What and where to order a sure grip

Engine, Transmission & Driveline

  1. 74delta

    74delta Member

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    Tried to message your inbox is full. Have a phone number I can reach you on?
     
  2. MEV

    MEV Active Member

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    Or just run a detroit locker in your existing rear-end. No matter what anyone says they are totally streetable. You would never know its in mine unless i told you while you were driving it.
     
  3. 74delta

    74delta Member

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    I think I'm leaning that way since I dont want to wait months for dr diff to get a clutch type in stock
     
  4. MEV

    MEV Active Member

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    not to mention, there is nothing to wear out...ever.
     
  5. CBODY67

    CBODY67 Old Man with a Hat

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    In some resoects, what GM has used for a good while might be considered to be a version of the "locker". Except that they use a governor weight to determine when to lock, rather than something else.

    From their product comparison videos, they'll have several competitors' vehicles traverse a concrete "ditch", where one wheel becomes "in free air". In the others, the pickups become immobile when that happens. On the Chevy, as the one free wheel slowly spins, enough to engage the governor, as the "locking" happens, the whole truck seems to shake, and BOTH wheels turn to get it our of the situation.

    Before that, they'd put their pickups (towing a then-normal-sized ski boat) up an incline. No big deal? Except that the rh wheel is on a slippery, soapy surface. THe competitors' only get about 1/2 way up before they can't go any farther, as the Chevy continues to the top. These videos might be on YouTube now?

    In some respects, these always seemed a bit curious to me, considering that the "limited slip" was only supposed to be about 75% "locking", all along, so might this be a more accurate description of how inadequate the clutches in them might be? Especially the cone-style? Rather than an endorsement of the particular brand of light-duty pickup truck?

    I believe that in the later '60s, what was in the 3/4 ton pickups was the "locker:" style rather than the limited slip style?

    When the Torsen came out, it was supposed to be "the best" of the breed, but the OEMs didn't really notice, as I recall, continuing on with what they already had. BEFORE the cone clutch models, all clutch plates were flat and had 4 stiff springs keeping everything "locked" until side-to-side wheel speed needed for them to be "unlocked" (as in going around a corner in town). When they didn't unlock easily, the lh side would pop and that could be felt. We have a '69 Chevy C-10 with a factory PTrac, which did that, even with new grease and plenty of additive. Just the nature of the beast? But one that could be fun with the old narrow-tread tires on wet pavement! Even used to advantage, sometimes. But it let us drive into sandy fields which might "stick" a normal pickup. BTAIM

    Enjoy!
    CBODY67
     
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  6. C-Sick

    C-Sick Member

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    As a GM truck guy (no hate please) I have no love or praise for GM's (Eaton) Gov-Lock. Worst OE traction device ever, and in the vast majority of applications it is fragile and prone to spectacular failures.

    My criticism is that it takes differential wheel speed to make it engage, so when it does it is a shock load to the tiny little parts inside. Then if wheel speed exceeds a set value it unlocks. for a 4x4 that gets used that is useless. In rocky, technical terrain you want locked from zero rpm for best control and the least breakage. In Mud you don't want it to unlock at high wheel speeds...because stuck. Wheel speed is king in the mud.

    Mostly though, they blow up. I have personally blown gov-Lock shrapnel through the OE cover on a 12 bolt...backing out of a parking spot.

    I ran a Detroit in the rear of my 81 K5 Blazer. Manual trans, short wheelbase, on 39.5" bias ply Super Swampers. I was younger then, and it was my daily driver. summer, winter, wheeling...
    It would load up and give a bang once in a blue moon, but I blame tight city streets and tall bias ply tires for most of that. Mostly it was seamless. I'd run one in a car without hesitation.
     
  7. James Romano

    James Romano Well-Known Member

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    The "Red Pill" - you're a DIY kinda guy, like to tinker and adjust till it's perfect in your eyes. --> Dr. Diff or Detroit Locker.
    The "Blue Pill" - you're not all that mechanically inclined, it's the end of the summer and perfect for driving. --> Buy the complete unit, clean/paint it, slap it in and drive it to happiness.

    Choose...

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