Will a 77 Charger 360 fit in a 65 Valiant Slant Six Painlessly?
^^^ exhaust is the probably the most expensive and difficult part of the whole gambit.
track down early A V8 pieces, track down 340 pieces and cobble together head pipes, early magnum on the pass side and [question mark] on the driver's side and figure out from there, TTI, dougs, sanderson if you have an automatic; fenderwells if you want to cut. modify the x-member if you want true duals.
might need to beat the seam in the firewall flat to fit the trans.
you'll need to track down a V8 center link.
oil pan from B may or may not work.
early K's are the same 8 or 6 so you could hustle up some stock mounts in lieu of conversion mounts.
figure out trans linkage & kick down, if you have rod style throttle you'll need to scare up a pedal assembly.
If the Charger trans is a 904, probably won't have to clearance the trans tunnel seam.
If I remember (???), the 65 center links are the same six or V8. Or is that 66 only??
Will almost surely need a bigger radiator. But the 65 opening is large enough to handle bigger, unlike the opening in my 63 Valiant, which never came with a V8. A radiator to fit a 71 Duster 340 will fit and will also have the lower hose outlet in the correct passenger side for a 77 360 (I ran one for a while in my 65 Barracuda).
A 64-66 V8 pedal assembly will fit and work perfectly, but might be hard to find these days. But a later A body swing pedal can easily be adapted to fit.
You'll need something stronger than the 7 1/4 rear behind that slant six. Used to be able to find inexpensive A body 8 3/4 rears in junk yards, but those days are gone. A body 8 1/4 will bolt in, but finding one with something other than 2.76 gears or worse is not so easy. There are other options, but none are strictly bolt in. And yes, your old driveshaft most likely won't fit, nor will the Charger shaft. But they can be shortened (or lengthened) or you can just have a new one made up.
Then there's the exhaust system, and the usual minor stuff - like engine compartment wiring length, etc.
It's certainly do-able; I don't know about painlessly. How mechanically skillful are you? This swap can be made to look like a factory install, but I've seen some cobbled-together hack jobs, too.
