ok today is slow on rd so ill post somethin about my s/c project just so i can have a post to answer to lol

alright

the s/c has a 6 groove pulley

our crank has a 4 groove

would it be alright to use a 4 groove belt on the s/c pulley or would it slide around to much?

 

How about stealing the pulley from the A/c and using it on the s/c?

 

i could try that

the only thing i can think that would cause a problem is pulley size

you try gettin a custom a/c pulley made lol

 

what could happen is belt slip..
we've built a car at the shop with a quite large ATI procharger blower using a 12 ribs belt and if the belt isn't VERY tight the belt will slip...
for low boost you shouldn't have problems. .but better build it tough