[Jack21]

If I were building a 4x4, or something I needed a bunch of bottom and and mid range torque, and wanted to put it into a Windsor size and weight package, I'd go the 427W the way you've proposed. 4.03 x 4.17. That's almost an Oldsmobile motor. Gobs of torque right off idle, but out of breath by 4500RPM. Run some numbers on Dyno 2000 with this setup using 2.02/1.60 valves, and see what you get.

The 4.125 x 4.0 using SVO block and Cleveland 4v heads (2.19/1.73) makes for some interesting numbers in a Windsor sized package. See what PAW has to say about that.

Another approach might be a 429 block with Blue Thunder aluminum heads. With aluminum heads the weight penalty might not be so bad, and might work out to the better bargain $$$ wise. Run some numbers on this setup on Dyno 2000. It's a big 289, and winds like one. You're still making power at 7000 RPM. See what PAW prices that one out at.

Another sleeper. 455 Buick with T/A aluminum heads (and no name valve covers). Big bore, short stroke, winds like crazy. Has the distributor in front (like a Ford motor) and weighs about as much as a Windsor.