Omc 460 baby king 1988
model 754bprgdp. (Think this is correct)
Long story short had cracked block and messed up # 5 cylinder. Have a lead on 1982 460 out of a 1ton van. Anything I should be aware of for compatibility. If compression checks out. Will change out head gaskets and core plugs and bolt on all marine furniture.
Been there, done that! Although my 460 "died" from a flat camshaft.............
Since you probably have a good drive (which you can easily sell for good money) , this might be a great time to consider finding a Mercruiser or Volvo engine, transom-mount and drive from a "donor" boat and make the "big" switch.
Otherwise, the van/truck 460 will probably work ok. I will agree with Scott here though, you need to determine why you had a detonation event.
It can be due to low octane fuel and timing. I seem to remember the OMC manual specifying 8 BTDC if running "REG" and 10 if you could get "premium" If you were at 10 deg BTDC or more running some of the less than satisfactory fuel available today, you might have been on the cusp of detonation..........(or well into it)
Since the manifolds are a difficulty these days, (and if yours are "good") you can sell yours too! I got about $3600 selling all my OMG460 stuff over a 3 year period! and I still have the oil and fuel filter mounts and the Capts Call system I removed. The oil filter and fuel filter remote mount is going on my 1955 Ford F-600 project 292 Y-block. The Capts Call is stuff is going out the door!
Cheers,
Rick