SK_BlownThunder
Registered User
When you put underdrive pulleys on, what do you put them on and what is the entire purpose of doing them. Are they bigger or smaller than the stock pulleys? I plan to use a 5% overdrive pulley on the stock blower of my '90 SC. As far as I know, underdrive pulleys transfer the torque needed to run accessories down to the crankshaft where it is needed most. What particular thing do you put them on? Supercharger ider pulley, p/s pump, A/C compressor, water pump...? Help me out here. Thanks!