How much painful machining to install Boss 302 heads/intake onto an original 68 F code 2Bbl 302. My "stock" 302 is presently equipped with BIG cam, low rise single plane manifold, and an original Boss 302 780 cfm Holley carb. My cylinder heads are from a 65 Mustang, 289, that have been retrofitted with 2.02" intake valves and 1.60" exhaust valves, but seem to fall flat in the last couple hundred feet of a run. I'd interested in any info on the differences between the Boss 302 block and the stock 302 blocks.
Ron.
Ron.