dewck height
04-14-2010, 10:36 PM
#1
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dewck height going to be buildng a 355 soon 6 in scat rods -5 mahle power pack pistons
stock crank i think i want some where in the 11:1 Cr with Le2 heads i think they are 58cc afte ported mabee someone can chime in there? do i need to deck the block if so how much? anyone with a build like this whats your CR and deck height?
stock crank i think i want some where in the 11:1 Cr with Le2 heads i think they are 58cc afte ported mabee someone can chime in there? do i need to deck the block if so how much? anyone with a build like this whats your CR and deck height?
04-14-2010, 11:05 PM
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you need to balance compression ratio, and quench distance to figure out your deck height. With chambers that small I am not sure if you are going to be able to get your quench where it should be and still have the compression ration you are looking for with those pistons. .040 is about where you want your quench for a street motor. Usually this is achieved by zero decking the block and using a .039 compressed thickness head gasket. Your situation is different because of the stroke but for example I had to use a -16cc inverted dome piston to get 11.1 compression and a .044 quench on a 383 with 6 inch rods. Like I said you might be able to get away with that piston due to the stroke but you are going to have to crunch the numbers
04-14-2010, 11:09 PM
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nevermind, I just found a calculator online so it looks like you could either zero deck it and use a .039 head gasket or if you would like to leave some meat on the deck for future repair/mods than I would deck it to .015 and use the .026 Mr. Gasket 5716 head gaskets and that will get you right at 11.1:1
Last edited by JB_97ws6TA; 04-14-2010 at 11:14 PM. Reason: wrong gasket
04-15-2010, 10:43 AM
#6
going to be buildng a 355 soon 6 in scat rods -5 mahle power pack pistons
stock crank i think i want some where in the 11:1 Cr with Le2 heads i think they are 58cc afte ported mabee someone can chime in there? do i need to deck the block if so how much? anyone with a build like this whats your CR and deck height?
stock crank i think i want some where in the 11:1 Cr with Le2 heads i think they are 58cc afte ported mabee someone can chime in there? do i need to deck the block if so how much? anyone with a build like this whats your CR and deck height?
I have my heads milled .030, MR G 5716 .029 head gaskets and the block was just cleaned up and NOT decked. Pistons sit in the hole about .010-.012
