For example, a Mopar 440 engine was exclusively an RB ... Also, none of these three engines came from the same family. The 383 and 440 big-blocks are somewhat related, as the 383 is a B engine ...

where it had previously been available to most Mopar models. For Dodge, these cars were designated by the R/T suffix and usually had 383 as the base engine, with the 426 and 440 as options.

Walking around a 383-inch LS built from a 5.3L Vortec iron block and LS stroker kit 0:32 440-Inch Big-Block Pump-Gas Mopar Wedge Makes Over 500 HP And a Whole Lot of Torque!

383 Chevy vs. 383 Mopar! It’s our first head-to-head shootout with two engines: a Blueprint Engines crate Chevy 383 small-block versus a hand-built Mopar 383 by Engine Masters host Steve Dulcich.

such as the Mopar 440 and the 440 Magnum. The Magnum was able to increase the engine’s output to 375 hp and the same torque. Over time, Mopar increased those Magnum numbers even more to 390 hp ...