The best stroker 408-416-426-435 combination in stock 68 340 block

Here is a lowly 440 that never got over 7.85:1 compression and went from 214 HP @ 5,500 rpm, to 441 HP @ 5,500 rpm. Dyno runs with changes made one at a time. It'll give you some idea what the individual changes will make.

Dyno testing a stock(?) 1972 440