03-05-2007, 08:07 AM
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CC Member
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Join Date: Feb 2006
Location: Scottsdale,
AZ
Cobra Make, Engine: Superformance, Roush 427R-095, Pro Systems carb, 2" headers, Buckshot Racefab side pipes, 10s off idle start
Posts: 705
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Not Ranked
On my engine the Superformance small block headers covered right about .3 inches of width coming off a Roush 427R with AFR 205 Heads. This made the exhaust surface area reduced by aproximentally two exhaust ports. It's probably not a big deal under 4500 RPM, but what's the point in buying a hot engine and pluging it up.
I put on a set of 2" unequal lenght primary headers from the Olthoffs that don't cover the exhaust ports. I got Buckshot Racefab side pipes.
I went to the drags recently with DA of 1480 ft. The track had terrible traction, but the Roush 427R trapped 130.33 mph.
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