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Jim Hanig · 11-06-2017, 07:25 PM

Alan 20 years ago we bored them 60 all the time for stocker engines, but i think 30 as long as you dont plan on making more than 500 550 hp they are not very thick 180 or so. Good luck.

11-06-2017, 07:25 PM	#8
Jim Hanig Senior Member Join Date: Aug 2006 Location: Pukwana SD Posts: 860 Likes: 554 Liked 99 Times in 49 Posts	Re: Boring out a early model 396 Alan 20 years ago we bored them 60 all the time for stocker engines, but i think 30 as long as you dont plan on making more than 500 550 hp they are not very thick 180 or so. Good luck.