davec73
SCCoA Member
Guys I have been thinking of adding a pulley drop to my sc to push a little more boost. However I am going to be replacing the stock blower with a rebuilt ported early model blower with gtp coated rotors in it. I am going to add headers soon but until then is it safe to drop pulley sizes with this combo to around a 2.8 pulley or should the coated rotors and porting add enough boost for now and do the pulley drop when I add the headers? All the members on this site refer to them in% value but the drop mm sizes are 3.0 2.9 2.8 2.7 2.6 2.5 and 2.4 and anything under a 2.8 you have to machine your snout so it doesnt rub. Also do I have to run a smaller belt if I drop pulley sizes