Chris Craft Commander Forum: If it runs good, who cares what it is?

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If it runs good, who cares what it is? November 15 2006 at 1:40 AM		Roy (no login)
Response to Well Jeff...

CI = bore x stroke 302 = 4.000" x 3.00" (Gen.I, 5.7" rod) 305 = 3.740" x 3.48" (Gen.I, 5.7" rod) 307 = 3.875" x 3.25" (Gen.I, 5.7" rod) 325 = 3.779" x 3.622" ('99-later, Gen.III, "LM7", "LS4 front wheel drive V-8" 5.3 Liter Vortec, 6.098" rod) 327 = 4.000" x 3.25" (Gen.I, 5.7" rod) 345 = 3.893" x 3.622" ('97-later, Gen.III, "LS1", 6.098" rod) 350 = 4.000" x 3.48" (Gen.I, 5.7" rod) 350 = 4.000" x 3.48" ('96-'01, Gen. I, Vortec, 5.7" rod) 350 = 3.900" x 3.66" ('89-'95, "LT5", in "ZR1" Corvette 32-valve DOHC, 5.74" rod) The 302 has the same bore as the 327 and 350. The 305 has the same crank as the 350. The 307 has the same crank as the 327. It's well nigh impossible to figure out what crank or bore you have if the motor is still put together. Once you start swapping blocks and heads, all bets are off because there are so many combinations. If you have an original motor with a tag on it, then you have some assurance of what you have. If it runs good, it really doesn't matter what it is. Roy

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