Has anyone seen a correlation between block strength and stroke at say 7000 rpm for both?
ex. longer stroke = more prone to cracked main webbing?
Definitely.
The 3.75 crank seems to be perfect for the strength of the block. we've ran 650 hp 440s and hit them with big nitrous for years without cracking a single block. As soon as you introduce a big arm, things get dicey. Some of that is because the strokers are more prone to detonation with a narrower tuning window (although the same could be said of dome piston 440s).
Another consideration is piston speed, We prefer to keep the rpm down on our stock block strokers.
