lester985
01-21-2010, 03:31 PM
i put this in a older thread but its good info i just got the phone with four stroke tech about there drop in cam and the guy talked me out of it because i have a stage 2 hot cam in it and the guy asked what comperssion am i running 11:1 and he said its more like 10:1 what i will have to do is take the base gasket off and replace with hondabound and get a xr 400 head gasket it will wake any 400ex up just somee good info