[DuxHuntin]

I recently bought a sled the chassie is a 93 EXT 580 Mountain Cat and the engine in out of a 94 ZR440. Is this a good combo? Considering I cant get the damn engine to run right, should I keep at it or should I look for the stock engine?

 

[Bobinwi]

there is a 94 ext/zr 580 motor on ebay right now with a buy it now of $595. might be something to check out. but as for the 440 i heard those are strong little motors for 440's