m6camaro

iTrader: (11)

What do you guys think about running 1 7/8 over 1 3/4 on a 370 LQ4 with:

100mm lid
100mm maf
ported fast 90/90
Patriot stage III LS6 heads with 2.08/1.60 valves that flow 320cfm
232/234 598/601 on a 114+2
Underdrive pulley
ORY with hooker catback and a cutout

What kind of power would I pick up with this setup with the 1 7/8 over my 1 3/4 headers? I am hoping for 490-500.

TIA

TopFlite

Nice looking ride! I think it will only help your setup breathe. And that's a good thing.

A. R. HEADERS

M6Camaro, I believe you are in 1-7/8" territory. You also need a Y-pipe with more than a standard outlet. At your power level you'll see more improved top end performance with the 1-7/8 without sacrificing low and mid range power. When you have a moment give me a call at 631-608-1986 and we'll go over your combo in detail. Thanks.

Nick
A.R. Headers

kozak

iTrader: (2)

you seem to be on the go big or go home track. Why not a ported Fast 92/92 while your at it.

m6camaro

iTrader: (11)

I got too good a deal on a fast 78 and I ported it out to 90mm and mated a PP 85 mm TB to it. I also ported each individual runner.