I built 440 and 426 hemi-based truck pull engines for several years, including a bored-out hemi that ended up at 547 cubic inches after filling the cooling system with epoxy and boring all the way through the cylinder walls in places to accommodate big flanged sleeves. We didn't even fire that engine up until after we towed the truck onto the pull track with a 4WD tug and hooked it up to the sled. No dyno runs, but we were estimating 1200+ HP on an alcohol/nitromethane mixture and fuel injection.
Jerry
Hey Jerry,
Got any junk 426 blocks hanging around?
