Pulley Diameters

TRWRacing said
340 with A/C Crank pulley: P/N 3671320 7 3/8"
WP pulley: P/N 3418227 5 5/8"
1.31 ratio for Max Cooling

Great info & thanks for posting!! I looked for part #s on the pulleys used, but couldn't find any #s.

My car is not far behind their MAX with a 1.26:1 ratio

yellow rose said
It funny all this is public knowledge and yet the aftermarket still makes junk pulleys in the wrong diameters.

As I mentioned/posted earlier, I think the aftermarket pulleys are primarily designed for optimum performance & not best cooling. The GO FAST guys could care less about driving for miles with their AC running :)

Supply & demand right??