The aftermost time Jeep shoehorned a V-8 beneath the awning of its iconic mil-spec Rubicon-runner, it was AMC’s wheezing small-block 304-cubic-inch agglomeration that struggled to aftermath 150 application and 245 lb-ft of torque in 1972, numbers afraid bottomward to 125 and 220 by the time the agent was retired in 1981. But barter accept clamored for such a Jeep with a V-8 anytime since, creating a cottage industry of engine-swap kits, primarily to jam GM LS or FCA Hemi V-8s beneath the awning of any CJ or Wrangler YJ/TJ/JK/JL congenital aback Ronald Reagan became president. Now it appears our continued delay for a branch Jeep Wrangler V-8 will accept been account it. Presaged by a abstraction version we collection beforehand this year, the 2021 Jeep Wrangler Rubicon 392 is here.
Wrangler 392: Powerful and Quick
Jeep absitively to go with its bigger artlessly aspirated Hemi, the 6.4-liter that pulls SRT assignment throughout the FCA lineup. In this accession it makes a nice balanced 470 application and 470 lb-ft of torque. Teamed with the accepted paddle-shifted eight-speed automated in a four-door Rubicon, it’s said to bear a 4.5-second run to 60 mph and a 13.0-second amble through the quarter-mile. Top acceleration is tire-limited to 99 mph. It apparently goes after adage that this achievement will cautiously concealment that of any 310-hp/400-lb-ft 2.7-liter twin-turbo V-6-powered Ford Bronco, but bethink that a Bronco Raptor/Warthog is in the works.
That achievement is bottomward a skosh from the 485 horses and 475 lb-ft the aforementioned agent makes in the Challenger and Charger SRT 392 models, and it’s bristles application shy of the Durango SRT 392. Blame tighter agent alcove packaging and the different operating distance a Wrangler faces—like deep-water fording, operating at acute angles, boundless dust exposure, etc. Instead, be blessed the ratings are up from the 450 quoted for the abstraction vehicle. As in best SRT 392 fitments, the agent boasts an alive assimilation manifold, capricious cam timing, two atom plugs per cylinder, sodium-filled bankrupt valves and alveolate assimilation valves, and piston-oil-cooling squirters.
Unlike in the car applications, it additionally gets a rear-sump oil pan and a high-mounted alternator, and to ensure it can ford 32.5 inches of baptize and survive a bow deathwatch sending 15 gallons per minute over the hood, there’s a circuitous tri-level Hydro-Guide assimilation system. The assorted airway paths additionally ensure the 392 can actually breathe alike if the awning beat is actually blocked by mud and gunk. And the free-flowing bankrupt includes a bypass valve (it can be actuated via a button) that permits for quiet canoeing or catlike late-night tiptoeing through the neighborhood, and affluence of absonant V-8 music aback you’re accessible to appearance off.
Note that the 392 boasts added whoa to bout the added go, with beyond vented (13.8 x 0.9-inch against 13.4 x 0.6-inch solid units) rear rotors clamped by beyond single-piston calipers (2.0- against 1.9-inch diameter).
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Why the 6.4 Instead of the 5.7 or Hellcat?
Packaging the 6.4 was no added difficult than the 5.7, and Jeep can allegation added for a 470-hp agent than it can for a 360-hp one. Finding allowance for the Hellcat’s supercharger and intercoolers airish cogent packaging challenges that threatened off-roading adequacy and acceptable would accept priced the Jeep Wrangler V-8 into alcove volumes that wouldn’t absolve the development costs. (Of course, the SRT association never say never.) Don’t apprehend Jeep to acquisition allowance for the E-Torque mild-hybrid accessory any time anon either. For now, we’ll aloof anticipate of the Rubicon 392 as the Wrangler Heckcat.
The 392 advantage will alone be offered on the Wrangler Unlimited Rubicon and alone with the ZF eight-speed automatic, admitting it can be had with any of that model’s three alternative roof setups. That’s aloof an abominable lot of ability and torque to address via the two-door’s 96.8-inch wheelbase. The added 21.6-inch bulk amid axles bigger prepares the four-door to handle the 65-to-81-percent ability access and 6-to-81-percent accession in torque about to every added accessible Wrangler engine. Accepted accessories includes a hardly retuned MP3022 Selec-Trac two-speed alteration case with a 2.72:1 low ambit and a 3.73:1 arbor arrangement in a baby acknowledgment to ammunition efficiency. (RVers booty note: That the Selec-Trac case agency you can flat-tow the 392.) The 4.10:1 arbor gearing is not bare with all this added torque. The Rubicon 392’s 48:1 all-embracing clamber arrangement will bear added than abundant torque multiplication for this agent to booty your Wrangler up and over whatever it is you’re attractive to climb. Oh, and for the moment there’s no plan to extend the 392 agent alms to the Gladiator.
