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Good description Don, kinda what I thought. So, I figure a spacer block behind the backing plate to let the outer ring clear the U bolts and align with the drum. BUT, it also occurs to me that the original backing plate might work too IF the wheel cylinder offest from the plate can allow it...

One of the Q's I have--don't have the backing plates yet--since the center of the shoes is a different distance out does the backing plate have a boss to move the wheel cylinder out or does the wheel cylinder have the offset cast in.

Been burning brain cells---got a concept that might just work. Using post #16 pic as a reference for the two hubs, the drums would be in about the same place. A type being behind the flange, B type being outboard. So, if the brakes are 3 1/2 instead of 2 1/2, where does the extra 1" come...

Really good to know that!!!! Should be going to his place this coming week. Before I go I will do some tape measure work on my truck and compare that to what he has. Will check difference between the springs and the backing plate mount, and offset in the plates. My understanding is that the...

Tnx for clarifying the burb. Yep, the reds only seem to do that--get red--:rof: (well, not quite that funny)

Thanks guys, both very good tips. Did not know of the wheel cylinder diff. but makes sense. Gonna look for a matched pair of drums that have the most meat left on them and get them turned. I only use Raybestos semi-metallics--regardless of what they go in. Was saying that I thought the burbs...

My rig has JD7 brake code with 2 1/2" brakes in the rear. Everything else is rated higher than that so I decided to upgrade to slip on drums and 3 1/2". After several days of calling wrecking yards, like about 200 of them, if they have a complete rear end they don't want to split them up, $600...

Thanks for the tips Richard. Don't ya just love these plastic rigs??? At least mine doesn't have the cracked up foam dash top.

Was afraid of that. Thanks for the tip on the 'hidden screw', will look for it. Sounds like I need to visit the help baggie rack. So, the switch bezel just jiggle wiggles thru the opening? Any suggestions on where to start popping the tree pins out? How flimsy are the clips that hold the pins.

Is it possible to get at the spring without pulling the entire door panel off???

SS Diesel has rattle cans

Chart for stock ECM has a max of 12 psi at about 2000 under full load, backs down to 6-7 as RPM goes up toward redline. Turbo may only put out 1-2 psi at light throttle with no load. Am told by guru's here and elsewhere that 20 should be considered dangerous and EGT max is 1100. These are...

Get ur handy dandy air compressor out, set the output reg for 10psi and hook the gauge to it thru the line and fitting. Your home made bolt may not be letting air past it. Blow air backwards with engine off, should not build pressure.

I see two things---one is the "pop", the other is running with key off. First, the pop---GM resistor units often have a thermal fuse for each resistor mounted on the resistor block. They are often directly under and quite close to the resistor itself. When these things reach a certain...

Brakes need alot more attention than the hubs, I see no reason to dis-assemle the hub if I don't need to. Adjustment is the same regardless.

Well folks, I just googled 'GM 14 bolt brakes' and watched several you tube vids. I, for one, am not gonna go thru the whole hub thing just to work on the brakes!!! I am gonna find a dead dually in a junk yard and swap hubs and axles!!! Not gonna put dually's on the truck,, just a spacer ring...

War, You are right, light and heavy versions but it's not quite that simple. What I found is that a 1500 can go up to above a base 2500, and a 2500 can go up to above a base 3500, then a 3500 can go up to what would be a 4500. All I need to do is swap drums and hubs and mine would be the...

Thanks War, BUT, brings a question, you said "in the drum", by that you mean the drum/hub assy. right? Looks to me like in the hub part. Now a "BIG" question, if I need drums, how do they come off the hub? Yep, raybestos semi-metallic, only thing I buy, also lifetime warranty. Once...

I think the change to disc can be a bolt on. Place called pirate4x4 had a link to the conversion. Another post said if yours is the big brake version there is no improvement to disc. Possibly due to ABS

Still don't know which brake shoes I have, guess I will need to pull a drum to find out. That's where the RPO codes don't tell you anything except type and weight rating. Mine could be either one. Everything related to running gear seems to be for a 3500. It looks to me like GM used a 3500 8...