For this build we use a deck height ARC billet rod and flat top piston combo, an E-Start ARC billet flywheel and NR's infamous 274 06 07 camshaft. The block was also fitted with head and side studs and the sidecover was vented before bolting on a milled and ported, 14cc head with 27/25 SS valves with 36# dual springs with aluminum retainers. The 1.3 ratio EC Roller Rockers offer the .274 cam .356 lift at the valve and fit nicely under the stock valve cover with baffle in place. A genuine Mikuni 24 flatslide carb kit takes care of fueling needs. This engine has a 13.5 to 1 compression ratio and should make north of 17HP on Premium pump gas, at the turn of a key. We can dyno test to confirm.