The old engine is out, and the Hemi is in. With the heavy-lifting handled, the real work for this engine swap begins.

One of the many value-added improvements JASPER made was redesigning the piston. Along with graphite-coated skirts to prevent piston scuffing, and dry start up, these JASPER redesigned pistons offer ...

Although the famous HEMI V8 engine is slowly getting phased out of the Stellantis lineup, the two most recently offered variations were the 5.7-liter HEMI and the 392 HEMI. The 5.7-liter V8 is ...

Big tires on Jeeps often equal a lack of power to the ground. Superchargers can help, but they aren’t a true replacement for displacement. Chevy V-8 swaps into Jeeps are fairly refined, particularly ...

In June 2014, we published the account of how we became aware of a defect with FCA's (now Stellantis) 5.7-liter Hemi engine. Specifically, it concerned 5.7L Hemis installed in Dodge Chargers and ...

Our beloved Teal-J Jeep has seen her share of modifications over the years, and one area where we never seemed to get enough performance was the stock 4.0L six. Its factory-rated 181 hp at 4,600 rpm ...

Now that the Ford Bronco reveal is just a few hours away – the official one, that is, because leaks are already popping up – we all but forgot that Jeep is still around. The nameplate that cemented ...