The Exh Manifold test will be very interesting as that 4.210" stroke and it's resultant fast pick up of piston speed from BDC wants to pump out a lot of spent gases very early on that Exh stroke!
The 670 castings do not have much Exh port floor which may make them more sensitive to Exh back pressure then other factory castings.
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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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