Chevy Crankshaft #

DrHP · 04-10-2011, 03:27 PM

It probably doesn't make any difference, but the Z28 302 was derived from using a four inch bore 327 block and a three inch stroke 283 crank. I am a former national record holder with a '69 Z28 from back in the late 70's, know this engine inside and out. I feel that if you are building a competitive Super Stock version, you should go for a quality crank, because you will end up reving this combo into the stratosphere to get really good power, also select your trans gearing properly. The stock crank (I remember the 6764 as being a steel 283 crank) is a 1053 steel part, fairly stiff with the short stroke, but and not very tough compared to a modern non-twist 4340.

My two cents, Dennis Baccus

04-10-2011, 03:27 PM	#8
DrHP Junior Member Join Date: Feb 2011 Location: Walla Walla WA Posts: 8 Likes: 0 Liked 0 Times in 0 Posts	Re: Chevy Crankshaft # It probably doesn't make any difference, but the Z28 302 was derived from using a four inch bore 327 block and a three inch stroke 283 crank. I am a former national record holder with a '69 Z28 from back in the late 70's, know this engine inside and out. I feel that if you are building a competitive Super Stock version, you should go for a quality crank, because you will end up reving this combo into the stratosphere to get really good power, also select your trans gearing properly. The stock crank (I remember the 6764 as being a steel 283 crank) is a 1053 steel part, fairly stiff with the short stroke, but and not very tough compared to a modern non-twist 4340. My two cents, Dennis Baccus