Re: Header vs ramshorn exhaust manifold
You can do a little diggin and find exhaust system comparisons. There have been dozens of them by different magazines over the years for high perf motors and street driven stockers.
A tuned length header will build more power in a certain rpm band. Main tube length and diameter as well as collector length determine at what rpm the headers are most beneficial. You wouldn't want to run a header tuned for high rpm use puttin around town nor would you want to run a header tuned for low end torque in a high speed race situation.
Headers do give the vehicle a different exhaust note. To some loud pipes make them think they have more power. IMO some smooth ramhorns flow plenty for anything up to 400 hp or so.
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Boog
69 Chevy stepside, 358/T350, 4.11 posi, 4.5/4 drop, rallys, poboy driver
primer is finer
91 Chevy sportside, Tahoe, Yukon & GMC Crewcab All GM..'nuff said.
I stand for the flag and kneel at the cross
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