1 7/8 headers for my 370??

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May 30, 2008 | 11:13 PM

m6camaro

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On The Tree

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Joined: Jan 2004

Posts: 130

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From: Austin, TX

1 7/8 headers for my 370??

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

May 31, 2008 | 12:38 AM

TopFlite

TECH Regular

Joined: Sep 2005

Posts: 453

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From: 415 Northern CA

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

May 31, 2008 | 09:05 AM

A. R. HEADERS

FormerVendor

Joined: Oct 2007

Posts: 61

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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