who here races with exhaust manifolds?
Hi - My 69 Chevelle has manifolds and was thinking of getting her to the track BUT.... was interested to see what folks are running ET / MPH wise with stock or ported exhaust manifolds... anyone?
On a side note, my car looks like a stock 396/350 hp car but dyno'd 450hp/530 tq with cast iron GM intake & a Qjet (albeit with dyno headers)...
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