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Missouri Stump Jumper

Posted in Project Vehicles on November 1, 2001
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p114590 large+1982 Chevrolet Silverado+Front Passenger Side View
Paul’s built 327ci engine is from a ’65 Corvette. It produces an estimated 350 horsepower and 350 lb-ft of torque, which is enough to allow Paul’s Bow Tie to jump just about any stump that gets in its way. Paul’s built 327ci engine is from a ’65 Corvette. It produces an estimated 350 horsepower and 350 lb-ft of torque, which is enough to allow Paul’s Bow Tie to jump just about any stump that gets in its way.
The interior is clean and functional   and features a bench with Simpson   5-point harnesses to keep driver and   passenger safe. The interior is clean and functional and features a bench with Simpson 5-point harnesses to keep driver and passenger safe.
The power from the Stump Jumper’s Corvette engine courses into a Detroit-locked front Dana 44 axle and a Corporate 12-bolt rear with an Auburn Pro-Series limited-slip. A 6-inch Skyjacker Softride suspension system gets the rig up in the air. The power from the Stump Jumper’s Corvette engine courses into a Detroit-locked front Dana 44 axle and a Corporate 12-bolt rear with an Auburn Pro-Series limited-slip. A 6-inch Skyjacker Softride suspension system gets the rig up in the air.
p114594 large+1982 Chevrolet Silverado+Rear Passenger Side View
Specs. Specs.

When we met Paul and Brandy Heisner at the Springfield Jambo, we found out why they named their rig the Missouri Stump Jumper. Paul explained cryptically, “We live on the edge of the Ozark Mountains and she ain’t no mule.”

At first we were a bit confused by that comment, but after a quick peek under the hood, we realized what Paul meant. What he meant was, horsepower is a lot better than mulepower.

When Paul purchased his rig in ’88, it was a beater that was powered by a tired 6.2L diesel engine. He drove the truck for a couple of years and in 1991 decided to do a frame-off restoration and engine swap. The existing mill was replaced with a 327ci V-8 from a ’65 Corvette. Paul’s new Vette motor features a multitude of modifications. For starters, the block was bored 0.020-inch over, and the completed assembly was balanced and blueprinted by B&M Machine Shop in Mount Vernon, Missouri. Chevy 202 heads cap the cylinders and achieve a 10.5:1 compression ratio with the help of TRW flat-top pistons and Erson valves. A Competition Cam lifts the valves, which deliver the air/fuel mixture fed through a Holley carb on an Edelbrock Performer intake manifold. Spark is provided by an ACCEL HEI Supercoil and ACCEL Blueprint distributor through Taylor wires and ACCEL plugs. Hooker ceramic-coated headers blow out the exhaust through 2½-inch aluminized pipes and dual Flowmaster mufflers.

All this power threads through a TH-350 transmission modified with B&M components including the flywheel and a torque converter with a 2,800-rpm stall-speed. A B&M shift kit provides positive ratio selection while a B&M cooler and Durall pan keep the internals from getting too hot. An NP208 transfer case caps the transmission and feeds a Dana 44 front axle and Corporate 12-bolt rear axle through custom driveshafts from Springfield Clutch and Driveline. The front features a Detroit Locker, while an Auburn limited-slip lives in the rear. Both axles house 4.56 gears and 30-spline axleshafts.Paul’s impressive Bow Tie is slung-upon a 6-inch Skyjacker Softride suspension system which is augmented by 10 Rancho RS 5000 shocks—six in the front and four out back. A Skyjacker drop pitman arm and dual Rancho steering stabilizers help keep the rig under control. Paul installed a custom 4-inch body lift, which helps clear 39.5x18-15 Super Swamper Boggers on 15x12 Weld forged aluminum wheels. He topped all this off with a Grizzly double/single rollbar, Smittybilt nerf bars, and a Grizzly brushguard to protect sheetmetal and paint. Interior modifications include Auto Meter gauges, a Sun Super Tach II, and a Kenwood KR 3004 stereo wired to Kenwood 6x9 and Rockford Fosgate 4x4 speakers.

For sure, that sound system supplies great tunes, but what Paul likes best of all is the music from his truck’s Corvette engine. And we can’t blame him.

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