Alternator only
Thread Starter
Instructor
Joined: Mar 2010
Posts: 205
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From: Sneads Ferry NC
Alternator only
I have a 76 vette with a LT1 in it, I am running just the alternator but I am having problems with the belt, it keeps slowly walking off. Is anyone running just the alternator? If so did you move it or what did you do to keep the belt on? I have found alternator mounts but they are for F-body cars and I am pretty sure I would hit frame if I used it. Any help would be great!
Team Owner
Joined: Sep 2003
Posts: 25,365
Likes: 2,731
I have a 76 vette with a LT1 in it, I am running just the alternator but I am having problems with the belt, it keeps slowly walking off. Is anyone running just the alternator? If so did you move it or what did you do to keep the belt on? I have found alternator mounts but they are for F-body cars and I am pretty sure I would hit frame if I used it. Any help would be great!
There is "laser aligning" devices for belt drives. You mount it to one pulley and use it to confirm alignment of adjacent pulleys. How expensive? don't know! Might the larger chains have it as a loaner? Doesn't seem likely.
Middle of this link is substantial information regarding LT1 accessory drives for all production systems. There's different hubs.
http://www.nookandtranny.com/Info_LT1.html
Burning Brakes
Joined: Jun 2005
Posts: 1,188
Likes: 13
From: Wallingford Vermont
A straight edge (of sorts) along the edge of the pulley compared to the other pulley(s) reveals a lot about belt alignment. It may look straight just eyeballing it but it's probably not. I've even used brazing rod in tight bays to check alignment. 
Le Mans Master
Joined: Aug 2010
Posts: 9,272
Likes: 17
these folks belts are a bit different then yours, you may want to post in C3, the issue may be with the alt. bracket itself, does it flex when running. I went to Allen Grove brackets(bout $90 each) for my alt and a/c , no more issues
btw. I only changed mine to match them up for the a/c upgrade. you could also go back to running the alt. belt around the crank. that would be the cheapest
just reread your post, LT1 , missed that, sorry, use washers and space your bracket foward if needed or grind them to go the other way
btw. I only changed mine to match them up for the a/c upgrade. you could also go back to running the alt. belt around the crank. that would be the cheapest
just reread your post, LT1 , missed that, sorry, use washers and space your bracket foward if needed or grind them to go the other way
Last edited by oldalaskaman; Nov 25, 2012 at 11:00 AM.
