850 barrells to 750 crankcases and head

Dec 24, 2003
Hello all,

Can anyone tell me if you can use the 850 barrels with the 750 crankcases and head ?
Would it be just a matter of buying the longer head bolts? :?:

With Thanks
Reg Ellis


The bolt spacings are wider on the 850 head so it can only be used with 850 barrels. The cases must be opened up to use the 850 barrels on 750 cases and the outer studs replaced by the through bolts from the 850.

All in all this conversion is only worth the trouble if you have a 750 bottom end with no top end and a complete 850 barrel and head and no 850 bottom end. Even then I think I'd probably just find the right parts.