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T-10 on a 81

Forum: C3 Engines, Driveline and Handling

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T-10 on a 81

Posted: 12/3/06 3:43pmMessage 1 of 4
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Rocklin, CA - USA
Joined: 4/2/2005
Posts: 484
Vette(s): 1970 T-Top350/350hp numbers matching 4 speed. It's a mess and 1970 Convertible 4 speed.
Hey guys I am having problem with my 4-speed it is hard to get in reverse. When I try it sounds like I am griding the gears. Whats wrong with it and how much is this going to cost me?Cry
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T-10 on a 81

Posted: 12/3/06 4:26pmMessage 2 of 4
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Duncanville, TX - USA
Joined: 11/8/2003
Posts: 22720
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
There is no synchonization in reverse, so you will normally get some "grind", unless you put it in a forward gear first. You will always get a grind if you are moving when you go to reverse. Always come to a complete stop before selecting reverse on most standards, late models excepting.

Now...if the clutch is not fully dis-engaging, it will cause a grind, reguardless. You should check the clutch adjustment first, to see if that will solve the problem. If not, then you may need a new clutch, and/or pilot bushing. Also check all of the linkage to make sure none of it is worn out. If you can turn the engine off, and it goes into reverse easily, then you have a clutch related problem.
There is nothing in the trans that will cause a grind in reverse. My money is on a clutch adjustment/pilot bushing wear issue.

Joel Adams
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T-10 on a 81

Posted: 12/3/06 5:27pmMessage 3 of 4
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Rocklin, CA - USA
Joined: 4/2/2005
Posts: 484
Vette(s): 1970 T-Top350/350hp numbers matching 4 speed. It's a mess and 1970 Convertible 4 speed.
Hey I just check and it will go in reverse with the engine off. I did take the car in about 3 weeks ago because the clutch pedal went out a broken bolt. SO could it be just a adjustment?
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T-10 on a 81

Posted: 12/3/06 7:53pmMessage 4 of 4
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Duncanville, TX - USA
Joined: 11/8/2003
Posts: 22720
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
That would be the best place to start, absolutely.

Joel Adams
C3VR Lifetime Member #56    

My Link


(click for Texas-sized view!)
             NCRS

"Money can't buy happiness -- but somehow it's more comforting to cry in a CORVETTE than in a Kia"

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