The year 2007 was marked as the 50th anniversary of a motor that not only revolutionized the drag racing…
…but the whole auto industry as well:
The legendary 392 HEMI®.
Just bring up the word “HEMI” to any automotive enthusiast and little else needs to be said.
Or, maybe much more has to be said depending on your perspective.
1. History Of The 392 HEMI
The original 392 HEMI engine was introduced in the new 1957 model year Chryslers and Imperials…
…when it replaced the 354 cubic-inch version of the original HEMI that was launched in 1951.
When compared with the 354, for the 392 we can say that it was completely improved and revised, having a larger valves and ports, improved bearings and a beefier block and crankshaft.
In short, the 392 HEMI, often referred to simply as the “92,” was perfect for drag racing.
More than a couple of racers bolted upon six or eight carburetors, slipped in a hotter cam, tipped some nitro into the tank and decided to go racing.
Racing legend Don Garlits ran a 392 in his Swamp Rat I at record speed of over 180 mph on nitro using no supercharger.
Garlits also used a 392 HEMI to officially break the 200-mph barrier when his Swamp Rat went 201.34 mph at Atco, N.J. in 1964.
2. 2007 Dodge Challenger 392 HEMI Super Stock Concept By Mopar
For further commemoration of the 392 legacy, Chrysler Group and Mopar unveiled:
concept car tricked out just for SEMA.
From Detroit’s 2006 North American International Auto Show and a year before its production debut…
…the stunning 2007 Dodge Challenger 392 HEMI Super Stock by Mopar.
One of the most iconic muscle cars of the period of the 1970s, was first shown in the fall of 1969 as a 1970 model.
Despite the fact that it was only produced from the 1970-1974 period (188,600 sold), the Dodge Challenger acquired a reputation as one of the most desirable of the original “pony cars,” with meticulously restored and rare examples which today are sold for six-figure prices.
The Challenger walked into the racing in its first year and HEMI-powered Challengers tore up the drag strips across the country in the SCCA Trans-am series and NHRA Pro Stock classes.
In 1971, a Dodge Challenger moved into the Indianapolis 500.
“The HEMI legacy lives on,” said Cortez. “But this Dodge Challenger Super Stock concept will no doubt bring that legacy to a whole new generation.”
The 2007 Dodge Challenger 392 HEMI got its debut as a 2008 model in calendar-year 2008.
3. HEMI 392 Technical Specifications
To help celebrate the 50th anniversary of the legendary engine, Mopar launched an all-new 392 HEMI crate motor for a new generation of performance fans and enthusiasts.
This motor that was built with all new components was a complete motor assembly from the throttle body to the oil pan, and was able to offer 525 horsepower in it’s most potent form.
Three Different Versions Of The New 392 Are Available From Mopar:
- P5153604 392 HEMI Crate Engine – Carbureted, 540 horsepower and 490 lb.-ft of torque
- P5253605 392 HEMI Crate Engine – SEFI, 525 horsepower and 510 lb.-ft. of torque
- P5153603 392 HEMI Long Block HEMI Crate Engine
Technical Specifications Include:
- Deep-skirted cast iron block with cross-bolted mains
- CNC-ported aluminum twin-plug cylinder heads
- Stainless steel 2.100″ intake and 1.600″ exhaust valves
- Ovate wire (beehive competition) valve springs
- Viton competition valve stem seals
- 279°/285° hydraulic roller camshaft with 0.584″ intake and 0.552″ exhaust lift
- Forged pistons (4.055″ bore)
- 10.5:1 compression ratio
- Aluminum single plane high rise intake manifold with holley 870 cfm 4-bbl carburetor for carbureted 392 applications (1)
- 4140 forged steel crankshaft – 3.795″ stroke
- 4130 forged- steel I-beam performance connecting rods – 6.200″ length
- SFI-approved competition crankshaft damper
- “Plug-and-Play” wiring harnesses (2)
- 80 mm manual throttle body on fuel-injected engines (3)
- Premium tri-metal performance engine bearings
- Precision balanced rotating assembly
- Distributorless coil-on-plug (COP) ignition system