Crank Pulley question
 

I am running the original 7.25" crank pulley on my firebird and was interested
I running the 8" crank pulley to speed up the pump and fan. I currently have
a 6" billet aluminum waterpump pulley so my ratio is at 120% now. Figure
more would be better with the 8" pulley.

Just seems to me in my car there would be minimal room for belt changes as the
pulley would be way close the the subframe. What are you guys running for a
crank pulley that is 2 groove.

Gerry

I don't think there is really much variation in crank pulleys. My pulley is also very close to the frame, and depending on how my motor is positioned in the mounts it is almost impossible to get a belt on. I adjusted it back just a touch so now it is ok.

I also have the 6" WP pulley. I think the only way you can alter WP speed is with the WP pulley diameter. The factory did it this way, depending on engine/cooling options.