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drolston · 12-04-2017, 11:45 AM

Looks like you will end up with 270 or so cubic inches. The 390 CFM Holly might be better suited than the 465. Relieving the area between the valves and cylinder is worth the time and effort. Porting the intakes is much less return on time and effort, but you can get some of that type benefit from cut down valve guides and power-flo valves.

The EAB cam is good for low-end torque; other than that, it is cubic inches, especially from stroke.

I have no personal experience, but the consensus on this board has been that center port dividers do not benefit performance.

12-04-2017, 11:45 AM	#3
drolston Senior Member Join Date: Jun 2014 Location: Williamsburg, VA Posts: 1,811	Re: Building for Torque Porting Question Looks like you will end up with 270 or so cubic inches. The 390 CFM Holly might be better suited than the 465. Relieving the area between the valves and cylinder is worth the time and effort. Porting the intakes is much less return on time and effort, but you can get some of that type benefit from cut down valve guides and power-flo valves. The EAB cam is good for low-end torque; other than that, it is cubic inches, especially from stroke. I have no personal experience, but the consensus on this board has been that center port dividers do not benefit performance.