Today, dollar for dollar, is the 318 faster than the 340 ???

RustyRatRod said

I think you may be right about having to use the poly camshaft, too. Hell, just build the poly and bee did wif all dat, yo. lol

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I'm pretty sure the poly uses it's own cam because of the valve arrangement. There was a Poly in the Engine Masters Challenge a few years ago.

Daniel Boshears Brings a Poly 318 Stroker to the 2018 Engine Masters Challenge (motortrend.com)