Right now I'm at 5lbs with the stock pully on my 5.3 with the Whipple. Of course, now I want more. Is there a smaller pully I can get to up the boost a little? Who has them? Will I have any issues runinng say 7-9lbs on a stock bottom-end given I have a good tune, 42lb injectors, and meth?

Thanks,
Scott

 

i dont see a problem with 8psi on stock bottom with a GOOD tune and meth.

 

I think your trans will complain before your engine. I don't know anything about the pulley's for your setup though, sorry. Watch out, boost is addictive!

 

also i was thinking about an intercooled setup, id want some way to monitor the AFR via a wideband

 

Whipple is the only place to get pulleys that I know of. They make them in any size in 1/8 inch increments. I forgot the range that the guy told me, but I remember that they go ridiculously small. Each 1/8" smaller gives aboot 1 added psi.

 

Sure is addictive. How much are you pushing through your 5.3? I started collecting parts for a forged 370.

I have a wideband and HPT for logging. I'll have to look into a intercooler setup for this.

 

there isnt an intercooled version out, youll have to make your own.

 

Thanks. Is your motor stock except for the Whipple?

 

Yeah, for now.

 

and alot more heat

I was told that the 3.5" pulley is as small as they go.