I would ask your engine builder exactly what clearances he saw when he assembled the motor and if the crank was cut and or the block was aline honed if he had a hand if that which produced the clearances you now have.
The one time in a 400 motor with 10w40 oil that I saw less then 18 to 20 psi at idle with a 60 lb pump was when my pump check ball was held open by a sliver of gasket material and we are talking a 800 rpm idle speed.
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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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