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#1
02-26-2007, 10:00 PM
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A common piston size with a 4.250 stroker crank is 4.185, using these with a true 72cc chamber, a flat top piston with 6.7 cc valve reliefs, .040 thick gasket and zero deck for piston height and you have about 11.93:1 compression. Your actual compression will vary.
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