The shortblock consists of a 1977 440 block, 440Source crankshaft, SCAT rods, Diamond pistons. The block is all stock with the exception of the ARP main studs. No girdle, no block filler, no aftermarket main caps, etc.

The 440Source crankshaft was installed right out of the box as were the rods and pistons. Main and rod bearings went in without any issues. I didn't have to scrape bearings or re-machine the crank or anything like that.

This motor has been on and off the dyno now for a couple of years without any issues. It has somewhere between 50 and 100 dyno pulls on it now but I don't actually keep count.