Would i benefit from 1 7/8 headers
Thread Starter
Racer
Joined: Jul 2015
Posts: 267
Likes: 8
From: Murfreesboro TN.
Would i benefit from 1 7/8 headers
So as of now i have a stock car with cat back and cai. But have picked up a set of TSP 225 as cast heads and a fast 102/102 setup im also ordering a tick cam. I think 1 3/4 would work for now my concern is i have a LS2 block im wanting to build a 408 with flat tops and -4cc valve reliefs looking at 11.5-12.0 to 1 compression. I just dont want to have to change headers after the bottom end build.
Safety Car
Joined: Jul 2004
Posts: 3,904
Likes: 29
From: Vancouver Washington
Most motor builders will tell you that there's no advantage to 1 7/8" headers until you hit 440 cu in. Although the larger headers may give the 400+ cu in engines a little more top end horse power they will actually reduce the torque in the more usable RPM range.
Le Mans Master
Joined: Aug 2005
Posts: 5,375
Likes: 328
From: CA.
St. Jude Donor '13-'14-'15
If planning for future mods then yes pull the trigger on the 1 7/8 You may lose a little TQ with your current combo-- but make it up on the top end anyways
Racer
Joined: May 2012
Posts: 330
Likes: 2
From: Visalia California
http://ls1tech.com/forums/generation...o-results.html
1 7/8 headers lose practically nothing on even a stock ls1. The gain outweighs the minimal loss, especially in such a light car like a c5. If you can swing the dough get the bigger headers and you'll be set for whatever you plan. That being said I have 1 3/4 myself and am perfectly happy so either way will be a huge improvement over stock.
1 7/8 headers lose practically nothing on even a stock ls1. The gain outweighs the minimal loss, especially in such a light car like a c5. If you can swing the dough get the bigger headers and you'll be set for whatever you plan. That being said I have 1 3/4 myself and am perfectly happy so either way will be a huge improvement over stock.
