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12 bolt true trac - how strong for towing.
I have a 1976 GMC 1/2 ton 454/th400/2WD suburban that I want to rebuild the rear axle. I want to tow with it, up to 5000 lbs and want to know if a Detroit true-trac is as strong a differential as a factory open-diff for the 12 bolt factory rearend. I live in the Rocky Mountains out west, so long pulls up hills will happen sometimes. I would be using a 3.73 gear ratio with the true-trac.
Does anyone tow using a 12 bolt with a true-trac? If so, how much weight do you tow that you’re comfortable with? Thanks |
Re: 12 bolt true trac - how strong for towing.
Not even close to apples but I have used the Tru Trac on a number of LS projects. A couple that had close to 500 rwhp. Beat on the pretty hard. No failures.
I would suggest a new set of 30 spline Moser axles as long as you are in there. |
Re: 12 bolt true trac - how strong for towing.
1500lbs trails surge brakes 4200lbs car factory open 308gear 12bolt was 454 1977 now 305 no problem 1989-2006 ever weekend. I have driven this one hill is a kill on both motor unless you're doing 80 over the speed limit by the time you get to the ark of the hill you will drop 80 they both drove the same on that hill no power, just burn lots of gas there your rpm goes way up and no mph gain. I heard Tru Trac there pretty good.
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Re: 12 bolt true trac - how strong for towing.
Like LS shortblock said,,
I have a TT in a 12 bolt 67 camaro,, 406/ ~550hp 4 speed car.. I beat the life out of it and the TT has never failed. When i replace the eaton friction posi's in my burb I will go TT. I am also putting TTs in my 78 dentside.. can't go wrong.. Chris |
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