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Old 11-11-2019, 10:26 AM
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steve25 steve25 is offline
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Join Date: May 2008
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When looked at in terms of pre 1971 gross HP numbers stock D port non RA type exh Manifolds have been proven to allow some 360 hp on a 9.5 to 1 400 motor, if your looking for HP numbers above that then it's atleast time for RA type Exh Manifolds or headers!

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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!

Last edited by steve25; 11-11-2019 at 10:45 AM.