If your staying with the stock 3.750” stroke of the 400 then the -4s are the only way to go if your working only with 6X castings.
If your contemplating stuffing in a longer stroke crank to gain more cid then there may come a time where the -8s make more sense to avoid having to go for a dished piston.
That’s the bottom line.
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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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