In reply to post number 16 and a Apples to Aplles test, I guess you have never seen dyno reports where with stock heads the 455 peaks in hp at no more then 5200 while a 421 will hit peak hp at a 7% higher rpm and a 400 cid motor streches that to 13% higher rpm.
If you use aftermarket heads in such a controled test the same thing would take place, but at higher rpms, so buy into it!
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Wernher Von Braun warned before his retirement from NASA back in 1972, that the next world war would be against the ETs!
And he was not talking about 1/8 or 1/4 mile ETs!
1) 1940s 100% silver 4 cup tea server set.
Two dry rotted 14 x 10 Micky Thompson slicks.
1) un-mailed in gift coupon from a 1972 box of corn flakes.
Two pairs of brown leather flip flops, never seen more then 2 mph.
Education is what your left with once you forget things!
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