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Old 09-04-2013, 11:51 AM
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You can measure the depth of your pistons with a depth mic,or,in a pinch,you can use a straight edge across the cylinder top & use feeler guages to get a somewhat close idea of the the deck hgt.You will wanna measure @ least on all 4 corners with that piston @ TDC.If the block hasn't been decked,the pistons should be .025" to .030 deep.If they are any deeper,the shop used "rebuilders pistons" with the shorter pin hgt.If so,changing pistons,or,decking the block would be your only way to correct it.If neither of those is an option for you,use a .015" shim gasket to get quench as tite as possible with what you have.This will give you approx .060" quench.The stock heads are not bad heads with some work.F'bird can give you best course of action what needs to be done with them,or,recommend a more suitable head for your goals.
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