Super Jet Swapping cylinders on different cases

[CRJ]

Alright, im new at this, so bear with me for a minute. I did a search but found no solid answer. My end goal for my ski is a cheap 701. Now its a 94 that came new with a z01, but i bought it with a 6m6 650. I assumed i needed a 61x bottom end at least, but i want to know, can i put a 61x top end (cylinders, pistons, head) on my 6m6 bottom end? and with that said, my pipe on my 6m6 cylinders will still bolt up to a 61x cylinder? Its a coffman sizzler that came with the ski.

to do this, whats needed? does the case need machining? will it drop right on no changes? or am i way out to lunch?

Thanks for any help!

 

[550headache]

clean up the cases and build away. you might have to port match your exhaust to the bigger 701 exhaust manifold. depends what version of the sizzler you have

 

[JetManiac]

The 650 cases need to be machined to accept the larger diameter 701 sleeves, so most prefer to just replace with 61x cases and 61x intake/reeds. You can use your 650 crank and carb.

650 and 61x/701 exhaust have identical bolt pattern so your 650 pipe will bolt right up but some port matching (open up by grinding) will help with flow.