ok i have looked everywhere and im trying to find out when a b20 swap is done in a ls do you use everything down to the crank pulley or do you just go with b20 parts, ex: b20 alternator, ps pump, or ac compressor. the belt from the ls alternater doesn't fit when switched over to the b20 longblock

 

ya the crank pulley is different on the b20 so you have to use the crank pulley from the ls and the belts will be the same size... or find a belt that fits.... i didnt want to switch out the crank pulley the first time i did it so i found a belt that fits... i jsut went to autozone and found a belt that was like 2 inches shorter... or 2 inches longer... i forget which..

 

yea took me a while to get it right, but i used the b20 crank and trial and error at autozone, had to do 3 returns but i gots it!!

 

yea i thought it was going to be easy to do the b20 swap but i ran into a few complications along the way first was the crank pulley, then the crank angle sensor then the distributor then last but not least the dipstick hitting the hood