340 intake on a 273???

If someone can let me know where to look for the build date on the engine, we can see if it "really is a '64"... Am I reading these numbers right? Are there other clues printed on the engine that will reveal even MORE of the story? (If so, please let me know, I bought a can of degreaser just in case...)

I'm sure you have all seen more remarkable stuff, but does anyone think this could work??

My plan, unless someone tells me a better one, is to pull the intake and see how it's been jerry-rigged on, and if there's been significant damage to the intake as a result (can someone tell me what should I be looking for). Then I'll pull the heads and see what kind of shape they are in, maybe get them ported out and the valves hardened. If the intake hasn't been ruined (how would I know?) and the heads are good, maybe then I'll start thinking cams and pistons... Maybe frost plugs, what the hell are frost plugs?? is that even a real thing or are the voices in my head leading me astray again... Course I'll need to consider a carb (suggestions)... I've never done anything with engines (I did check the oil on my lawn mower once) Hell, I'm still trying to figure out how to get the engine out of the back of my pickup, guess it would be easier if I took it apart... (I actually know a guy with an engine lift, or I'll drive across the state, in the other direction, to harbor freight..)

I've only got $100 into this and can probably part it out and recoup most of that (I think -maybe), but regardless, I don't want to go overboard and throw good money after bad.

Please let me know if any of you have 'Frankenstein-ed' your rides in such a manner and how it worked out. One last picture, of what I suspect is the fuel pump - because, well why not...
View attachment 1715054717

Thanks I'm looking forward to your advice and comments FABO.

65Cudafix

To decode the engine markings, read here:

How to ID a Small Block Engine Block:


The 64-65 273 heads have smaller diameter intake bolts at a different angle from the standard 66-91 LA small blocks... They should have opened up/wallowed out the intake bolt holes to get the '340' intake to fit... Maybe consider swapping a set of 66-67 273/318 heads on it for the updated intake bolts which would allow more choice of intakes...

Frost plugs are aslo referred to as: freeze plugs, core plugs, they go in the block and heads. They rust out with age and would be a good idea to replace...