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Old 03-23-2011, 07:24 PM
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Chevrolet 363 Stroker - Any Information or Experiences?

Hi All,

I was browsing through Craigslist and saw an ad for a crank for building a 363 stroker. Thinking there was a typo in the title, I clicked on it and it was listed again as a crank for a 363. So I did a search online and 363 stroker kits are indeed sold.

My question is, mostly out of curiosity, are these actually built? I personally have never seen or heard of one until now and I can't see it requiring any more labor than a 383.

To me, it seems like another odd-ball size. If you have seen, used, built or have a fact-based opinion on a 363, would love to hear your thoughts.

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Old 03-23-2011, 07:40 PM
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It looks like it's based on a 350. Unless somebody is building for a displacement restriced racing class, I'm not really sure why somebody would want a 363 over a 383?
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Old 03-23-2011, 07:51 PM
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This is usually a circle track deal to maximize displacement.

If its a 3.56" stroke (363 cid w/a 0.030" over 350 block), this can be achieved w/an undecked 350 block and rebuilder type (1.54" compression height) pistons. This will leave about 0.035" piston above the deck that will need to be either milled down or thick 0.075" (possibly) copper head gaskets used to get the quench back. MLS has a multi-layered composite gasket in this thickness, but the bore is 4.165", IIRC.
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Old 03-23-2011, 07:55 PM
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cobalt327 and Blazin72,

You both seem to be in agreement on this engine setup being for racing. I don't have any experience with circle track racing but I imagine that a circle track racer requires a high revver (or at least a higher-revving engine), because I can't see alot of power advantage over a properly built 350.
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Old 03-23-2011, 08:28 PM
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In a displacement limited class of racing, serious racers/builders want ALL that is available to them- even if it's "only" a couple cubic inches. Back "when", this same thing was done by offset grinding a LJ crank for using SJ rods.

The displacement increase is worth a lot, though- when (in racing) a 5 HP gain is considered big. But for a street engine, it really doesn't make a whole lot of sense, IMHO.
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Old 03-23-2011, 10:20 PM
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Cool, learned a few things today. Never thought 5 HP would be considered a big advantage in certain types of racing (aside from go-karts, of course). Thanks guys!
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