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1985 GM M1008 - GI Gyp: Part 5

Posted in Project Vehicles on March 24, 2014
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Of course, no 4x4 project is ever really done. Nothing could be more true of our ’85 ex-military M1008 CUCV. Considering our drive-by-Braille driving style, there will always be something that can be repaired or upgraded. Last installment, we beefed up and improved the steering system to help turn the 18/39.5-15 Interco Super Swamper Boggers mounted on 15x12 Eaton beadlocks from National Tire & Wheel. This time around we’re getting the four-wheel-drive to work as well as increasing traction, performance, and adding a little protection where it’s needed. We’re ready to hit the trail, but we still have some more tricks up our sleeves, so keep an eye out for future updates of our M1008.

We wanted to give our stock TH400 automatic transmission a few upgrades specifically for wheeling, so we made a call to TCI for a full manual reverse valve body kit with engine braking (PN 221201), deep aluminum oil pan (PN 228000), and some fresh TCI oil. A full manual reverse valve body isn’t for everyone because it essentially makes your automatic transmission a manual tranny, minus the foot-operated clutch of course. If you shift it into a gear, it stays there, no matter what. Another advantage is that you can easily toggle the shifter from First gear to Reverse when backing down a hill because the shift pattern is flipped. The TCI kit requires that the transmission be removed and partially disassembled, so it’s a good idea to do a full tranny cleaning and rebuild at the time of installation.
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Appleton, WI 54912
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Ashland, MS 38603
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Poly Performance
San Luis Obispo, CA 93401
McMaster Carr
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