I have a buddy that has 5.0 stang. He getting 351w crank machined to fit into the 302 and he has ARP pistons 30 over. He would like to know what size rods that he would have to good. I've done search and tried to find any info and haven't been able to find anything. Would he just use the stock 351w rods or would that throw off the stroke?
I heard somewhere that a 351 crank won't fit a 302 block, the larger counterweights hit the block. Never tried it myself, though. ARP pistons?
what is the compression height on his pistons without knowing that theres really no way of telling what rods he would need but rough guess if he would go with a 347 piston and one of the old trans am rods it should be close. But he would still have a sucky compression. That would put the piston about .050 in the hole
Main question is, why would you even do it? You can buy a new stroker crank for less than what the machine work would cost. Plus a 5.0 is 50 oz. imbalance, a 351 is 28 oz. imbalance, would need a new flywheel, damper and/or a ton of balancing done to it ($$$$).
hense the 347 comment but to each his own. I actually helped a gut put a long rod motor together and it used chevy pistons and rods. You could get a cheap stroker crank for 200 or 300 bucks ready to bolt in
It's possible to do it with a cleveland crank, but not a windsor. If you look carefully at the oil holes at the mains on a W crank, you'll notice that they're angled toward the rod journals. After you grind nearly .900" off of the mains, the oil holes will no longer be on the main journals...well, they will, but they "move". There is a guy we race with that uses a Cleveland crank in his. Said it wasn't worth the time/money.
If he did get it in there, the pistons and/or rods would have to be too short for safety and durability. Another 'not worth the headache' vote here. Dave
Ask him why he does not research these things and find out what is done to accomplish an increase in displacement from the 5L block? You just don't throw parts into a block that way. The rod used determines the piston to use plus compression ratio has to be figured in and other considerations. The 331 stroker is the largest you can go without grinding clearence into the block for the crank and rods.
