Under drive question
Pro
Joined: Jan 2005
Posts: 686
Likes: 62
From: San Jose Ca
Probably will not work. The majority of the LT1 F-body underdrive crank pulleys require you to stack the original pulley on top of it to maintain the original ballance and reduce costs as they can use a lower cost aluminum pulley. This works on the F-body because there is plenty of room in front of the crank. Not so on the Y-body. Underdrive pulleys for the Y-body are designed to replace the original entirely as there is no room to stack the original on top of it. That's why the 'vette underdrives are usually much more expensive. And learning is half the battle... 
Team Owner
Joined: Dec 2000
Posts: 90,675
Likes: 304
From: SE NY
Cruise-In II Veteran
Ask Summit for the March 1993-1996 LT-1 Corvette Power & Amp series pulley set, P/N 4425. The set consists of steel gloss black powder coated pulleys:
4141=6-rib crank pulley (underdrive)
110=6-rib alt. pulley (overdrive)
If Summit can't cross to the March numbers, give a call to March direct.
4141=6-rib crank pulley (underdrive)
110=6-rib alt. pulley (overdrive)
If Summit can't cross to the March numbers, give a call to March direct.
Instructor
Joined: Aug 2004
Posts: 151
Likes: 0
ASP Underdrive Pullies
Below is a link to ASP pullies for Corvettes. It even lists the idle speed required to achieve full charge.
http://www.aspracing.com/gm.htm#corvette
It's a direct replacement for the original crank balancer. You will have to run a shorter belt though.
http://www.aspracing.com/gm.htm#corvette
It's a direct replacement for the original crank balancer. You will have to run a shorter belt though.
Pro
Joined: Jan 2005
Posts: 686
Likes: 62
From: San Jose Ca
Originally Posted by Diesel68
Below is a link to ASP pullies for Corvettes. It even lists the idle speed required to achieve full charge.
http://www.aspracing.com/gm.htm#corvette
It's a direct replacement for the original crank balancer. You will have to run a shorter belt though.
http://www.aspracing.com/gm.htm#corvette
It's a direct replacement for the original crank balancer. You will have to run a shorter belt though.
