Jump to content

Diff Drop and Idler Pitman Arm Supports

DMAXNAZ

By DMAXNAZ
in Modifications & Accessories

Recommended Posts

DMAXNAZ Enthusiast

DMAXNAZ

Posted
Posted

The diff drop is new to me for a torsion cranked leveled truck. I had over 100K on my last 2500 when I sold it, and it was cranked from day one with no diff drop. I know I can get the spacers for $40 and have them installed in under an hour, but is it actually needed?? I don't seem to feel any vibration from the front end that would tell me I might need to do this mod. Is it just a piece of mind thing?? On my last truck I replaced the idler and pitman at 70K. I did install the supports when that replacement took place. It was hard to understand how they actually worked until I installed them and you could see how they would help. Even looking at a picture you can't really tell. I would appreciate any feedback on either mod if possible. 

SierraHD17 Senior Enthusiast

SierraHD17

Posted
Posted

The diff drop is just to adjust for the cv axle angle increase you get if you crank the torsion bars up.  It has zero to do with the steering and they are not connected to one another. The supports would be for the added stress of larger heavier tires and if they help I couldn't tell you.  

 

I have the diff drop on my 17 and it flattened out my cv axle angle back to close to stock.  The more angle you run on a cv the more stress it sees and faster it wears out.  If you never really use 4wd it would take a really long time with no load on them.

Archived

This topic is now archived and is closed to further replies.

Go to topic listing

  • Latest Articles

  • Posts

    • Another JR
      Parking Brake - Automatic Engagement Questions

      By Another JR · Posted

      On 2021 3500hd it consistently sets automatically when selecting park if the incline/decline is above a certain angle. 
    • Policeoff01
      Feeling Vibration and Jiggles in 2024 HD Gasser Steering Wheel

      By Policeoff01 · Posted

      Curious, did anyone ever get a fix for the vibration reported here.   I have a 2024 Silverado with 6.6 duramax.   I’m noting the same vibration resonating up through the steering shaft into the steering wheel.    Best way to describe- like someone is tapping on the steering shaft/components and it’s resonating into the steering wheel.    thanks. 
    • Gkistler
      2015 Sierra Denali L86 cyl 5 misfire at idle

      By Gkistler · Posted

      Hi friends - first time poster. I have a 2015 sierra Denali with 150k miles, I’m the second owner and she’s given me 75k of great service. I run a pulse AFM disable device. Starting Thursday when I exited the freeway after a short local ride it started idling rough, with an obvious misfire shake and was down on low end power.  I got it home and hooked it up to my scannner and found no codes but in live data a pretty bad misfire on cylinder 5. I replaced the coil, plug and wire with all new OE replacements (Delphi gn10165 coil, acdelco wire and 41-168 plug). It’s still behaving the same way after firing the parts cannon at it.   I know cyl 5 is a non AFM cylinder so I am not thinking this is AFM related but I’m kinda at a loss. injector? Bent pushrod? It’s running too well over 1k rpm to suggest those IMO. Has anyone chase this issue before and what was it? Any suggestions? 
    • zibzer2
      Pulsating Noise 4Cyl Mode

      By zibzer2 · Posted

      2017 Silverado L83 5.3l 6speed transmission Hello, not a new member but havent posted in a while and my old signup info isnt working so had to create a new account. anyways, I have an issue with my truck and hope someone can spread some light on whats happening: -when it goes to 4cyl mode it makes a clunk sound (but not when coasting or going downhill) -when in 4 cyl mode and under load it makes a load pulsating sound (not a tick). -goes away completely when in M5 gear or when plugging in an AFM delete. Im guessing it is one of 2 things but im not convinced of either to be honest. 1. lifter stuck in v8 mode 2. torque converter shudder realistically it doesn't seem like the TC as there is no physical vibration , and it never happens in v8 mode. but maybe? and wouldnt a lifter make a sound whether with load or not? any ideas let me know please. thank you!  
    • Chuck FB
      Some Assembly is Required

      By Chuck FB · Posted

      Which has made me wonder with the various engine failures of a few brands in the last few years, is it sub par materials such as lifters etc causing failures, or bearing clearances on the crank etc or perhaps bad designing of an engine physically or causing too much load on the components due to the hp/torque they can push out of them. Or is the oil viscosity and additive package of current oils or a lack of oil flow by an oil pump not able to supply sufficient oil at idle or under high load at low rpm. Or is it every item I listed that combined together has pushed the limits so far to the left that there is hardly a margin of safety left and add in some fuel dilution and too long of an OCI and premature engine failure is the result ?. 

  • GM-Trucks.com Clubs

  • Popular Contributors

×
×
  • Create New...