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Old 07-17-2004, 12:10 AM
Excaliber Excaliber is offline
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Pretty radical cam and 12 to 1 comp on my 427 side oiler. It will idle at 1000 rpm, but it doesn't like to, 1500 is better. Plugs start to clear out about 2000 rpm and from there on,,,,, well hold on 'cause it explodes with power! I find 6000 is about the best shift point for low ET, but it will easily rev to 6500 and beyond. Thats a lot for a BIG block (bore/stroke over 450 cubes).

I reduced the base timing to about 8 to address the "ping" problem and run 92 octane. I dare NOT EVER lug the motor, I MUST keep the rpm's up to avoid a dreaded "ping" condition. As long as I'm careful, no problem with pump gas! My best ET to date is 11.90 on pump gas, retarded timing, a burned clutch and a lousy hole shot, there is certainly more speed there!

So I would say your idle and 2000 rpm situation is "normal". 9000 rpm? Hmmmm,,,,, maybe, but I wouldn't take it there. It will "live" forever if you keep it under 7000. Go to 8 and plan on a "freshen up" every year. Take it to the 9's and figure on a "freshen up" every few months! I think I'll start shifting at 5800, heck thats still fast enough for me! And from 2000 to 5800 rpm is a VERY quick trip.
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