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I have , the 56K original mile 383 HP in my dart , it still has shim head gaskets with part number begining with 18 part number , the pistons are if i remember right .006 in the hole , should be .003 , I haven't cc'd a head yet ...



So you'll telling me they only missed by .003... That would be exceptionally close to spec... Are you sure you didn't add a zero??? Cause .030 wouldn't really surprise me... .080 wouldn't eiither...



nope it's that close , I keep hearing of these MYTHICAL blocks that are .020 or MORE than factory spec but I haven't come across one yet , maybe I'm just lucky , I have another 69 383 HP I just picked up , rering/rebearing rebuild , original pistons , guess what ...

I put these TALLER than spec blocks right up their with UNICORNS ...