Merge collectors

Ed Wright · 10-02-2015, 09:05 AM

Has everybody else found those to be faster?

So far, my car is faster with straight collectors. Tried two sets built for a friend's LT1, best set made no difference, he found the same. Other set also slowed mine down. I was told that was because I had too much exhaust lobe, I only have 4 degrees more than the intake @ .050", less than 4 at .200" lift.

Ditto step headers. Mine likes straight 1 7/8" primaries, straight 3 1/2" collectors. I am doing something wrong. Seems like I have wasted a lot of money on trick parts. I must be doing something wrong. When looking at Cour's & Decker's times, something very wrong. smh

10-02-2015, 09:05 AM	#6
Ed Wright Veteran Member Join Date: Mar 2005 Location: Sand Springs, OK Posts: 8,132 Likes: 896 Liked 390 Times in 170 Posts	Re: Merge collectors Has everybody else found those to be faster? So far, my car is faster with straight collectors. Tried two sets built for a friend's LT1, best set made no difference, he found the same. Other set also slowed mine down. I was told that was because I had too much exhaust lobe, I only have 4 degrees more than the intake @ .050", less than 4 at .200" lift. Ditto step headers. Mine likes straight 1 7/8" primaries, straight 3 1/2" collectors. I am doing something wrong. Seems like I have wasted a lot of money on trick parts. I must be doing something wrong. When looking at Cour's & Decker's times, something very wrong. smh __________________ Ed Wright 4156 SS/JA Last edited by Ed Wright; 10-02-2015 at 10:48 PM.