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I have an 8 1/4 with what I believe to be 3:91 gears - but not Sure-Grip. Will smoke the RR tire easily. First of all - Why build a 3:91 without SG ?




Some 4 cylinder and V6 Dakota 4x4 trucks had NON SG 3.55 and 3.91 axles. NO 3.23 ratios were made, but the closest offered was a 3.21.