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Alike Added Rubicon Accessible
The 2021 Jeep Wrangler Rubicon 392’s anatomy is adapted with a new advanced crossmember to board the 6.4-liter’s revised oil pan. The cooling bore additionally had to be confused forward 0.8 inch to bright the best engine. It shares best of the aforementioned accessory its bottom 2.0-liter turbo, 3.0-liter turbodiesel V-6, and 3.6-liter V-6 aggregation get: Tru-Lok electronically locking Dana 44 axles, a disconnecting advanced anti-roll bar, and accepted 33-inch tires on 7.5 x 17-inch beadlock-ready wheels. To ensure able arena approval for the taller engine, the ride acme is hiked up an added inch aloft that of added Rubicons (so 2.0 inches college than a accepted Wrangler), while added changes accommodate new high ascendancy accoutrements and cast-iron council knuckles. This improves arena approval to 10.3 inches, and the approach, access breakover, and abandonment angles to 44.5, 22.6 and 37.5 degrees. Jeep says it additionally provides best-in-class arbor articulation. The rear balance bar is a bit stiffer, the advanced and rear springs are adapted to cope with the added engine, the geometry is adapted to clothing the new ride height, and the Rubicon 392 gets aluminum monotube Fox shocks. Add in the actuality that 75 percent of aiguille torque is accessible aloof off idle, and the Rubicon 392 has the balance and adequacy to slow-crawl up the toughest obstacles.
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Clue and Towing Activated
In accession to all the off-road testing that every Wrangler endures, this one spent an disproportionate bulk of time testing on annoyance strips. The SRT aggregation aided in the development process, programming the powertrain ambassador with its Torque Reserve agent strategy, which optimizes ammunition breeze and atom timing for the absolute brake-torque launch, while the manual programming coordinates torque breeze during accouterment for aiguille performance. These programming tricks are all adopted from the Grand Cherokee Trackhawk. Note that no ambit testing was done, because any changes SRT ability accept appropriate to advance cornering or clue administration would actually accept compromised the Wrangler 392’s off-road capability, which was unthinkable. The agent was abundantly activated at Davis Dam, too, area it accepted calmly able to arise the brand with a 3,500-pound bivouac in tow at the acquaint acceleration limit. Payload is rated at 1,000 pounds.
How to Spot a Wrangler Rubicon 392
In accession to the accessible tells—the Rubicon 392 badging—look for the Gladiator’s freer-flowing grille, the Gladiator Mojave’s awning with anatomic cold-air intake, and the characteristic cloister bankrupt outlets in back. Additionally attending for brownish accents analogue the badges and decals, the tow hooks, and the Fox Shocks. Alike the auto get in on the bronzing. Inside there’s a competition-style fat-rimmed council caster and addition Wrangler first: aluminum steering-wheel-mounted about-face paddles. Added spiffs accommodate accepted covering with added brownish in the bond and “Rubicon 392” embroidery, additional an 8.4-inch Uconnect awning featuring off-road pages to adviser pitch, roll, altitude, GPS coordinates, drivetrain ability distribution, and more. New half-doors are accessible to heighten the amphitheater feeling, and they can be branch ordered forth with the accepted doors.
How Abundant Will the Wrangler Rubicon 392 Cost?
Official appraisement and ammunition abridgement abstracts won’t be appear until afterpiece to launch, which is appointed for the aboriginal division of 2021, but we do apperceive that a Rubicon Unlimited able to the aforementioned akin as the Rubicon 392 would amount $60,255. The 392 packs covering upholstery, the 8.4-inch exceptional audio group, the body-color adamantine top and fender flares, animate bumpers, alien adjacency entry, two assurance packages, and the LED lighting and cold-weather accumulation options as accepted equipment. To get to an estimated MSRP for the Wrangler Rubicon 392, we could add the almost $11,000 basin amid Dodge’s Durango SRT 392 and a analogously able 3.6-liter Durango 4 GT or the $4,000 amid a 6.4-liter Challenger R/T Scat Pack over an contrarily agnate GT 3.6. (The $13,450 aberration amid a Grand Cherokee Summit 3.6 and an SRT 392 covers a lot of items the Wrangler doesn’t get, like adaptive suspension.) So let’s peg the amount about in the average of the Dodge appraisement and alarm it $67,000.
If that’s the appropriate ballpark, you’d absolutely absorb at atomic that abundant advantageous some aftermarket accouterments to jam a agnate agent into a loaded Wrangler Rubicon, and alike again you may accept connected worries a blemish in their accomplishment would acknowledge itself at the top of Hell’s Steps. To that we say, “heck, no.” But to this factory-warrantied V-8 Heckcat Wrangler? Heck, yeah.