my favorite drink is synthetic oil

CHRISTOPHER MCKITTERICK

1968 Chevelle SS396 Project:
Unboxing the New Rear and Transmission



You know how people are always sharing their "unboxing" videos of stuff like new computer hardware or new cameras? Well, I think it's about time to share an unboxing of some awesome muscle-car parts! (Yes, I am that much of a car-geek.) Here are the first two in a series of videos wherein I tear open new performance parts going into the Chevelle. I hope you enjoy!

In this first video, I tear open the crate for the Chevelle's brand-new Moser Engineering 12-bolt Muscle Pak rear end as soon as the UPS Freight driver leaves my driveway:

If you're as big a car-geek as I am, you probably want some specs on this rear:

  • New Moser 12-bolt Chevy-style housing (made in the U.S.A.)
  • GM A-body OEM chassis-mounting provisions
  • Seamless steel tubing (3" O.D., 1/4" wall)
  • Wilwood forged Dynalite rear brakes with internal drum parking brakes
  • Custom alloy 33-spline bolt-in axles
  • 3.55:1 Pro/Street ring-and-pinion gears
  • Detroit Truetrac helical-gear posi differential
  • 1350 series pinion yoke
  • New Timken bearings, studs, seals, heavy-duty retainer plates, housing ends, and T-bolt kit
  • New braided-stainless brake lines, clamps, and Lokar emergency brake cables
  • Aluminum through-bolt-style girdle rear cover with drain plug
  • Semi-gloss red powdercoated
  • 1/2" x 20 x 1-1/2" (0.620" knurl) wheel studs

This replaces the 3.23:1 ratio, non-posi, 10-bolt wearing stock drum brakes that's back there now.

 

In this one, it's the new Tremec T-56 Magnum 6-speed Hurst transmission conversion kit and related goodies that'll modernize the Chevelle and truly transform the way it runs:

And here are some specs on this transmission conversion kit:

  • Tremec T-56 Magnum 6-speed transmission, rated at 700 lb-ft of torque
  • 2.97:1 first gear ratio (not sure about the original Saginaw, but it's probably similar)
  • 2.10:1 second
  • 1.46:1 third
  • 1.00:1 fourth (same ratio as the stock Saginaw in 4th)
  • 0.74:1 fifth (overdrive)
  • 0.50:1 sixth (double-overdrive)
  • QuickTime SFI-approved scattershield (in place of the stock bellhousing)
  • Hurst T-56 Magnum hydraulic throwout-bearing kit
  • Custom-length Inland Empire NHRA-approved 1026 drawn-tubing driveshaft
  • Needle-roller pilot bearing
  • Associated hardware, hoses, speedometer cable, and electronics
  • Energy Suspension polyurethane transmission mount
  • White 6-speed Hurst shift knob
  • 6-speed center-console plate
  • Sheet-metal tunnel patch

This replaces the stock Saginaw 4-speed (not the celebrated Muncie) that's in there now, which is really only a 2-1/2 speed with marginally useful reverse. Going from a 1:1 ratio in fourth gear to 0.5:1 ratio for 6th will literally cut highway RPMs in HALF! That translates into WAY less fuel consumption and wear-and-tear on the 396 engine - and lots less noise.

 

Next: Pulling the old 4-speed.

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