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Outlaw72 · 06-15-2009, 11:17 AM

FWIW....I had a 408 once in my 72 running a dart 200cc iron eagle head. Compression was around 10.4:1 and used pump gas all day long. The best way to determine your runner IMO is to know what RPM's you will run. If you shift above 6,200....then a 220cc runner head is not overkill at all. If you are below this RPM a 200cc runner head will be fine. A 220cc head will not benefit you at all unless you spin the engine higher than 6k - 6.2K

06-15-2009, 11:17 AM	#16
Outlaw72 Hay Team!! Join Date: Jun 2003 Location: Ft. Worth, TX, USA Posts: 366	Re: 76cc sbc head FWIW....I had a 408 once in my 72 running a dart 200cc iron eagle head. Compression was around 10.4:1 and used pump gas all day long. The best way to determine your runner IMO is to know what RPM's you will run. If you shift above 6,200....then a 220cc runner head is not overkill at all. If you are below this RPM a 200cc runner head will be fine. A 220cc head will not benefit you at all unless you spin the engine higher than 6k - 6.2K __________________ 1972 Chevrolet Cheyenne LWB "Orange and White" 8) Last edited by Outlaw72; 06-15-2009 at 11:19 AM.