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407 on the chassis dyno I would think would be about 450-475 at the flywheel.
Did you index the cam?
Does the guy who ported your heads have a lot of experience doing this? with Fe's ? Did he flow them ?
Did you index the crank timing mark? At TDC, my indicator reads 1 degree advanced.
How restrictive is your exhaust?
For standard FE heads/chambers, from what I see other people post, I think timing is optimal at about 36-40 degrees. I don;t know if your BT heads require different timing settings, but on the dyno you should be able to figure that out.
Has your engine builder dyno'ed other street FE engines, 428's. 427's? What HP has he got with them?
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"After jumping into an early lead, Miles pitted for no reason. He let the entire field go by before re-entering the race. The crowd was jumping up and down as he stunned the Chevrolet drivers by easily passing the entire field to finish second behind MacDonald's other team Cobra. The Corvette people were completely demoralized."
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