perryh posted:Regarding the use of a Windsor block, is there any benefit to dealing with putting Cleveland heads on that block vs. just using well designed aftermarket Windsor heads?
A 9.2 Windsor block equipped with Cleveland heads would allow you to re-use the 351C exhaust system. That would be the main benefit for choosing Cleveland heads. Intake manifolds and oil pans will need replacement regardless of which heads you choose.
There are excellent choices among SBF/Windsor cylinder heads. I would suggest considering Ford Racing's N351 sportsman heads (iron) for use with an iron Windsor block. They were designed by Robert Yates. They have 10 degree valve angles, unshrouded valves, etc. The only draw back to using them has been their "on-again, off-again" availability. I don't know where their availability stands today in (almost) 2020.
Another unique choice in cylinder heads is the Kaase P-38 heads. These heads have SBF architecture, they are direct bolt-on heads for a SBF/Windsor block, they use SBF/Windsor manifolds and headers, yet they have canted valves! Jon Kaase was a protégé of Dyno Don Nicholson, and he is a devotee of the Cleveland cylinder heads. Kaase's P-38 heads are hybrid SBF/canted valve heads, they have well designed modern combustion chambers, and they flow better than Cleveland heads especially at low lift.