Actually Grub that enine was one of them that was eliminated from the stock altered class because of the cid in stock form. It is a 4 inch stroke out of the box. 3.5 inch bore stock. I had a billet rod made for it, a steel billet cam and gear. Last year I had no problem running down the vannys and most of thekohler singles. I got bumped up in class because of the way it ran. This year it is a bigger stroke, bigger bore, .535 lift isky cam, BIG carb, billet head, 50+ cid. The fun part is beating up on the engines that are the norm and built with parts bought out of a book. Everything in this engine is custom one off. It worked very very well last year. Should make over 50hp and torque in the 60 ish lbft this year. 7000rpm. S&S Super B carb. There as very good engine. They have a forged steel crank from the factory. 2 piece block. Crank case and jug are separate. Opened alot of eyes with it last year. Looking forward to do the same this year.