 01-14-2005, 08:22 AM
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Car: 1988 Camaro IROC-Z
Engine: 350 TPI (L98)
Transmission: T56
Axle/Gears: 9-bolt 3.45
Thanks man.

One more question. Are you able to change the ratios in the 700R4?
Old 01-14-2005, 09:04 PM
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we are the only people in the country as of now building a 2.66 ratio first gear 700r4.and we sucessfully use our stage 1 700r4 at 450 horsepower,450lbsft in normally aspirated applications.
Old 01-15-2005, 07:36 AM
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how much have others put through it?
Old 01-15-2005, 10:07 PM
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Car: 1983 G20 Chevy
Engine: 305 TPI
Transmission: 4L60
Axle/Gears: 14 bolt with 3.07 gears
I am running about 335 flywheel horsepower and about 380 ft/lbs of torque through a near stock rebuild (in my garage) of a 1992 van 4L60(same thing as a 700r4 just called a 4L60(non E) in 1992. It is in a Chevy Van that I have beat on for 15,000 miles with no problems yet. The only thing special in it is the Vette 2-4 Servo, Vette TV boost valve, Transgo Corrective shift kit, and modified the governor for 5,500 rpm upshifts with a B&M kit. Oh and I have a 2,000 rpm lockup converter meant for a 4.3 S10 (Actually stalls @ 2,500 rpm in the van). All I have to do is mash the pedal and let the transmission do the work.


Has survived my heavy foot, track and dyno abuse, towing my 5,500# boat, numerous cars, climbed Ratan pass with my foot on the floor pulling something a couple of times. It still chirps the tires (P255-70-R15s with 3.08 posi) on every WOT 1-2 shift. Hasn't even warmed the fluid up enough to turn it gray.

Last edited by Fast355; 01-15-2005 at 10:11 PM.
Old 01-15-2005, 11:03 PM
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THEY SAY TTHE INPUT HOUSING is the weak link however we install new ones in our stage 2s and never break them
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