Quote:
Originally Posted by fan4chevy
Jersey,
At that crossroad of either going b case (internal reverse) for that bored out stroked gy6 150 up to 232, modifying my gy6 150 to 62mm bore and 3mm stroke or just modding to the mentioned cf250 chain drive.
Was putting in a 250 significant difference in speed and power?
Would you suggest it over a beefed up stroked big bore gy6 150?
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My personal experience is the GY6 has a wide range of options for building. The 250 has no performance engine mods available to speak of. The big bore kits once available are no longer available. No stroked cranks available unless you send the crank out to be stroked which is very expensive. The 150 is rated at 12-14 HP but only comes to 5-7 at the rear wheels. The 250 if I remember is 16HP so you can figure at the rear wheels it will be appx. 8-10 HP. With all the parts out there for the GY6 you can tripple the wheel HP but you are going to spend some $'s for the proper parts.