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Now that I'm at the Ohio Key Sunshine Resort and Barth spa, I started on my projects.
Mag-Hytec makes nice cast aluminum differential covers. They have increased fluid capacity, a magnetic drain plug, and a dip stick (also magnetic) The extra capacity is due to larger internal volume and higher fluid level.
I decided to replace my cover while in the process of inspecting the gears and replacing the fluid.
Chevrolet used several axles on their chassis. I found this chart helpful:
The covers are available from the factory but I got one cheaper from an Amazon link.
My axle is a Dana 70 with 4.56 to 1 ratio (axle tag on 7'oclock bolt)
Gears look good, clean the case and mating surface
Install cover and fill. Love that dip stick!
Capacity is almost 2 qts greater and fluid flows in axle tubes as well as the center differential.
86 Regal SE 33 Tag axle--"98" Monarch 37
Chev P3(7) 454TBI--------Spartan MM, 6 spd Allison
400 hp fuel injected-------Cummins 8.3 300 hp
Wow! Nice upgrade.
Formerly: 1997 Barth Monarch
Now: 2000 BlueBird Wanderlodge 43' LXi Millennium Edition DD Series 60 500HP 3 stage Jake, Overbuilt bike lift with R1200GS BMW, followed by 2011 Jeep Wrangler Unlimited,
“I haven’t been everywhere, but it’s on my list.”
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