A different lower pulley swap question....

[SVTyballz]

I am contemplating a lower pulley swap. If I do that, I am going to put an underdrive pulley on the alternator. My question is : How do I determine how large of an increase in the alt. pulley is needed ? I think I can figure it out, but there are no dimensions ( that I have found) for the lower pulleys. They are all listed by boost increase, not size.

gary

 

[Elapidae]

This is from another board and it was a guestimate I think.

2 lb is 7.9 inch , 4 lbs is 8.5 inch , 6lbs 9.0 inch

 

[SVTyballz]

Thanks. Those numbers seem like the right ones. All i have to do is figure out which alt. pulley to go with. Then belt size............. dammit, i should just go with the upper pulley. Would be alot easier................ Oh well.

gary

 

[cubes]

I want to know how a lower pulley affects all the accessories.

 

[SVTyballz]

ttt Any ideas on alternator pulley sizes?? Thanks

gary