SCORE Journal - The Official Publication of SCORE Off-Road Racing
Issue link: http://read.uberflip.com/i/1430846
THE ULTIMATE PRE-RUNNER SCORE JOURNAL 80 While some of the information about the construction and details of the Menzies Pre-runner is proprietary, Stewart was willing to share with us many of the features included in this one-of-a-kind build. The two-wheel-drive truck is built on a TIG-welded chromoly tube chassis giving it a 134-inch wheelbase and a 90-inch track. It uses billet aluminum front A-arms and a four-link rear suspension yielding 26-inches of front suspension travel and 32-inches of rear travel. Stewart says the suspension tuning is a bit softer on this pre-runner than it would be for a full race truck, so it provides a slightly more comfortable ride while still being able to cover ground at near-race speeds. Fox Factory 3.0 coil-over and 4.4 bypass shocks with coolers are tuned by SDG and control body and wheel motions. Toyo Open Country 40-inch tires mounted on KMC Beadlock wheels on ProAm hubs connect the truck to the ground and Brembo disc brakes provide the stopping power. Horsepower is provided by a Dougan's Racing-built big block aluminum Chevy V8 engine putting out 725 horsepower and 685 lb/ft of torque. The engine uses a Dailey Dry Sump system for lubrication and a CBR radiator for cooling. Motec electronic fuel injection sends the pump gas into the engine, and Iconel headers by Artisan Fab smooth the exhaust stream to Flowmaster mufflers. An Xtrac sequential 6-speed transmission with steering-wheel-mounted paddle shifters selects the gears, and a Tubeworks differential routes the power to the rear wheels. BAJA DESIGNS LED'S ARE CAREFULLY PLACED FOR PROPER VEHICLE AESTHETICS, AS WELL AS FOR MAXIMUM VISIBILITY AT NIGHT