if i have 8psi on a 4" pulley what would a 3.5 get me?

 

It would help to know what your supercharger/engine is.

 

Some were between 0 and 25 psi... We really need more info on your setup man

 

I think hes got a kenne belle'd LQ4. If its the guy Im thinking of.

 

He has a supercharger, not a TORNADO FUEL SAVER!

 

yes i have a 6.0 lq4 with a kenne bell supercharger

 

Is your balancer pinned? My guess would be ~10psi.

 

it's not pinned yet but i am going to do it when i put the smaller pulley on. thats what im hoping for is 10 psi because i dont want anymore than that with a stock bottom end.

 

i got 6.0 forged with full exhaust kenne bell -3.5 pulley and get 7-8 pounds when i had my 5.3 stock i got 10 pounds with that pulley i just ordered a 3 inch today from kb looking for 10-12 they say 12-14 but the headers and exhaust make you loose some boost. i do have a gt3 cam fully ported heads -13 diamond pistons and callies rods. arp head studs and a pinned crank. but i need more boost its addictive. i blew up 2 stock botom ends with this blower it makes major tq my last dyno 8 pounds and exhaust 491tq no more stock junk for me. one more thing where do you have you boost gauge hooked up. i broke a tab on the passenger side of the intake it gives you a very good reading some guys put them on the end of the kb that wont give you a good reading.

 

Paragraph form makes it a whole lot easier to read alot of letters...