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Re: Do factory truck small blocks usually come with steel cranks?
Quote:
Originally Posted by stsalvage
My Bad I was told to day that the crank has to be swapped to have a 327 large jernol.Then what happens to the other way around for the 307 block with a 350 or 400 cranks
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The 307 has a bore of 3.875" and the 3.25" stroke same as the 327. The 305 has 3.736 bore and 3.48" stroke. So you wind up with a 305 that has been overbored .139 or some motor in the 315" range.
Makes no sense from a performance standpoint to build the small bore motors as you just can't get a big valve head and they shroud the valves as well.
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69 Chevy Short Step 4 1/2"/7" drop
72 Jimmy 4WD 4spd 4" & 35's
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