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Re: Exhaust System Cost
Just watched the crushed vs mandrel exhaust engine masters episode.
On a 540hp LS3 the exhaust systems killed 10 hp from open headers.
Mandrel bent was 1.7hp and 2.9 tq peak to peak over crush bent. With a few spots opening up to 6tq, and back to even.
Funny thing was no big loss of tq with full exhaust, but rather a constant 10 hp. I wonder if that is something to do with the LS intake manifold having better resonance then a typical sbc dual plane?
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