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Ed Wright · 07-26-2015, 09:10 PM

About everybody has them. I did A-B-A test them on my SS LT1 car. Built on the same jig. Both dyno & race track, since we don't race dynos.
When I ordered the headers I have now from Jere Sthal, he wanted to see everything from my testing. dyno sheets, time flips, etc. He agreed that my engine does not like them. Only place mine showed anything with the steps was below 6000 RPM. My converter hits at 6200. Thinking it may hit the converter harder, and may show something. Only showed a loss at the track also. Foot brake car may run quicker with them. My torque & power was down with the step headers from 6000 to 8500. Didn't run it above that on the dyno.
Wasted money on merge collectors as well. Mine likes big tubes and collectors. I'm probably doing something wrong.

07-26-2015, 09:10 PM	#2
Ed Wright Veteran Member Join Date: Mar 2005 Location: Sand Springs, OK Posts: 8,132 Likes: 896 Liked 390 Times in 170 Posts	Re: Have Stepped Headers Been Proven Out ? About everybody has them. I did A-B-A test them on my SS LT1 car. Built on the same jig. Both dyno & race track, since we don't race dynos. When I ordered the headers I have now from Jere Sthal, he wanted to see everything from my testing. dyno sheets, time flips, etc. He agreed that my engine does not like them. Only place mine showed anything with the steps was below 6000 RPM. My converter hits at 6200. Thinking it may hit the converter harder, and may show something. Only showed a loss at the track also. Foot brake car may run quicker with them. My torque & power was down with the step headers from 6000 to 8500. Didn't run it above that on the dyno. Wasted money on merge collectors as well. Mine likes big tubes and collectors. I'm probably doing something wrong. __________________ Ed Wright 4156 SS/JA