03LQ9

Hi guys, I'm putting on a rearmount set up on my 03 reg cab Silverado with a 6.0l LQ9 that has a 212/218 .560lift and 115lsa cam. Going to be using e85 and it will be my first shot at force induction tuning. I plan on running 6-8 psi and would like to make 450-500rwhp. What plugs should I run ? Will NGK TR6's at .03 work fine ? From what I read an intercooler should not be needed, especially with a rearmount ?? Any idea what I should expect to be running for timing ? I was thinking around 18*-20* should work ? Thanks!

LS1NOVA

iTrader: (12)

TR6's will work but I had a few fouling issues with them so I switched to Autolite 103's. Now bumping up the power so switched again to BR7EF's. At that boost level an intercooler wont be "needed". I have been running in the range of 16-18 on timing.

HydroStream6

iTrader: (16)

Solid advice right there. BR7EF @ .025"

98Z28CobraKiller

iTrader: (17)

I concur on the #7 @ .025. That should be good to about 500 rwhp. I'd go to an 8 from 500-800 ish. 9's will take you to about 1200 rwhp.

On the other hand, why in the world would you put a rear mount in a truck that has a ton of room under the hood?

03LQ9

Thanks for the advise guys!
I would like to have a front mount no doubt but I got a rear mount at a decent price so I figured what the heck, got to start somewhere.