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Shifter raises when gas applied

Forum: C4 Engines, Driveline and Handling

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Shifter raises when gas applied

Posted: 5/29/15 6:45amMessage 1 of 5
r
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Merritt Island, FL - USA
Joined: 4/27/2008
Posts: 35
Vette(s): 1981
Car has 170k and origninal trans mount.  I autoX it and just recently after a 12 run session driving it as my daily driver I noticed that when I gun it, the shifter handle rasise approx 1/2 to an inch.  anyone experience this before, thinking Trans mount.
 
p.s. How hard is it to replace Trans mount in a 96 with a ZF40 trans?  Going under her dress this weekend....
 
Thanks!
Doug
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Re: Shifter raises when gas applied

Posted: 5/29/15 12:02pmMessage 2 of 5
B
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Joined: 3/20/2009
Posts: 690
Vette(s): Black 1979 L-82 Black 1996 LT1 Black 1999 Coupe
trans and motor mounts.....cheap replacement.
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Re: Shifter raises when gas applied

Posted: 5/29/15 7:56pmMessage 3 of 5
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Duncanville, TX - USA
Joined: 11/8/2003
Posts: 22714
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
No trans mounts per se on the C4 cars. The rear of the trans is attached to the "C" beam that runs back to the differential. If the shifter is moving that much, you definitely need to get under there and have  look. Assuming there are no strange noises, engine mounts might be all you need. I have seen the two large bolts that hold the C beam to the trans loosen, and even fall completely out. For safety's sake, it needs to be checked before hammering it on a course.

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Re: Shifter raises when gas applied

Posted: 6/3/15 1:17pmMessage 4 of 5
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Amen to that AA. I'd be very afraid. If that ladder drops and digs into the pavement, serious damage will follow because the car could be tossed anywhere. Friend of mine broke his neck  in a similar.
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Re: Shifter raises when gas applied

Posted: 6/7/15 5:24pmMessage 5 of 5
r
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Merritt Island, FL - USA
Joined: 4/27/2008
Posts: 35
Vette(s): 1981
Spot on! Both bolts were loose, tighten them, symptoms gone. Thanks for the postings. You guys are great! Doug
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