Did you check your deck clearance with the stock rotating assembly ?
95 % of 455's I have worked on had a .013" deck clearance.
Most 455's also seem to need to be decked .006" to get things the way they should be in terms of being square and to even out the deck.
If you deck the block.013" for zero deck height then you have 2 more CCs to play with.
You also have the option with the custom piston of having it made with a plus .010" deck height.
I see you unshrouded the shallow side of the chamber lip, what gains or losses did that work produce on a flow test?
__________________
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; 08-23-2021 at 06:11 AM.
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