I broke a belt on my 01 gt can someone post a pic or a diagram. Any help appreciated thanks.
lol because he wants his shortblock to last. Your taking a big chance running 14 psi on a stock shortblock meth or not.
OP - a 3.85 will net you about 8 psi assuming the car is mostly stock besides some bolt ons. A 3.7 closer to 9-10 psi. I would make the choice between these 2 an run one of those. On 8 psi (3.85 pulley) I made 403hp and 404tq with only other mods being full exhaust and tb/plenum. Then I built a motor!