06-29-2006, 07:14 AM
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CC Member
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Join Date: Feb 2006
Location: Arlington Hts,
IL
Cobra Make, Engine: SPF, KC 427
Posts: 424
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Not Ranked
I think he's using a 4.170 stroke and a 6.250 rod which is not a good ratio with a 4.040 bore. Roush and Keith Craft use a SB Dart Block with thicker cylinder walls and they do a 4.125 bore and a 4.0 stroke with a 6.250 rod producing a much much better stroke to rod angle. The problem is with a low stroke to rod ratio is piston scuff and wear. Thus shorter pistion/engine life. Spend it now or spend it later.
Poolw
Last edited by Poolw; 06-29-2006 at 07:25 AM..
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