New 780cc PHP Powermouse 4mm stroker engine! For the guys who aren't quite ready to jump into a billet power valve engine we have come up with a great option. We start with your stock 701 61x cylinder and cases, add in our new 4mm billet stroker crank, epoxy and port your cases, custom port your cylinder after we punch it out with some 83mm Prox pistons, and top it off with our ADA/PHP head with our custom cut domes. 780cc's of freestyle ripping power for the low cost price of $2850 complete! This is a way better option than a big bore 760 for less cost...believe us, this mouse is mighty!!