Transmission Problem
Thread Starter
Racer
Joined: Jul 2004
Posts: 408
Likes: 0
From: Buffalo NY
Transmission Problem
When I am engine breaking in 2nd gear my transmission kicks out of gear into neutral, or at least out of gear enough to grind the gears. This seems only to happen in 2nd. Like when I am driving down a slight hill and I want to maintain a speed, I take my foot off the gas and try to slow down, after a little bit of this it pops out of gear. It also happened when I was in 2nd slowing down to turn of a main road into my neighborhood, I took my foot off the gas to slow down and once again it popped out of gear.
What is causing this? Is it a linkage problem? Worn gears? Or some kind of detent/interlock issue?
What is causing this? Is it a linkage problem? Worn gears? Or some kind of detent/interlock issue?
Race Director
Joined: Jun 2000
Posts: 10,040
Likes: 672
From: FL
Originally Posted by BerniesVette
It could be something else, but it sounds like your second gear syncros are worn, allowing it to pop out of gear when it is under pressure.
Bernie
Bernie
Had the same problem. Solved it by going to a Tremec 5 speed.
Burning Brakes
Joined: Jun 2005
Posts: 764
Likes: 2
From: THE OLDER I GET THE BETTER I WAS! NORTHERN ONTARIO
Originally Posted by Scudd
Congrats the second gear syncros are worn. I think you have two options 1. replace the tranny with a new 5 or 6sp. or get it rebuilt.
Advanced
Joined: May 2005
Posts: 54
Likes: 1
same problem that I had with an MG Midget when I was a kid. I had to doulble clutch it into gear. That avoided the grind and no one else in the car had a clue the tranny had problems. 
drove it that way for years. never did bother to fix it. 
drove it that way for years. never did bother to fix it.
Drifting
Joined: Nov 2001
Posts: 1,469
Likes: 6
From: 68 427 4.11s Roadster
Originally Posted by Scudd
Congrats the second gear syncros are worn. I think you have two options 1. replace the tranny with a new 5 or 6sp. or get it rebuilt.
Team Owner
Joined: Jul 1999
Posts: 65,492
Likes: 230
From: Orange Park Florida
UHHH....on an olde shark, the stock shifter is mounted on the rear cross support, with the rods going forward to the tranny, at least in the munices of '72, and so, make damn sure the shift rods are not outta adjustment, in that with reverse torque the thing is not trying to pop outta gear on account of never actually BEING in total engagement in the first place....
may check engine mounts too....
GENE
may check engine mounts too....
GENE
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!
Joe Kucinski
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter
Joe Kucinski
8 Coolest Corvette Pace Cars (and Replicas) of All Time
Verdad Gallardo
Top 10 Corvette Engines RANKED by Peak Torque (70+ Years of Muscle!)
Joe Kucinski
Corvette ZR1X Will Be Pacing the Indy 500, And Could Probably Race, Too!
Verdad Gallardo
Top 10 Corvettes Coming to Mecum Indy 2026!
Brett Foote
Top 10 C9 Corvette MUST-HAVES to Fix These C8 Generation Flaws!
Michael S. Palmer
10 Revolutionary 'Corvette Firsts' Most People Don't Know
Joe Kucinski
5 Reasons to Upgrade to an LS6-Powered Corvette; 5 Reasons to Stay LT2
Michael S. Palmer
Racer
Joined: Apr 2005
Posts: 365
Likes: 1
From: UK without vette :(
I have a synchro problem going into 3rd, from second and on the downshift from 4th. Picked up a rebuild kit from Medatronics Corp, these guys were the cheapest, I think it was about $160, much better than the $204 and up that are in most catalogs. Oh, by the way, have not yet done mine, waiting until the end of the summer. Good luck.