The stock #906 heads were milled .020-inches to compensate for the thicker replacement head gasket, thereby reducing chamber volume from the stock 87 cc to 83 cc. The deep valve notches in the KB ...

Last month we bolted together a 383, built as true to original 383 Magnum/Commando specs as practical. Inside, our 383 benefited from Jim Grubbs' blueprint-quality machining, moly rings for increased ...

In the late 1950s, Chrysler decided to cease production on its FirePower V8 engines. These were massive, hemispherical engines that would be revived in the mid-1960s and be rebranded to what we now ...

Straight off the bat, it's the engine sizes. The Mopar 383 V8 displaces 383 cubic inches (6.3 liters), sitting between the 340 (5.6 liters) and 440 (7.2 liters). The 340, 383, and 440 all are part of ...

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. To make this a fair test, we ...