Join Date: Sep 1999
Location: Vancouver, WA, near Portland, OR
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Re: 67 j 20
J-20 designation didn't come until '74. J-2000 should be the correct designator or my favorite "Gladiator." The J-2000's had 120" wheelbase and was broken up into four different models. J-2500's & J-2600's were 1/2 ton, J-2700 was 3/4 ton and J-2800 was 1 ton. Front axle should be a closed knuckle Dana 44. Rear axle will be either a 19 spline two-piece tapered Dana 44, (not as strong as the 30 spline one-piece flanged 44's that showed up mid year '70), or a Dana 70 full floater. Count the rear wheel bolts. 5 will be Dana 44. Also a nut holding the rear brake drum on the axle is another clue it's a tapered 44. If both front and rear axles are same size, they're both 44's, if there's an obvious massive size difference between front and rear axles, it's a 70 in the rear. Although the tapered 44 is weaker than the flanged 44, it can be converted to a full-floater which would make it stronger than a flanged 44, but still not as strong as a 60 or 70.