West Coast Differentials Vehicles

2012 Jeep Wrangler Rubicon Unlimited

Our 2012 Jeep JK features a 3″ Teraflex suspension with a full set of adjustable control arms, Hanson Offroad bumpers front and rear, a Warn 9.5 cti winch and 35″ BFGoodrich KM2 tires. We installed a set of Spidertrax 1.5″ wheel spacers, allowing us to use the factory Rubicon wheels without any clearance issues. The result is an extremely comfortable vehicle that performs wery well both on road and off. The new 3.8L Pentastar V6 produces  285 HP and 260 ft/lbs of torque. Coupled with a 5-speed automatic transmission, the new powertrain is a substantial improvement over the 2011 and earlier models.

 

---

Erik’s 1969 Camaro

Erik Jorgensen has done differential work for Ring and Pinion Service since 1993. He built this ’69 Camaro over a two and a half year period and finished in 2004. Erik found the body in Turlock, CA, and got the frame from someone else in Reno. He parted out another Camaro to come up with the ’95 Corvette LT1 motor and a 6 speed manual tranny. The rear end is a 12 Bolt with an Eaton posi and 4.56 gears. The interior is mostly original with aftermarket seats. And in case you are wondering, the paint is Dodge Viper Red.

 

---

Bill’s Competition Rig

Bill Rowlette runs a custom tube frame rig in the Cal Rocks events. Sierra Gear is one of his major sponsors. He took the 36-40 Full Body Class championship in 2010. This rig has a LQ9 6 liter motor with an automatic Turbo 350 transmission, and an Atlas II transfer case. He’s running front and rear high pinion Dana 60’s, with ARB Air Lockers and 4.88 gears. Bill is the owner of Welder Bill’T in Placerville and built this rig himself.

 

---

1987 Military Hummer

We returned from Moab a few years ago wanting something different in a trail rig. We bought a military surplus Hummer that isn’t the most radical rig on the trail but it does get attention. We removed the rear helical differential and replaced it with an ARB. The front still has the stock helical diff that adds some traction but we’ll probably put a locker in the front before our next trip to Moab. The hummer has lots of low end torque from the 6.2 diesel and it’ll climb almost anything, so it’s great for Moab. It’s big and wide and doesn’t flex much, so it’s not the best rig for most of the Sierra trails.

We couldn’t resist the temptation to crawl this VW after all the good stuff had been removed for a sand rail. After several approaches to squash a good path, we made it up. Getting up took about 10-15 minutes but getting down off of bent sheet metal took far longer.

 

---

The Predator Cruiser

West Coast Differentials sponsors Mike Cunningham from Predator Off Road in his pro-modified “Cruiser” for Cal-Rocs and RCAA competition events. There’s not much Landcruiser left in this rig. It sports Dana 60 axles with Detroit Lockers, rear steer, hydraulic suspension, chrome-moly shafts and CTM U-joints. The cruiser will climb anything. You can see it below trying to make the Waterfall on Poison Spider Mesa seem difficult.