Join Date: Jan 2000
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The heavy GVWR trucks used the 4500 starting in 93 or so. The 4500's built before 95 had a 6.34 1st, and the 95 and later trannies had a 5.61 1st gear. Most of the LD trucks had Getrag 4 and 5 speeds until 93, and the NV3500 starting in 94. They are basically the same tranny with different names and are all junk. Some light duty trucks (including the ones with HD towing packages) had the 4500, but thats a rare find. For more info on the 4500, check out Advance Adapters.