340 help

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twool

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do not have orig. heads magnum or 308 casting which is better
 
Kind of a loaded question. Do you have ANY heads, or do you have a set of "not" original heads?

Depends on that and how much money you have / want to spend.

Depends on whether you want to spend some on porting, etc

And, it depends on the "deal" you fall into / come across. In my area, finding good useable sets of Mag heads is kinda difficult.
 
How about, sell the 340 bottom end and buy a complete junkyard magnum, and be way ahead of the game? They go 200k+ without bore wear.

Magnum head cracks are over-rated. If they haven't hit water by now they won't.
 
if im at 10.5 to 1 comp r. with mag heads milled would that bring me up to 11to1
 
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