i have a 88-92 f-body serpentine system on my 85 monte carlo ss. i will be putting on a underdrive crankshaft pulley, i size belt will i need? i have a a/c delete & smog pump delete pulley on it.


sometime this year i will be also putting on a caprice water pump pulley on with the underdrive crankshaft pulley, what size belt will i need for that too?

 

well depending on how big the actual pulley is it will vary. just go to the local parts store and keep getting belts until you find one that will work. i had to return 5 belts when i installed my underdrive pulleys and deleted my smog pump only to come find out the stock belt fit perfect since i deleted the smog pump too.

good luck!