Is this posable im looking for big performance jumps and I was told that a 350x head will work on a 300ex motor if I remember it right a 300ex in GNCC that had a 300ex head on it will a whopping 392cc of woop@$$


So if you have any idea at all it would be greatly appreciated

 

If they do line up you would have to bore the case halves to allow for the bigger piston. This would be basically involve taking the whole engine apart, not worth it in my opinion. I think the largest bore you can go on a stock sleeve is 76mm and the 350x stock bore is 81mm. I would just go with Mickey Dunlaps 330 kit Big Bore(or equal) including stronger valve springs and all the other misc. stonger parts you'll need to maintain a shred of liability.

 

But with a 330 it your still sitting in the dust behind the 400ex with a 350x head with some mods they would be eating your dust I just need some help with the subject on if it can be done and if so how to do it and if you would ask why go to such an extreme length to run with the 400ex just go out and by one but i cant give up my 300ex why by a 400ex with no reverse and get put in to classes with Raptors R's Cannondale and Banshee were a stock 400 will get is but kicked by any one of these bone stock quads and then there is a 300ex with a 350x head is it can be done that destroys its coemption and for all of you that's the Warrior Lakota Mojave and the Blaster