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Old 09-16-2023, 01:50 AM   #1
pjmoreland
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Join Date: Jan 2005
Location: CA
Posts: 5,988
Tremec TKX 5 Speed Transmission Installation

***EDIT***
Here's a video of it in action
https://youtu.be/FQRVK4FXyFM
*********


I've been wanting to install a manual transmission in my truck for a while now, and I finally decided to do it. I ordered a TCET7805 from Summit. It has a 2.87:1 first gear ratio which will give me a total reduction of around 10:1 with my 3.73 rear end. It also has a .68:1 fifth gear which will be great on the highway.

I plan to use stock mechanical clutch linkage. I am still working on tracking down all of the parts. I have installed the clutch pedal so far. I used new bushings and I installed a new pedal return spring.

I will be using a stock bellhousing from a 1967 Chevy truck, so it has the correct 4.685" bore for the TKX.

The stock TKX shifter is too far back for a truck, so a mid shifter kit is needed. Silver Sport makes one that requires a couple of shafts to be cut shorter inside the transmission. MDL makes one that doesn't require that modification, so I planned on getting the MDL unit. I accidentally ended up getting a unit from Performance Parts Warehouse because I confused it with the MDL unit. The one downside of this mistake is that the one I got doesn't have a 5-4 shift reverse inhibitor. It cost $100 less, so I'm going to give it a try. Installation wasn't too bad, although the transmission tail housing had to be removed. All of these mid shifter kits disable the neutral safety switch. I'm going to install a brake switch on my clutch pedal instead.


***EDIT***
Here's a parts list:
Transmission TCET17805 Tremec TKX, 2.87 first, 0.68 fifth, 26-spline Summit
Shifter Knob SLA-1630108 SST 5 Speed, Black, 3/8-16, locknut Summit
Cross Member XMG-23000 SST GM C10 Gen 2 1967-72 Summit
Transmission Mount ISG-622378 SST A41 GM Tremec TKX Summit
Speedometer Gear SPA-020 SST 20t, black, SPUN-10020 Summit
Reverse Harness ELA-00200 SST Summit
Clutch Kit 75221 McLeod Street Pro Kit: 1961-79 GM 11" x 1-1/8x26, 500HP Summit
Flywheel 1530 RAM Billet 168t, steel, 11", one-piece Rear Main Seal Summit (this is replacing the Luk cast flywheel I installed initially)
Flywheel Bolts 200-2807 ARP Summit
Pressure Plate Bolts 130-2201 ARP Summit
Pilot Bearing PB656HD Timken, .594" ID, 1.094" OD, .750" Width Summit
Starter 336-1849 ACDelco Starter, Bellhousing Mounted Summit
Speedometer Cable Adapter SPA-01 SST, Accepts Threaded cable (stock speedo 70") Silver Sport Transmission
Slip Yoke U1659 Strange Engineering, 1350, 31-Spline Quick Performance
Pinion Yoke GM 12 Bolt Forged Pinion Yoke, 1350 Quick Performance
U-Bolts SPI 39418X Spicer, 1350 O'Reilly
Carpet 17901232 ACC, High Hump, No Tank, Loop, Mass Back Rock Auto
Shifter Boot 132077-4 68-72 4-Speed 4WD GMCPauls
Shifter Boot Retainer 19780019-4 68-72 4-Speed 4WD GMCPauls
Relocated Shifter TCKT18206 Tremec Mid Shifter
Shifter Handle 53851HST Hurst, 73-87 C10 Summit

Here are other items I had to get:
Bellhousing & Inspection Covers - stock 1967 Chevy truck with correct pilot hole diameter for TKX ('68-up are the wrong size)
Stock Mechanical Clutch Linkage:
Clutch Pedal
Clutch Pedal Pad
Clutch Pedal Bushings
Clutch Pedal Return Spring
Clutch Pedal Push Rod
Clutch Pedal Push Rod Firewall Boot
Bellcrank
Bellcrank Frame Bracket
Bellcrank Engine Bracket
Bellcrank Outer Felt Seal
Bellcrank Inner Felt Seal
Bellcrank Ball, Bushings, Snap Ring, Retainer, Nut
Bellcrank Grease Zerk
Clutch Fork Push Rod, Wedge, Pivot, Jam Nuts
Clutch Fork
Clutch Fork Ball
Clutch Fork Ball Retaining Clip
Clutch Fork Boot
Push Rod Clip, qty 3
Clutch Fork Return Spring
Brake Switch - for use as clutch safety switch (made custom bracket)
Floor Shift Steering Column
Driveshaft - custom-made by a local shop
Attached Images
     

Last edited by pjmoreland; 09-28-2024 at 12:57 PM.
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