dezlfrek

iTrader: (1)

I'm at 16psi and around 650 rwhp now but I wanted to try for an 8.9x so how much boost have you made? Or how much power? L33 only please. Even tho mine is only a 4.8 +.050 but thanks.

2muchboostNY

iTrader: (8)

Not mine but good info: https://ls1tech.com/forums/forced-in...s-jy-5-3l.html

ZGLASS

iTrader: (11)

20+lbs mid 800s not issues pump and meth. meth issue killed it at 23lbs

chiaj144

iTrader: (4)

Here's one with a partial block fill. Methanol for fuel too I believe.
http://www.yellowbullet.com/forum/sh...938&highlight=

Forcefed86

iTrader: (4)

My alum 5.3 took 25-26lbs at 17* for 8-9 runs before I blew a HG. Keep the timing low and crank that sucker up to 25. Should be able to handle even more with the short stroke. 17* was on the high side. I'd keep it around 12* to start with over 20 on mild builds. Then see how it acts from there...

dezlfrek

iTrader: (1)

Thanks for the replies.. seems like the blocks are the week spot but the head gasket become the problem.. I will probably get my 8.9x run at around 22 to 25psi I think and it should be OK for it.. if the gaskets don't hold I will go to 625 studs.. I run them in my truck at 70 psi lol