on my set up a 2.8 pulley only gives me 7psi. on monday am going to order a 8" crank pulley to overdrive my blower. looking of 10-11psi out of my 112hh. i have a 3.3,3.1,3.0,2.8 pulleys. a 3.0 gave me 6psi what will give me 10-11psi?

 

8" crank pulley = about 2 blower pulley sizes smaller, so your 2.8 will act like a 2.6, it will be close

 

i saw some one was making 15psi on a 8"crank pulley with a 2.8. i was hoping to run a 3.1 or so for belt slip. and still have 10psi.

 

must have been Joe, in addition to our 8" crank Pulley and 2.8" blower pulley, he is overdriven in the rear due to his jackshaft setup; we don't have that option on the truck systems ........unless you have the same setup?

 

I am running the 3.2" pulley now because the 2.8" would have given about 20-21psi of boost. The rear of my MagnaCharger has an overdrive, it is a front inlet rear drive. Sorry if it is confusing.

 

where can I get a 8" crank pulley?