340 in a 65 plymouth valiant

Absolutely, with a few mods and driveline upgrades. Extent of mods will depend on if you are starting with a V8 or /6 car and if it has auto or manual trans. Choice of headers are fenderwell by hooker & others or non fenderwell's offered by TTI or Doug Thorley. Can also use spitfire headers if you can get em. Here are couple pics of friends 64 valiant work in progress with 340 4 speed swap.

Oldschoolcuda