As previousely stated, you may be able to measure your pistons & find suitable replacements, .... However; the biggist obstical may be the piston boss where the pistin pin seats. I read that the 702 piston receives a larger piston pin than a 351 6 cylinder engine. This translates into; Finding a piston suitable may not be difficult provided that the replacement piston's boss area can be safely bored out to receive the old larger piston pin. My guess is that finding a piston w/ enough meat in the boss area to bore it & still have enough metal in the boss area to run the engine safely is probably unlikely. If you find you're nailed to the gun in this situation, you may be able to improvise by installing brass bushings in the top of the connecting rods, then bore & hone them to accept the smaller piston pins. pressing brass bushings in the top of connecting rods is easy & only requires threaded rod, 2 sockets & washers to make a tool to install/ remove them. The "new brass bushings" may need holes drilled in them to accomidate any oil passage that may needed to lube the piston pin.
Does anyone know how much larger piston bosses on the 702 are, than bosses on the 351?
