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79 SLAMS INTO REVERSE (AUTOMATIC)

JohnnyJ

Active member
Joined
Sep 24, 2002
Messages
40
Location
SC
I have a 79 Corvette with a 350 tranny that has recently started to slam into reverse gear. Is there an easy fix for this, or am I looking at a new or rebuilt tranny in the future?? Any suggestions are appreciated.

Cheers
 

Evolution1980

Well-known member
Administrator
Joined
Feb 25, 2002
Messages
4,302
Location
Cleveland, Ohio
Corvette
ZZ4, 700R4, Steeroids rack & pinion, VB&P Brakes
Have you checked line pressures?
 

bradfordsvettes

Well-known member
Joined
Mar 28, 2001
Messages
549
Location
Boston, MA area
Corvette
jewel blue 61.cranberry 69 t-top.black rose 92
make sure the vacumline to the modulator is not cracked or broken that will cause a problem Steve
 

AKRAY4PLAY

Well-known member
Joined
Oct 14, 2001
Messages
584
Location
Wasilla, Alaska, U.S.A.
Corvette
'77 L-82, black on black. Full mod 406 small block
when's the last time you changed your tranny filter?? also is your idle rpm under 1000?? checking the vac lines to the modulator is always a good idea as stated.
 

emf1367

Well-known member
Joined
Jul 31, 2004
Messages
84
Location
Seattle, WA
Corvette
2003 50th Anniversary Coupe
Is it possible the tranny is fine but the u-joint(s) or rear end is shot? I had a similar problem a few years ago and it turned out to be a bad u-joint on the half shaft (actually two bad u joints). They never made a noise or acted poorly when in any of the forward gears but every time I put it in reverse there was a loud bang and a delay in movement.

Good luck
 

KANE

Moderator
Joined
Mar 2, 2002
Messages
3,244
Location
KY
Corvette
Dark Blue 1982 Trans Am(s): Polo Green 1995 MN6
A loose or broken tranny mount will cause the tranny to "buck". I'd check that first.
 

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