PCM 454 casting numbers

Hello everyone,

I pulled the 454 out of my 82 BFN to put some new gaskets and seals in and would like to learn what there is to know from the casting numbers I have found:

PCM model #PRK WR R10 (I know the code breakdown)     Serial#1220192

Block # 14015445 Date code: E11 82
Heads # 353049   Date code: E11 82
Intake # 333841    Date code: C8 82

If I understand the date code correctly, it looks like all these components are from same year, 1982, which is what my Barefoot is as well. My engine was painted chevy orange by a previous owner and has no trace of PCM silver paint. It is counter rotation, but is it possible it may be an OMC or Mercruiser from a different boat? When I search for that intake casting #, Mercruiser keeps popping up. Does anyone else have this intake casting on a similar era BFN? It does have a PCM tag and PCM exhaust manifolds.

I was really expecting to find peanut port heads so I was surprised to see the larger port ovals. Or is this common? Both heads are stamped "PASS" but the date codes are the same. The block # seems to be typical of a marine application taken from a truck application. I haven't pulled the pan to see if 2 or 4 bolt.

What do you guys think? anything un-usual here?

Stu

TRBenj wrote: The 049 heads weren’t original, but an upgrade for sure. Sounds like the engine has been part (rebuilt?) based on paint and heads. Unlikely to be an OMC in 82, pics of the accessories, cooling system, etc. would confirm. Most likely PCM, not sure where else the ID tag would have come from. 14015445 seems to have been a common casting, I have had several. Allegedly available in 2-bolt and 4-bolt, but all of mine have been 4. Can’t help on the intake, as it’s a paper weight IMHO... but I’m betting it was a common item on the marine long blocks coming out of GM.

I was hoping you would have a reply Tim! Yes, the engine was rebuilt at some point in the past so I'm told. It is definitely marinized by PCM and has the correct accessories as well, I thought perhaps the base engine may have been originally marinized by a different outfit. Its odd to me that the heads and block have the same casting date although the heads should not be original. I've attached the date code pictures for block and heads

Duane in Indy wrote: If it is of any help to you I have the following intake on a shelf. Used condition. Low Rise Intake Manifold Big Block Chevy Oval Port Aluminum Intake Can send pics if there is any interest

PM sent

TRBenj wrote: The 049 heads weren’t original, but an upgrade for sure. Sounds like the engine has been part (rebuilt?) based on paint and heads. Unlikely to be an OMC in 82, pics of the accessories, cooling system, etc. would confirm. Most likely PCM, not sure where else the ID tag would have come from. 14015445 seems to have been a common casting, I have had several. Allegedly available in 2-bolt and 4-bolt, but all of mine have been 4. Can’t help on the intake, as it’s a paper weight IMHO... but I’m betting it was a common item on the marine long blocks coming out of GM.

On another note, I read and re-read your very old thread on hotrodders.com about your 454 findings. Who were you finally able to get a RR cam from? Also, did you do any further research on aluminum log manifolds? It seems as though the weight savings would be nice compared to the cast iron type but can they flow as well?

What are you looking for on the cam? I talked to Bob Medera recently and he is considering making up more roller blanks if there is enough interest.I have a Comp Cam replacement that's been sitting on the shelf for years. Nothing special I can text a spec sheet to you if you are interested. The heads are probably best flowing open chamber stock.

Duane in Indy wrote: If it is of any help to you I have the following intake on a shelf. Used condition. Low Rise Intake Manifold Big Block Chevy Oval Port Aluminum Intake Can send pics if there is any interest

Edelbrock Torker II 2-0

oldcuda wrote: What are you looking for on the cam? I talked to Bob Medera recently and he is considering making up more roller blanks if there is enough interest.I have a Comp Cam replacement that's been sitting on the shelf for years. Nothing special I can text a spec sheet to you if you are interested. The heads are probably best flowing open chamber stock.

PM sent