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**Warrens69GMC** · 10-05-2020, 09:10 AM

Need to switch to another head IMO. .7 is a lot of compression to make up by milling the head.

317 shows 71cc, did you check the chamber size?

10-05-2020, 09:10 AM	#2
Warrens69GMC Registered User Join Date: Jan 2003 Location: Safford,AZ Posts: 3,626	Re: 6.0 w/ 317 heads Need to switch to another head IMO. .7 is a lot of compression to make up by milling the head. 317 shows 71cc, did you check the chamber size? __________________ 1969 307, t350 1950 Chevy Wagon 1978 Big 10 1967 C10, 250,3-OTT