Run the -4 heads and get dished Pistons to achieve your desired compression ratio.
I find no flow advantage on my flow bench to the -4 chamber shape or the -8 chamber shape in regards to either head running the stock 1.66" or the larger 1.77" Exh valve .
The layed back area of chamber enlargment in the - 8 head is more than 1/2" above the Exh valve seat and has no impact on Exh flow!
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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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