Hi everyone,

Just joined the forum, thanks for having me.

I am replacing my chevy with an 81 f350 dump, 5 speed with a 351, W I assume.

Truthfully I would not have bought it, but it is pretty good shape for an 81, and looks better than some 97+ chevy dumps I have seen around.

The owner said he just paid to have a new clutch put it, and now it knocks.

I was figuring it was a flywheel/clutch problem, and the mechanic botched it.
I think it is a main knock though, the pully seems to wobble a lot, and the knock just sounds like a crank problem cause its like a symphony of clams. I know what a rod knock sounds like from blowing up too many motorcycle engines..

I figured I could find a used 351 for $200 somewhere.

But I wanted to see what would be the best replacement, another 351 from any ford truck? or a 460 or something?

Any advice would be appreciated.

I plan on running this block until it craps the bed, maybe it will last a year, you never know.

Keep in mind im a complete noob to Fords, and I would never touch any Ford newer than the 80's.

I hate buying special tools for one car, and ford seems to love that game.

Thanks