1965 Dodge Dart GT Question

A BB engine (383, 400) will barely fit, but isn't a trivial swap. You must get custom motor mounts, change the transmission, probably the drivetrain, and the rear end if you want it to last. I think you can only fit manual steering. Would likely want front disk brakes too. I don't know if an RB (413, 440) engine would fit. Check the Big Block forum, plus www.bigblockdart.com.

You can't use high flow headers w/ a BB, so people say you end up with the same or less performance than a SB w/ good headers. If you want to cruise and look nice, why not keep the 273? There are many $80K performance V-8 cars today with <4.5 L engines. Some guys here run a 1/4 mile as fast as a BB by building their slant six with a turbo. Sure is more clever. If driving the car, think of gas prices.