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1981 Jeep CJ-8 - 2005 Top Truck Challenge

Posted in Top Truck Challenge: 2005 on November 1, 2005
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Contributors: Ken Brubaker
Photographers: Ken Brubaker

Click here for a feature story on Jerry Duffy's winning rig Scrambled.

The pride and joy of Jerry Duffy of Twin Falls, Idaho, is his 1981 CJ-8, "Scrambled." Jerry says he built this super-clean rig around the motor, and with Scrambled at the ready he is prepared to take on any challenge that TTC might present.

One look at this CJ-8 and you know it was built with a mission in mind -- to wheel anywhere, anytime. This serious Jeep isn't unlike a battleship in color, and is surely built just as stout. Replacing 16-inch guns and armor plating are bulletproof Dynatrac 60 axles and heavy-duty rock protection. Jerry's truck also has a dose of luxury, because no one ever said 'wheeling has to be uncomfortable.

Open up the hood and you'll see a beautiful Chevrolet ZZ 502ci V-8, which has been massaged with a torquier camshaft and Chevy TPI fuel injection. Block-hugger headers allow the mill to slot into the Jeep's engine room. Jerry estimates 400 hp and says 600 lb-ft of rock-churning torque are available just off idle.

The front suspension uses a triangulated three-link with Currie Johnny Joints, King coilovers, and Eibach springs. Steering this ship is made a lot easier with the addition of an AGR Rock Ram and a Dodge pitman arm. This Dana 60 is armed with an ARB Air Locker.

Also packing an ARB Air Locker, the rear Dynatrac 60 articulates via a triangulated four-link with Alcan elliptical springs controlled by King shocks. And how about that rear steer?


Jerry Duffy/ Twin Falls, Idaho
Vehicle model:
1981 {{{Jeep CJ}}}-8
What he does when not 'wheeling:
Chevrolet ZZ 502ci V-8/
TPI injection, torquier cam, block-hugger headers, Ron Davis radiator
GM 4L80-E with Art Carr shifter, {{{Flex}}}-a-lite cooler
Transfer case(s):
Atlas II 3.8
Suspension (f/r):
Three-link with Currie Johnny Joints, King coilovers, Eibach springs/
four-link, Alcan springs, King shocks
Axles (f/r):
Dynatrac 60, ARB Air Locker, AGR Rock Ram/Dynatrac 60, ARB Air Locker
Axle ratio:
Champion 15-inch aluminum wheels with bead locks
44x15-C Interco Super Swampers

Click here for a feature story on Jerry Duffy's winning rig Scrambled.

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