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Topic: 74 auto trans slip

in Forum: C3 Cooling and Heating Systems


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74 auto trans slip (1/3)
 11/28/15 1:07am
kbrin
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coral springs, FL - USA

Vette(s):
81 beauty all original (not anymore!!) Its more fun now!


Joined: 3/25/2014
Posts: 71

Hi all, my buddy just bought a 74 3spd auto vette. its now chattering on take off and when it hits 3rd just winds up with no no engagement. what do you thing, torque convert, bands , or other?? where should he start to look/diagnose?

Thanks..... and happy turkey day!




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Re: 74 auto trans slip (2/3)
 11/28/15 1:15pm
Adams' AppleLifetime Member
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Duncanville, TX - USA

Vette(s):
#1-1974 L-48 4spd Cp Med Red Metallic/Black deluxe int w/AC/tilt/tele./p/w-p/b/ Am-Fm/map light National/Regional/Chapter NCRS "Top Flight" #2-1985 Bright Red/Carmine Cp.L-98/auto Member: NCRS, NCRS Texas, Corvette Legends of Texas


Joined: 11/8/2003
Posts: 20126

Does it also slip in reverse?
From the description, it sounds like the trans is a goner. If the fluid is nasty, and smells burnt, it's done for. IF the fluid is still red colored, and has no burnt smell, it's possible the pressure regulator valve in the pump is stuck, but there's no way to correct that without removing the trans, and opening it up. Either way...the trans is goin to need to come out and be repaired. No magical elixirs or snake oil will help.....Ouch


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Re: 74 auto trans slip (3/3)
 11/28/15 2:18pm
cingraham
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Brookline, NH - USA

Vette(s):
1976 corvette L82 red interior with white seats and door panels with ceramic headers and flow master exhaust and a Crane Cam


Joined: 5/2/2014
Posts: 46

If you already haven't done so check the fluid level and make sure it's full, low fluid level will cause this exact problem

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