460 or 429?
Freshman User
Joined: Jun 2000
Posts: 27
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460 or 429?
Yes the displacement is marked on most FACTORY pistons on the skirt side near the pin area.
Look at your crankshaft,the ID numbers(letters)will begin with the number 4 (i.e.,4U,4UA).Also look for a small counterweight CAST into the crankshaft on the front counterweight near the centerline facing the snout.The 429 numbers shoud start with the number 2(2Y,2YA,2YAB,2YABC).Happy motoring......Dave.
Look at your crankshaft,the ID numbers(letters)will begin with the number 4 (i.e.,4U,4UA).Also look for a small counterweight CAST into the crankshaft on the front counterweight near the centerline facing the snout.The 429 numbers shoud start with the number 2(2Y,2YA,2YAB,2YABC).Happy motoring......Dave.
Senior User
Joined: Nov 2000
Posts: 231
Likes: 2
460 or 429?
I agree with loosemoney on the pistons being stamped for a particular engine displacement, but the casting #'s aren't right. A 429 crank has #'s either 4U or 4UA and a 460's crank #'s could be 2Y,2YA,2YAB, or 2YABC then in '79 they went to externally balancing the 460 and so the crank was changed also it's casting # was 3Y. I hope this helps.
BB79RANCH
BB79RANCH
