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BillK · 09-10-2020, 09:10 PM

Kirk,
For basically stock engines my rule of thumb is to go by the piston sizes that are readily available. If they make a 60 over piston it should be safe to go that size. If you want to go larger with custom pistons you need to sonic check the block and then make a decision.

09-10-2020, 09:10 PM	#2
BillK Member Join Date: Nov 2005 Location: Waldorf Md Posts: 230 Likes: 12 Liked 30 Times in 17 Posts	Re: 1970 Dodge 383 overbore Kirk, For basically stock engines my rule of thumb is to go by the piston sizes that are readily available. If they make a 60 over piston it should be safe to go that size. If you want to go larger with custom pistons you need to sonic check the block and then make a decision. __________________ Bill Koustenis