yes i did install a 4 deg advance bushing... cam gear is not adjustable....just a double roller chain... only have made about 9 passes on this motor.... maybe i'm expecting too much??...motor runs great... no issues except it seems like it should do better.... taking it to the dyno shop on the 5 of oct.... maybe he can get me in the ball park....thanks for your help... i realey appericiate it ... when i find it it will be some little thing i over looked... i will report back thanks.... caveman :? :?