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I wouldn't plan a 4.5 stroke in a 440 block for anything beyond about 600 hp, and then only if I had a very light rotating assembly and / or a center weighted crank to help relieve stress on the bottom end combined with small port heads....
At that point, why bother with the long stroke if you're not going after a big HP number? Get a Megablock or other aftermarket block, let it eat, and sleep soundly.
The reasons are budget, what's on hand and the torque range desired.
8..603 156 mph best, 2905 lbs 549, indy 572-13, alky
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