manual trans question
Thread Starter
Racer
Joined: Aug 2008
Posts: 367
Likes: 0
From: Sacramento ca
manual trans question
I have a 6 speed that used to give me a little trouble going into reverse every once in a while (mostly when it was cold), I put royal purple in it and it has no issue now.
Does that mean that the trans is on borrowed time?
Also I have 2.73 and it is hard to get into 6th unless I am going fast enough (80+) to where 6th gear will be doing 1300 + RPM's?
Now reverse works fine and all other shifts are great, no issues.
Any thoughts / experiances would be great.
Does that mean that the trans is on borrowed time?
Also I have 2.73 and it is hard to get into 6th unless I am going fast enough (80+) to where 6th gear will be doing 1300 + RPM's?
Now reverse works fine and all other shifts are great, no issues.
Any thoughts / experiances would be great.
Last edited by Toby Van Horn; Feb 14, 2010 at 11:37 PM.
Le Mans Master
Joined: May 2005
Posts: 6,366
Likes: 249
From: Fort Lauderdale, Florida
Many people have reported having good luck switching to Royal Purple Synchromax in their 6 speeds, myself included. My trans was nowhere as bad as yours sound, but switching to RP did make a positive affect in shift smoothness. If it's shifting smoothly now and you have no bad noises coming from the trans, I wouldn't worry about it. It might have desperately needed an oil change in the tranny. I'd pay attention to it for awhile and if nothing negative pops up, I'd say you're good to go.
Melting Slicks
Joined: Feb 2003
Posts: 2,966
Likes: 22
From: Frederick Maryland
St. Jude Donor '08-'09-'10-'11
I have a 6 speed that used to give me a little trouble going into reverse every once in a while (mostly when it was cold), I put royal purple in it and it has no issue now.
Does that mean that the trans is on borrowed time?
Also I have 2.73 and it is hard to get into 6th unless I am going fast enough (80+) to where 6th gear will be doing 1300 + RPM's?
Now reverse works fine and all other shifts are great, no issues.
Any thoughts / experiances would be great.
Does that mean that the trans is on borrowed time?
Also I have 2.73 and it is hard to get into 6th unless I am going fast enough (80+) to where 6th gear will be doing 1300 + RPM's?
Now reverse works fine and all other shifts are great, no issues.
Any thoughts / experiances would be great.
Tech Contributor
Joined: Oct 1999
Posts: 41,058
Likes: 9,819
From: Charlotte, NC (formerly Endicott, NY)
My 97 had gear clash going into reverse from the time it was new and my 03Z had it from the time I bought it with 18K miles on it. I went 6 years on each car with plenty of track miles on each and the trannys held up fine. They both had the clash when sold and as far as I know the subsequent owners had no problems with the trannys either. I just got into the habit of letting the clutch out a little bit as I pushed the shifter into reverse and hit some resistance. That turned the gears just enough to allow the tranny to shift easily into reverse.
Bill
Bill
Melting Slicks
Joined: Feb 2003
Posts: 2,966
Likes: 22
From: Frederick Maryland
St. Jude Donor '08-'09-'10-'11
One thing I forgot to mention was that Corvette T56 reverse has single bronze reverse blocking ring (compare to 1-2 have triple synchro ring; 3-6 have double synchro ring). All the transmissions I took apart, every single one of them had the engagement teeth on the reverse gear somewhat chewed up. It helps if you shift it into another gears (like 5th) and then to reverse. This slows down the counter extension shaft where the reverse driven gear is so less grind going into reverse. 
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