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All the parts used in the telescopic halfshafts come from a late 70's 3/4 Suburban driveshaft. All readily available. But you still need to use the snap rings.(They are not c-clips). To use actual c-clips you need to change to 30 spline stub axles and spider gears. Which, if you are planning any...

Hi John, Tom's aluminum diff will be based on the iron diff and will allow the use of a 3 series 12 bolt carrier. But you still won't be able to use the 12 bolt setup in an 80-82 because it won't clear the batwing. Mike

What a controversy! But the truth is everyone is correct. It's not a bad diff but it sure has it's problems. The metal thickness is all over the place. I have not seen two alike with the same internal measurements. Cap thickness varies drasticlly, which is why some break easily and some last...

The case says new clutches but if you look closely it has slotted clutches which haven't been available for many years. I hope this works out for you too but unfortunately the odds aren't good. Howard, what happened it Detroit? Mike

67-76 were just a junction block with the switch In 77 they changed to proportioning valves. You guys are both right. Mike

Yes, the small flat rate box. They're changing the rates so oten now I have to check first before I give a quote. Mike

The rates have gone up again. $41.95 to the Netherlands. Mike

Yes, all the pinion yokes take the 1310 joint. Mike

The diffs are the same except for the stub axles. 80-81 manual and all 82 use the 1350 u-joint. The bolts that hold the straps are 5/16 thread. 80-81 auto uses the 1330 joint. The distance from cap to cap is 3.62 in on both. Cap diameter is 1.06 for 1330 and 1.18 for the 1350. Also the auto stub...

The corvette iron diff shares the same bearings as the early 12 bolts. The 8.5 uses much smaller side bearings so installing one would be almost impossible. Mike

The weight is right at 55 lbs without the cover. Approx. 20 lbs lighter than an iron diff. No problem talking about my daughter, we're quite used to it.

A couple thoughts come to mind. Do you have a good gakest inside the gas cap? Is the drain hose clear on the filler neck boot? Mike

Hi Wayne, I have been absolutely buried in work. Mainly trying to finish up some lingering projects. Been too tired to spend much time on the comp. Parts are getting expensive for the crossfire and you are limtied to how far you can go with it. But on the other hand I still remember when midyear...

Hi Wayne, Honestly......no

Hi Mike, 1. The carrier is thicker and has more neat around the cross shaft. But the clutches are smaller. 2. I'll get you some comparison pics 3. If memory serves correct 8.2 4. No idea. I wouldn't use a D36 in a riding lawnmower. 5. Slightly shorter and thinner metal used in the tubes on the...

No, they're not the same. If you convert from a Dana to an iron diff you have to change the spindle flanges and the halfshafts. Mike

The finished diff with steel cap.

The D36 isn't a bad diff but it is small. It will handle moderate torque loads but it can't handle shock loads. Same as the 80-82 D44. The damage occurs when the gears are unloaded and shock forces are applied. A good example is rolling at 5mph and dumping the clutch. Automatics don't deliver...

80 and 81 automatics use the 1330 joints 80-81 4speeds and all 82 use the 1350 Nothing interchanges between the iron diff and the dana. If I ever get over this cold I'll get out to the shop and take comparison pics. Mike

69427, I'm doing comparison tests right now between the iron diff and the C3 Dana. I'll post the pics. If you look at the pics Marck posted you can see the changes they made to the case to support the bearing in the C4. They eliminated the lip inside the cap and the cap is no longer having to...