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Old 06-09-2009, 12:06 AM   #3
sleepertruck72
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Join Date: Nov 2007
Location: Turlock California 95380
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Re: Ramhorns vs. Headers for MPG gains?

If you read the Engine Specification booklet that the crate engine came with it tells you what they recommend as far as exhaust, timing, oil, etc etc. At least mine did. Mine was the 350HO and it recommended headers of 1 3/4" primaries. It might be in there in it might not. I did remember reading that the engine shouldnt be broke in with headers because the heat cycles will burn the coating off or something like that... Anyhow good luck with it
On my engine the MPG's did increase.
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Last edited by sleepertruck72; 06-09-2009 at 12:09 AM.
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