While offering nearly similar V8 engines on paper, the Mopar 383 V8 offered a larger bore and stroke that boosted horsepower on many muscle cars.

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!

Much like the GTX, the Road Runner was restricted to big-block V8 engines. However, it featured a 383-cubic-inch (6. ... units built in 1970. This Mopar packs a 440-cubic-inch V8 of the Six-Barrel ...

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.