T-56 Transmission Install Thread

We need to start getting threads stickied in the New Gen Hemi forum as it's been alot of the same questions.

I grabbed this list from Bill Reilly over at bigblockdart.com and I'll add to it and modify once I figure more out.

Differences between the T-56 Viper and T-56 GM and T-56 Magnum (new Challenger)

If theres a fill plug directly on top right behind bell face, it's a T6060. If no fill plug, it's a T56.

GM/Ford T56/6060 - 8.25 input shaft
Viper T56/6060 - 8.25 input shaft, but 7.25 from bell mounting face. GM bell is 1" deeper than Viper.

TR6060 requires slight clearancing on bottom of quiktime bell. Just a small grinder notch to clear the casting


Parts required for install

Quicktime Bell B/RB/Hemi - #RM-8073

QUICKTIME includes some trans mounting bolts, but they suck. Get your own G8 bolts.
----- 8 - 3/8-16 X 1.5" Grade 8 for trans to bell
----- (7) 3/8-16 X 1" grade 8 with lock nuts for block plate to bell
----- (2) 7/16 X 2" grade 8 with lock nuts for bell to block
----- (4) 3/8-16 X 1.25" grade 8 for bell to block
For starter bolts, use 2 of the Quicktime socket head bolts

B/RB/Hemi steel 10.5” flywheels 130 tooth internal balance - RAM-1503 - 6-bolt
- RAM-1583 - 8-bolt
- McLeod 8-bolt - 464100

Clutch ---- 10.472" HD diaphragm style AMC, Buick, Pontiac, Chevy - ACT# GM012
Disc-------- 10.5" street/strip organic AMC, Buick, Chevy - ACT# 3000903
Pilot Bearing – Dakota roller bearing – MP#53009180 or custom. Fits large hole, crank drilling for stick is not required. Tremecs all have 3/4" pilot like regular 4spds.

DONT FORGET TO PUT BLOCK-SAVER PLATE ON BEFORE FLYWHEEL!!! Yep, twice I forgot this LOL

If block plugs are not flush or recessed, you have to drill clearance holes in plate.

Viper hyd. throw-out bearing - Mopar #05037357AB mounting bolts - (2) 8mm - 1.25 X 25mm long
Viper throw-out bearing adapter fitting - Russell #640281 - allows -3AN braided hose

Trans mount, poly GM-style - Energy #3.1108 Trans bolts - 10mm - 1.25 X 25mm long

Slip Yolk – T56 30-spline - common small seal – Not sure if this is all T56 or just GM ones.
- TR6060 30-spline - large seal - Mopar part#5093385AA - maybe viper T56 also. This # might be whole viper driveshaft, but I couldnt locate just the slip yolk separately.

Shifter - Hurst Pro-Billet (Mustang T56) #391-5036 - GOOD A-BODY LOCATION
Ford Cobra 6spd leather knob #M-7213-B

T56 speedo – best method – Autometer electronic speedo is direct connect. Or use street-rod style converter kit for cable drive.
TR6060 has no VSS – Haneline has GPS sensor kits http://www.haneline.com Connect to Autometer speedo
- FAST Systems driveshaft speed sensor kit - 1.875 collar(8.75mopar yolk) #301437
MUST USE BILLET YOLK - if 7290ujoint, yolk must be turned to fit sensor collar. 1310 billet yolk has enough room to fit collar without machining. Cast yolks may not allow room for collar to fit.
FAST sensor is best method, as it has just 2 magnets - pulse count is low enough to work without a signal converter box. Other collars I found have 4 magnets, making the pulse count too high to wire direct to speedo.

FAST sensor requires small bracket to attach to top of center section.

Use cheapo 12v - 5v reducer for sensor and wire sensor directly to Autometer electronic speedo. These are commonly had with a lighter socket plug on them - just cut off the plug and wire it under the dash.


This is it for now, I'll update as I go on...

Riddler