PDA

View Full Version : Anybody big bore their Rap 350 to 400cc?



Blstr88
06-07-2008, 07:20 PM
I guess the title says it, any of you guys big bore your Rap 350s to a 400? I was lookin at the maxpower kits for my YFZ and I saw that they make a 400cc kit for the Raptor? Really it just made me curious, Im wondering if they actually make the Raptor match up to the 400ex/Z400s?

hatfield44
07-01-2008, 11:44 AM
I am not 100% sure, but I know if you stroke a warrior to a 400 it has the same displacement, bore, and stroke as a 400ex (1/2 the valves though). So I don't know how it will run against a 400ex much less a Z

keglassg
07-07-2008, 05:32 PM
my warrior hasnt had any trouble running with the 400's. the kfx and ltz400's are faster yes, but not significantly. but the 400 ex doesnt have much on me. im not running a 400 kit htough. its smaller. i dont know why it would run with the 400's if it were tuned right.