This conversion will radically improve the stock 12-bolt's strength and axle retention when combined with a stronger Moser aftermarket axle. Now that Moser has pumped a bunch of strength into our 12-bolt, it's time to hit the track and start abusing our Chevelle all over again. Our pal Tim Moore used his T&D Machine ring-and-pinion set-up tool to accurately dial in our 12-bolt with the proper pinion depth and backlash for the 3.42 gear.Our pal Tim Moore used his T&D Machine ring-and-pinion set-up tool to accurately dial in o Once Tim had installed the ring-and-pinion centersection, we installed a set of Baer rear caliper mounts for the disc brakes, slid the Moser axles in place, buttoned it all up, and were ready to go. Moser recommends breaking the new gears in with 50 to 100 miles of easy driving before subjecting the rear to performance use on the dragstrip or the road course.Once Tim had installed the ring-and-pinion centersection, we installed a set of Baer rear Parts List Component Company PN Housing ends, 9-inch Moser 7900 Axles, 30-spline Moser call 3.08 gear Moser 12B308 3.42 gear Moser 12B342 3.73 gear Moser 12B373 3.73 gear, 4-series carrier Moser 12B373-4 4.10 gear, 4-series carrier Moser 12B411 4.10 gear, 3-series carrier Moser 12B411X Truetrac, 30 spline, 3-series Tractech 913A555 Truetrac, 33 spline, 3-series Tractech 914A564PA Truetrac, 33 spline, 4-series Tractech 914A575PA Complete install kit Ratech 315K Solid pinion spacer kit Ratech 4101 Clutch disc adj. pack Ratech 1801 Pinion gear washers Ratech 2803 Pinion shaft Ratech 5805 Pinion shaft bolt Ratech 5812 SOURCES Moser Engineering 2-60/-726-6689 moserengineering.com Sutton Engineering 6-26/-961-9369 Ratech 11110 Adwood Dr. Cincinnati OH 45240 5-13/-742-2111 Tractech Inc. 11445 Stephens Dr. P.O. Box 882 Warren MI 48090 www.tractech.com « | 1 | 2 | View Full Article By Jeff Smith Enjoyed this Post? Subscribe to our RSS Feed, or use your favorite social media to recommend us to friends and colleagues!