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

700r4 slips at takeoff under WOT

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Old Nov 25, 2011 | 09:42 PM
  #1  
Toofpik's Avatar
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From: Miami
Car: 91 RS
Engine: carbed 305
Transmission: T5
Axle/Gears: 3.42 w/posi & disc brake
700r4 slips at takeoff under WOT

Hey guys,

Im having trouble with the tranny and im clueless as to what it might be...
first off, it shifts hard and high into 2 and 3 under light throttle even after i adjusted my tv... I was thinking maybe it had to do with the new 3.42 gears so i thought nothing of it... so tonight at the track when the light turned green i floored it and it stuttered and then just rev'ed to 4k like it was in neutral... I figuered that my carb wasnt perfectly tuned and I went for a second run but this time i took it abit easier than before... It did the same s*** again, run after run... I just doesnt do anything if u go wot from 0 mph

Ive searched on google and I read somewhere that it could be a pressure leak... I want to know what the tranny experts on here think...
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Old Nov 26, 2011 | 08:00 AM
  #2  
Toofpik's Avatar
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Joined: Aug 2011
Posts: 26
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From: Miami
Car: 91 RS
Engine: carbed 305
Transmission: T5
Axle/Gears: 3.42 w/posi & disc brake
Re: 700r4 slips at takeoff under WOT

Anyone???
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Old Nov 26, 2011 | 08:51 AM
  #3  
TTOP350's Avatar
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From: Il
Car: 1989-92 FORMULA350 305 92 Hawkclone
Engine: 4++,350 & 305 CIs
Transmission: 700R4 4800 vig 18th700R4 t56 ZF6 T5
Axle/Gears: 3.70 9"ford alum chunk,dana44,9bolt
Re: 700r4 slips at takeoff under WOT

Welcome to the trans needs a rebuild club!!!
(Most likely)
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Old Nov 27, 2011 | 01:45 AM
  #4  
oamhmad's Avatar
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From: Elmwood Park, NJ
Car: 84 Trans AM
Engine: Goodwrench 350 Crate motor
Transmission: T56
Axle/Gears: 3.73
Re: 700r4 slips at takeoff under WOT

I concur. T-56 time!
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Old Nov 27, 2011 | 01:54 PM
  #5  
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From: belle fourche,s.d.
Car: '82 z28
Engine: L83 5.7
Transmission: 700r4-1985
Axle/Gears: 3.42 posi
Re: 700r4 slips at takeoff under WOT

When mine did that the cause was the (aftermarket
converted)torque converter blew it's thrust bearing and
plugged passages in the tranny's oil circuits with little
filings-had to drop the tranny,take it apart,muck out all
the particles,check the pump,and put the tranny back
together with a good torque converter and reinstall-has
been fine since
There are other possible causes for the slippage too...
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