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Old 03-26-2007, 07:56 AM
joe_padavano joe_padavano is offline
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The 330 is an underrated motor, but why not go to a 350 or 403 Olds? All Olds small blocks have exactly the same outside dimensions and the same stroke. The 403 has the disadvantage of the awful windowed main webs, but for a mild build it should be fine and there's no replacement for displacement. The 330 has one advantage, which is the stock forged crank. This crank will drop into any Olds small block (except the diesel block) with proper rebalancing. The 403 rods are much beefier than other small block rods. I'd suggest a 350 or 403 using a 330 crank. This avoids the issue of 45 deg cam bank angle vs. 39 degree used on all 68-up motors. Put together a set of W-31 spec heads, a decent dual pattern cam, and a Performer or Perf RPM intake and you're good to go.
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