Dismiss Notice

Welcome To CK5!

Registering is free and easy! Hope to see you on the forums soon.

Score a FREE t-shirt and membership sticker when you sign up for a Premium Membership and choose the recurring plan.

Reverse 60 in da' back, What do you think?

Discussion in '1973-1991 K5 Blazer | Truck | Suburban' started by Twiz, Apr 25, 2001.

  1. Twiz

    Twiz 1/2 ton status

    Joined:
    Mar 8, 2001
    Posts:
    3,729
    Likes Received:
    0
    Location:
    Clearfield Ut.
    Reverse 60 in da\' back, What do you think?

    Reverse 60 in the back of a Blazer. (High pinion dana 60 with a 9.75" ring gear driven on the cost side) I would do this to keep the U-angles in the zone. To use a drive shaft with only 2 u-joints and repairable in the field. Also to tuck the T-case up into the frame for a better brake over angle with a low lift (4" to 6" lift) and to use 6-lug 15" rims.

    I'm mostly worried about ring gear strength (high torque applied threw a doubler) and oiling of the pinion bearings, the gear oil would have to be slung around the houseing into the oil channel that is on top.

    Wadda ya think?

    Twiztid
     
  2. thatK30guy

    thatK30guy 1 ton status Premium Member

    Joined:
    Jan 12, 2001
    Posts:
    32,076
    Likes Received:
    55
    Location:
    .
    Re: Reverse 60 in da\' back, What do you think?

    Stick with the 14FF for the 10.5 inch ring gear size and be done with it.
     
  3. Donovan

    Donovan 1/2 ton status

    Joined:
    Feb 17, 2000
    Posts:
    524
    Likes Received:
    0
    Location:
    Arvada, CO
    Re: Reverse 60 in da\' back, What do you think?

    Remember that you are driving on the back side of the ring gear with a reverse cut Dana 60. This will make it 20% weaker than a stock Dana60. It will be about the same strength of a 12 bolt, as in ring gear stength.

    Donovan
    <A target="_blank" HREF=http://www.rustbucket.coloradok5.com>http://www.rustbucket.coloradok5.com</A>
    Bigger is Better
     
  4. Brady

    Brady 1/2 ton status

    Joined:
    May 6, 2000
    Posts:
    628
    Likes Received:
    0
    Location:
    Parachute,Co
    Re: Reverse 60 in da\' back, What do you think?

    You would be using the weak side of the gears.You have too use a special housing for this that has the oil passages redisigned to provide oiling to the pinion bearing.This is not a bad idea but it is only just about as strong as a 12 bolt I would think atleast in the gear dept.Brady

    '73Beautiful Disaster <A target="_blank" HREF=http://beautifuldisaster.coloradok5.com>http://beautifuldisaster.coloradok5.com</A>
     
  5. Twiz

    Twiz 1/2 ton status

    Joined:
    Mar 8, 2001
    Posts:
    3,729
    Likes Received:
    0
    Location:
    Clearfield Ut.
    Re: Reverse 60 in da\' back, What do you think?

    O.K. all good points. I know it will be driven on the "coast" side of the ring gear, but that suckers (the ring gear) is big (9.75"). Do you realy think that will reduse it to a stock 12-bolt in-put-torque rating? And what is the in-put-torque rating of a 12-bolt?

    My experiance of 12-bolts, usualy involved case/spider/or shaft failures. Not ring and pinions.

    With the popularity of a reverse cut 60, -Dana trac went threw the truoble of makeing a hole new houseing- Do you think someone wil come out with a streight cut gear for a reverse cut houseing? Seams like all they'd have to do would be make a gear with less of a slope on the coast-side of the ring gear. Make it vertical instead if a slopped tooth.

    And by the way, I'm all for 14-bolts. They are by far the strongest houseing on the aplicible market, and still in production. But, the d-shaft angle, weight, and rim size, I don't like.

    Thanks for your time guys!

    Twiztid

    <P ID="edit"><FONT SIZE=-1>Edited by Twiztid on 04/25/01 09:15 PM (server time).</FONT></P>
     
  6. jarheadk5

    jarheadk5 1/2 ton status

    Joined:
    Mar 6, 2000
    Posts:
    4,389
    Likes Received:
    0
    Location:
    PA
    Re: Reverse 60 in da\' back, What do you think?

    When Dynatrac first made the reverse D60 available to the public, I read an article in FourWheeler where a rep from Dynatrac said something along the lines of "This reverse-cut D60 is, mechanically, about the same strength of a D44". Obviously, the 60 has the housing and tube strength advantage, but for the amount of money you'll spend for one of these from Dynatrac, you could buy a regular D60, and get 2 rear CV driveshafts from High-Angle Driveline or someone like that, and carry one as a spare. Or, save lots of cash and run a 14-bolt FF.

    [​IMG] Semper Maintenance!
     
  7. Emmettology 101

    Emmettology 101 3/4 ton status

    Joined:
    May 9, 2000
    Posts:
    8,126
    Likes Received:
    0
    Location:
    FL
    Re: Reverse 60 in da\' back, What do you think?

    There are alot of people on the ARCA circuit running RC D60's with low ratios and big tires. I dont see there being that big of a problem.

    Go over to Pirate4x4.com, there are quite a few guys over there runnign a RC D60 rear with low ratios and big tires..

    Mike - <A target="_blank" HREF=http://emmett.coloradok5.com>http://emmett.coloradok5.com</A>[​IMG]
     

Share This Page