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This kit is for use with 1973-85 GM TH 350 4 wheel drive transmission and requires driveline modifications. Adapter thickness is 3.650. Kit includes new mainshaft and mounting hardware. Additional parts required: part #716021 transfer case mount for CJ or #716008 transfer case mount for YJ, #716010 vacuum modulator, #715523 transfer case shifter bracket and #G104 Chevy small block flexplate 283-350. Kit fits 1980-86 CJ Dana 300 transfer case and 1987-95 YJ New Process transfer case with 23 spline input shaft.
Advance Adapters got its start in Downey, California in 1971 with a single adapter mating a Muncie car 4-speed to a Jeep Dana 18 transfer case. Eventually headers, overdrives, motor mounts and linkage brackets were added to the offerings to complement their core adapter components. When interest in rock crawling spiked in the mid-1990s, Advance Adapters offered low ratio transmission swaps then switched gears into the ultra-low gear transfer case arena. Today, the company is based in Paso Robles, California and their engine and transmission conversions for Jeeps are in kit form and sold as individual components. Shop Advance Adapters Now