I have a 72 340 Duster with a 8 3/4 non sure grip rear. Would it be easier and cheaper to to find another center section thats a sure grip or make the one I have a sure grip. The rear in the car is a 489 case.
How hard is it?
- Thread starter gtgto
- Start date
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SirDan
Well-Known Member
It's not very hard to put one in but you need a magnetic base dial indicator.
j par
Well-hung Member
Easier - six in one, half dozen in the other. Cheaper - maybe a little, but you'll get what you pay for.
i called Dr. Diff (Cass) ordered new everything - gears, bearings (and new green bearings for my axles), and spool (probably not your thing) sent to my door - under $500 plus $175 for professional local setup.
i called Dr. Diff (Cass) ordered new everything - gears, bearings (and new green bearings for my axles), and spool (probably not your thing) sent to my door - under $500 plus $175 for professional local setup.
moper
Well-Known Member
What's used and for sale now is not really promising. I'd just convert what you have - it is cheaper as you can leave the pinion gear in place if it's in good shape now but just a one-legger. I'm not a fan of the Sure Grips availabel now either. Buy a Tru Trc, stick that in with new carrier bearings, and go. If you want to change ratios you can do that. Cost in parts is about $700 + S&H for the Truc Trac and bearings; about $1000 + S&H for ring & pinion, Tru Trac, and a few other "should haves". Labor can vary, I get $200 for regearing them. If you don't have the tools, prob better to have a place that does 4wd work do it.
No he does not. Only if he is changing gear sets.
d55dave
Well-Known Member
He would need a dial indicator, magnetic or conventional base, to measure backlash before disassembly and to put it back the same after reassembly. Is there some other way to do it that I am miissing Rusty?
Like heck he would. I been settin backlash for years without a dial indicator. Once you feel what .006-.010" is, it aint hard to hit.
moper
Well-Known Member
I disagree RRR. maybe that's why you get the noises....lol. The last set I did (like a month or two ago) the lash spec was .007 +/- .002. You couldn't feel that nor could you feel if there's any varience around the ring gear which tells you if it's on the carrier right or not.
To swap the carrier you need a dial indicator and magnetic is best. You also need a press, and either a cutoff wheel or something to remove the old bearings. I also think a rotating torque type torque wrench is important - but that could be done by feel if you didn't have one and knew what things should feel like.
To swap the carrier you need a dial indicator and magnetic is best. You also need a press, and either a cutoff wheel or something to remove the old bearings. I also think a rotating torque type torque wrench is important - but that could be done by feel if you didn't have one and knew what things should feel like.
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