Over/Underdrive system. Thoughts?
Thread Starter
Drifting
Joined: Aug 2007
Posts: 1,838
Likes: 13
From: Kingman AZ
Over/Underdrive system. Thoughts?
At the Cruise for a Cure I went by a vendors booth. Not from the forum. They sold a unit that looked to be an attachment to the transmission. I don't ask a lot of questions because cash is short right now. (Supplemental Corvette Budget bill of 2008 still hasn't passed the "Wife of Congress"
) It is a "gear box" of a sort , but it is attached in some way to the output shaft on the tranny. I'm thinking that would be the same as having a 2 or maybe 3 speed rear axle. What is your knowledge or thought. I sure Gary gtr1999 knows.
) It is a "gear box" of a sort , but it is attached in some way to the output shaft on the tranny. I'm thinking that would be the same as having a 2 or maybe 3 speed rear axle. What is your knowledge or thought. I sure Gary gtr1999 knows.
Last edited by rayluka; Sep 28, 2008 at 07:16 PM. Reason: sp check
Drifting
Joined: Jul 2002
Posts: 1,944
Likes: 20
From: The only Corvettes in Highett Victoria
Ray,
These overdrive units have been around for quite a while and I have not heard anything bad about them, but I think that they're a waste of money, especially in a Corvette. The trans tunnel is quite small and the unit may not fit without some surgery, and your tailshaft will also have to be shortened or swapped for a shorter one. Yes, you can do it, but there is a better way.
Look up one of the Forum vendors such as Tremec, Bow Tie Overdrives or Classic Chevy 5 Speeds and consider replacing your direct drive ( top gear) transmission with an overdrive five or six speed transmission. Some of them will allow you to retain your stock driveshaft, so you will save even more money.
Regards from Down Under
aussiejohn
11 months to go
These overdrive units have been around for quite a while and I have not heard anything bad about them, but I think that they're a waste of money, especially in a Corvette. The trans tunnel is quite small and the unit may not fit without some surgery, and your tailshaft will also have to be shortened or swapped for a shorter one. Yes, you can do it, but there is a better way.
Look up one of the Forum vendors such as Tremec, Bow Tie Overdrives or Classic Chevy 5 Speeds and consider replacing your direct drive ( top gear) transmission with an overdrive five or six speed transmission. Some of them will allow you to retain your stock driveshaft, so you will save even more money.
Regards from Down Under
aussiejohn
11 months to go
