340 Piston Selection

yellow rose said

I know what it's for. So you'd tell someone to mill .060 or more off a head and waster a casting rather than fix it right by d caking the block? That's just stupid. I say it over and over and over since 1980, if you are running a 340 and the heads are the open chamber type the piston MUST be out of the bore to get the compression up.

If your engine builder doesn't understand that, kick him to the curb.

Click to expand...

Ok i said i was out and you want more answers?
The correct solution is to not buy those heads in the first place,the ones with closed chambers are a better starting point then mill them or fill the chambers to the size required to create the desired compression with a flattop,but 1Badcolt is past that option now.
Seriously doubt the heads will be wasted my milling them to closed chamber,but i would confirm the deckthicknes with Edelbrock first or someone who has done the same in the past,i know it has been done.
Decking the block until the piston is .060 out of the bore or whatever is required seam incredibly inteligent to make sure that the block,head,intake and rotating assembly combination has no chance to ever be used again with a different set of heads in the future if plans change as they often do but hell in 1980 there where still plenty of unmolested 340s around to waste.


Thanks for the advice,i will kick myself to the curb or in the *** or whatever when i get my heads cut just that much to get my **** done less wrong than it was in the first place,after making damn sure the heads have enough meat to cut that much,but i doubt it will be a problem.