I have a 1980 F350 Dump Truck, the motor is a 351/400M motor and it is tired and last week blew a head gasket. I an not sure what to do, rebuild the current motor, replace it(?) or perform a swap 460 or 351W. Does anybody know what is involved in the swap, I know a 460 will bolt up to my bellhousing, not sure about the frame mounts. I know they changed over to the 351W in either 82 or 83. If I coulf find a resonable 351/400M rebuilt motor, I wold probly just buy it and keep on going!

Wayne

 

There are lots of LTD's and 70's cars sitting around with 351m's and 400's in them. Also all the 70's 4x4's seemed to have these motors in them. You might also try www.car-part.com and see if a local junkyard has one you can buy.