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Car Forum / Ford / Ford Falcon / June 2004Crankshaft Swap 250
Anyone out there have any experience in fitting the crank out of a 221 six (3.6l) into a 250 crossflow? In theory it should give greater capacity???? What else has to be changed? Welcome any feedback.  Signature---------------------------------------------------------------------- _--_|\, From Townsville / \ in sunny \_.--._/ North Queensland v AUSTRALIA. -------------------------------------------------------------------- > Anyone out there have any experience in fitting the crank out of a 221 six > (3.6l) into a 250 crossflow? In theory it should give greater capacity???? Nope. It's a shorter stroked crank, so it'll give a smaller capacity. The two engines also have different shaft and block tunnel sizes, so if you actually wanted to use one for some strange reason, you'd have to get custom bearing shells made. -- Regards, Noddy. >> Anyone out there have any experience in fitting the crank out of a 221 six >> (3.6l) into a 250 crossflow? In theory it should give greater capacity???? [quoted text clipped - 6 lines] >actually wanted to use one for some strange reason, you'd have to get custom >bearing shells made. One reason I bumped into was the 221 revs harder than the 250, a guy I knew ran a sports sedan with a turbo 221 Xflow due to this! Hi folks; I have a idea, the cranks are not able to be swapped. Years ago i swapped a crank from a 302 CID over for a 351 crank. Gpas were nearly the same. I would get hold of a manual for both and check the specs. The stroke is what will cause you hassles and such. I really think the swap over is not a great idea as you would i feel lose capacity. Although, some swap overs also need the rods and pins to do the job. Best to check out the manuals and compare the 2 engines. I think the ford site has a good few details on what you want to do. Good luck Peter |
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