Thread: Chevy 307 V8
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Old 07-14-2008, 02:21 PM
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Re: Chevy 307 V8

You can stroke a 305 - using a 400 crank (3.75" stroke) on a 3.766" bore (.030 oversize 305) will yield 334 cubic inches or 5.5 liters. I don't know if they're still available (I don't see why not), but there are/were kits on the market for this purpose. They came with the prepared crank, rods and pistons. You will also need to use a 400 externally balanced flexplate and harmonic balancer - same as with the 377/383 stroker.

Prep the crank as you would for a 350 stroker, and make certain you have the rotating assembly balanced afterward (if you want it to live beyond break-in).
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