333 heads
You mentioned "high performance" build, but I have to ask what horsepower range you would like to be in. Not sure what you can get out of those 333 heads, but other options are more expensive. Actually, modifyng the 454 crank can be somewhat expensive in terms of machine time/shop time. Given enough time and money, most anything (within reason) can be accomplished. Lots of new lighter stronger products these days, better pistons, valves, springs, cams, that sort of thing. You will have many options
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So we need to know approximately what kind of horses you seek to harness, and if you have any budgetary restrictions
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I built a stroker engine using a 1964 truck block, Ross pistons, BBC rods, and a 396/427 crankshaft. Runs pretty good in a street driven 1962 Impala. I use pump gas, pistons are 10:1. I went with an original Borg Warner T-10 four speed because I was trying to remain stock-like. Rear end is a posi with 3.36 gears, kinda sluggish out of the gate, but rolls down the road well
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Best,
TomK