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Longer stroke allows for a more thorough conversion of the pressure to kinetic energy. Small ports keep intake velocities high for better homogenization and vaporization of the fuel with the air. The higher compression adds to the chemical-to-kinetic energy conversion. With a choked...

Just remembered another project I tackled 27 years ago. I took a 360 block, had it machined with a 0.030" over bore. Used '71 flat top pistons, and a Comp Cams 260H. The ENTIRE top end was 318 stuff. I used open chamber heads (which yielded a 10+:1 compression as I recall), 2 bbl carb &...

I'm curious as to how the ECU monitors for the code. I assume you have an oxygen sensor. Is it a wide band? Although I'm not familiar with that particular brand, are you able to do data logging? If so, where are your AFRs going when at WOT? It may be a software issue. Mike

An easy low-budget economy swap would be the Edlebrock SP2P intake with a relatively small (like 500 cfm) carb, Comp Cams 255 DEH camshaft, and a dual roller timing chain set-up with multi-keyway crank gear set 4 degrees advanced (unless you want to degree it in to be sure). Ideally this would...