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#1
12-25-2012, 09:21 AM
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Dynamic compression question
How many of you guys are running between 7.5 to 1 and 8 to 1 dynamic compression on pump gas (93 octane) and what is the real limit here. After simulating an engine build on my computer, (bore, stroke, cam specs., it calculates 13.4 static compression ratio and 7.6 dynamic compression. Which means, I think, will run marginally on pump gas. Marginally, defined as, drive easy on the street and splash a little of 110 on race day. My parts consist of:
440 cfm tiger heads 535 IA2 264-270 110 lsa roller cam 2- 800 cfm carbs 4000 stall converter t-400 trans 9" rear with 3.50 gear This engine is currently running with 30 cc dish pistons and single 1050 carb, and 6.4 dynamic compression and 130 lbs. of cranking compression. Only 760 HP. Gotta do better than this! Steve |
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