Cast vs. forged crank differences on a Gen V 454
 

Is it safe to say that all Gen V 454’s had cast cranks? My boat is a 92 model with the aluminum valve covers, but the engine had been changed out by the previous owner. He told me the replacement engine came out of a one ton truck. It’s a four bolt main, was .030” over when I got it, and there’s no provision for the fuel pump. It also has a one piece rear main seal

Any possibility that it has a forged crank, or were all the Gen V’s cast cranks?

I have one here I am working on out of a 99 3500 truck and it is cast. Cant say I have ever seen a steel one out of a 454 but I have not seen that many of them in here. I have a 454 Mag MPI here too but have not started taking it apart yet.

does it have 7.4 cast in the block ?

No way to tell what crank is in it. If it was a Merc mag engine, it would be forged. If it was a non mag engine, then it would be cast.

I honestly don’t recall. I have it out of the boat, and the block is at the machine shop. I could probably just ask him; I’m sure he’ll be able to tell me.

Geeze, if the engine is in pieces all you have to do is look at the crank to tell if it is cast or forged.

look at the parting lines - Cast is a very definite thin line...

If the engine is tore down, you could have googled the cast in part number

all you have to do is look at the crank to see if its cast or steel

Duh!!! I posted before he said it was apart at a machine shop and I didn't have my Xray vision glasses on :lolhit: