You are right, lets not high jack a thread....so....you said
"Not trying to high jack the thread. 900 cubic inch. I remember the stroke was 10 1/8 inches to where we had to shave the tranny gears to clear. I forgot the piston diameter but the sleaves where actually bored outside of the block. We couldn't use the two outside block bolts from that. Had to notch the left piston to clear the cam gear and notch both pistons to clear the rod throw. The cam was pretty thin too from the rods/crank going by it.we cut about 2500 lbs off as well. I blew the block out the front of the tractor. He could pull the sled at 25 MPH in 4th gear. Mine was closer to 150 hp. He was 1st and I was typically 3rd. An Oliver or Moline would be 2nd. My tractor never blew up and his did twice. His took 3.5 gall of high octane race fuel in the distance of the pull. Often my father would be at the end of the track with more fuel to get it back to the trailer. That was close to 20 years ago now. Lot of money for no return other then fun."
Okay, so my math may be a bit fuzzy, but at 10 1/8th stroke that puts your bore around 10.64, putting you at 900.26 ci. that being said, you would have 125 hp per hole. some of the best G pullers i have seen were only around 100 hp running 700ci. The frame isnt hardly over 20" wide, let alone the head itself. so how were you sealing the compression? assuming you were using a later model G, the base weight was somewhere around 7500 lbs, and you stripped 2500 lbs off of it? How did you manage to put that much HP to the ground running in a 5000 lbs class? How were you getting that much fuel through the carb? what sort of wheel tire combo was on that?
How did you never blow your tractor up, but you blew the block out of the front of the tractor?
Im trying to keep up here so those are just a few of my questions to help me wrap my head around that