well i had a 3k that was running 31hp at the wheels :dance:
swapped it out for a 4k we rebuilt cammed, lightened flywheel, increased comp, carb etc. havnt had it dyno'd but id say its making at least twice the power... can't find the cam specs though but it was like 270 duration 4.1 lift. revs to like 6k and blows excels off the line :laff: