94 mustang 351w throws belts

[laserstang94]

Can anyone help me please?! I got a 351w in a 94 mustang that keeps throwing belts. The first one was a stock piece and it threw it the I fond that it was too long. Next I got one a inch shorter and it was thrown. I am all out of thoughts. Any help is apprieciated......

 

[cjones]

first thing. make sure all the pulleys are lined up and do not wobble.

then take a string and wrap it around the pulleys just like the belt goes and mark it. remove the sting and that is the belt length you need. don't forget to pull the tensioner back when doing this or the belt will be too long.

 

[Venom351R]

I'll check the #'s on my belt in the morn and let you know the length.

 

[86bluecobra]

I would be inclined to think that your pullies are not lined up straight. Start there.