i've got a '37 plymouth sedan with a stock (but non-original) 23" flathead that i ruined a couple years ago. i've had a constant struggle since then deciding what i should do for a replacement.
option 1) the guy who sold me the car has a small block 360 from a late 60's dodge truck that he was going to put in it. he says it has j-heads, but i don't know how to externally tell the difference. it needs the typical tuneup parts, as well as an alternator, fuel pump, headers/manifolds, crank pulley, and a carb (comes with a 2bbl and a 4bbl offy intake, and i already have a 4bbl carb that needs rebuilding). the motor does turn and he's got the original motor mounts. he wants $300; but is willing to let me work it off. he has already given me the original-mating 4spd NB435 tranny, an additional NB435 tranny, and a '73 challenger rear end (7:28? it's tagged 2.76) free of charge. the rear end does need all the brake components. he says he chose that particular setup because it wouldn't take much modification to make it work; i.e. still use the stock front end, radiator, driveshaft, little to no steering box issues. he has even offered to help me put it in out of the goodness of his heart.
in my research in this forum over the past several hours, i've seen a few mentions of 318s and a couple folks who actually did it. one post has jonnyz72 who says the original front end, rear end, and radiator were still used with his 318 for daily driver use. if i went the 360 route, i would eventually want to put discs in the front. i'm still unclear if the radiator would be sufficient. i know a 12v conversion would be necessary, but i'm not worried about that. pictures or videos of the work of this conversion would be great. option 2) i've recently found a '46 fargo dodge truck engine (25"). this engine also turns and appears in decent shape. there has been confusion whether it's a 238 or a 218... i'm inclined towards a 218 because i've never heard of a 238. the owner is willing to work out a trade with me for some stuff i don't need anymore. there is a bellhousing, but no transmission. i've heard that all one would need to do is move the mounts on the top of the radiator to push it forward. in a mock radiator setup, this appears to give me the clearance i need for the fan, but also blocks access to the filler cap. i see don coatney has done the conversion quite nicely, but he has a later plymouth that's not so narrow in the nose. whether or not i go with this option, i would also love to see pictures or videos of how people make this mod work. option 3) i also found a rusty/stuck engine/trans from a '39-'40 dodge truck... more or less for best offer. i'm not sure what size the block is, but even though it's cheap, i don't have money to throw into a heavy piece of scrap. i already have one in my plymouth.
actually coming up with a free-turning 23" 218 or 230 that's within my financial means is proving near impossible. this said, i don't have money or space to work on this project at the moment; but warmer weather and fulltime employment would greatly help me out. at this point, i'm just trying to figure out what i can do. if i can come up with a plan and score one of these engines for little or no cash, i would feel a lot more comfortable about where i'm going with this project. i was hardly able to work in the garage at all last summer, so i've got garage fever pretty bad!
oh, i suppose i should mention that my goal is to get my car to be a daily driver... if i want it to be. kinda rat roddy, kinda street roddy. i want to go to shows, cruise long distances... just enjoy driving it. and yes, i'd like to be able to go fast if i wanted to, too. i think the 360 would be my preferred route, but if i could get more of a "drop-in" engine, i could drive it while working on the 360. if i'm going to be spending practically just as much time and money with one as i would the other, i'll do the 360. i also have no experience swapping engines, so if 360 guy is willing to help me, i've got that going for me too. i plan on going to the junkyard for most of the parts i need.