Quick Question: What alternator belt for a LS-V Set up?

Brain fart; I cant find the old belt I had so I need to just buy a new belt.

I have a LS block with a GSR head, what alternator belt I need to buy?

LS or GSR...

thanks in advance!

 

well it all depends on what alternator and what crank pulley your running

 

Belts come in .5" incruments, use a piece of string to get lenght, go to parts store have them measure the string and get you a belt, easy as that. 94