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Engine/Performance

Mopar engine and performance questions submitted by our readers and answered by our technical editors.

Hemi Legacy: Mopar Monsters

Almost fifty years of development have made the Gen 2 Hemi the most powerful racing engine on the planet. By Paul Stenquist Photos by Chris Graves Regardless of what logos the body might wear, today’s 8,000 horsepower funny car

1971 Hemi Engine Detailing

Frank Badalson sets the bar in Hemi engine restoration. Here’s how he does it. By Cliff Gromer and Frank Badalson Photos by Cliff Gromer This overall view of the left side of the ’71 Hemi shows power steering high pressure hose

Mopar Monsters

Almost 50years of development have made the Gen 2 Hemi the most powerful racing engine on the planet. By Paul Stenquist Photos by Chris Graves Regardless of what logos the body might wear, today’s 8,000+ horsepower funny car

Bolt-On Hop-Ups

Adding significant HP for insignificant effort – and cash—in an afternoon. Instead of a Movie Dept Title: Bolt-On Hop-ups Blurb: Adding significant HP for insignificant effort – and cash—in an afternoon. Text and photos by

Hemi Hassle

Hemi Hassle Gino Faini, Framingham, MA, 1970 Plymouth Cuda 426 I have a 1966 426 Hemi engine in a 1970 'Cuda. The engine was just redone, new rings, bearings, guides, seals. My problem is, after a short time of driving the oil…

Blower

Blower Peter Black, Geelong, Australia, 1967 Dodge Coronet 440 500 Hi Rick, long-time reader & subscriber, big fan. I've had this 440 engine for about 15 years now. Bought it in 1000 pieces and rebuilt it as a fairly stock…

End Play

End Play Jayson Fleming, Roseville, MI, 1964 Dodge Dart GT 340 I recently removed this 340 due to lack of power. During inspecting I found the thrust face bearing was wiped out so bad that the crank could travel about .040-.050 end…