superchargedyllwstang

does anybody know the size of the stock crank pulley on a 1999 mustang gt?

-I just supercharged it and took it to get dyno'd and it made 302rwhp at 1.9 pnds of boost so any help would be greatly appreciated.

pcs

so you only got 1.9 psi max? what kind of blower and what pulley size does it have on it. the stock on is 6 3/4''

mustangman281

Holy boost leak batman.

superchargedyllwstang

its a vortech v-1 with a 3.1 pulley on it..im soo lost i don't kno where to start. I checked the impeller; it spins in the right direction. Im running a treadstone intercooler with 3" piping, im pretty sure there is no boost leaks. I did loosen the blowere housing to adjust it would this do anything??

superchargedyllwstang

and i forgot to mention its tuned for the 1.9 pnds it has lmao so its quicker than it was N/A and if there were boost leaks it would run like **** wouldn't it?? there is some belt slip as well because there was some rubber on the alternator, and i can hear it when i get on it sometimes

mustangman281

Do you have a dyno sheet? I just don't see how you can make 1.9lbs of boost or even make 300hp with 1.9lbs of boost. Are you running blow thru or draw thru? Intercooled or not?

superchargedyllwstang

i dyno'd at 266 n/a 302 @1.9 lbs. I have the ford lightening 90mm draw thru. and im running a treadstone intercooler. I might have an underdrive crank pulley thats what i think....