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  3. SPICER DANA TTC TREMEC 67-8-6

SPICER DANA TTC TREMEC 67-8-6 Gear 42T 8/6

67-8-6 Spicer Dana Ttc Tremec Oem Gear 1st 42t 67 8 6 6786

( Brand: Spicer Dana Ttc Tremec ), ( Manufacturer Part Number: 67-8-6 ), ( Part Type: Gear )

Review SPICER DANA TTC TREMEC Oem Gear 1st 42t 67 8/6 6786

Introducing the Spicer Dana TTC Tremec 6-Speed 42T Gear Set, part number 67-8-6. This high-performance gear set is designed for heavy-duty applications, making it an excellent choice for those seeking superior power transmission and durability.

The TTC Tremec 6-Speed transmission is a favorite among off-road enthusiasts and professional racers due to its robust design and ability to handle high torque loads. This gear set is specifically engineered for the TTC Tremec 6-Speed transmission and is ideal for use in Dana 60 or Dana 70 axles.

The 42-tooth gear is the largest in this set and is responsible for transferring power from the transmission to the axle. It is precision-machined from high-strength steel and features a tooth geometry that ensures smooth and efficient power transfer. The gear teeth are hardened and shot-peened to provide increased strength and durability, ensuring a long service life even under the most demanding conditions.

This gear set also includes five additional gears: a 1st gear with 11 teeth, a 2nd gear with 23 teeth, a 3rd gear with 15 teeth, a 4th gear with 11 teeth, and a 5th gear with 11 teeth. Each gear is manufactured to the same exacting standards as the 42-tooth gear, ensuring a perfect fit and smooth operation.

Installing this gear set is a straightforward process, thanks to its bolt-in design. The gears are identified by their unique tooth patterns, making installation a breeze. Additionally, the set includes all necessary hardware, making it a complete solution for upgrading your TTC Tremec 6-Speed transmission.

In summary, the Spicer Dana TTC Tremec 6-Speed 42T Gear Set is a high-performance upgrade for your heavy-duty vehicle or racing application. Its precision-machined gears, hardened teeth, and bolt-in design make it a reliable and efficient solution for powering your Dana 60 or Dana 70 axles.

The Spicer Dana TTC Tremec T-56 6-speed transmission, specifically model 67-8-6 with a 42 tooth input shaft (6786), is a popular choice for off-road vehicles and high-performance applications due to its robustness and durability. Here are some pros and cons to consider before making a purchase:

Pros:

1. Heavy-duty design: This transmission is built to handle the extreme conditions typically encountered in off-road environments. It is known for its strength and ability to withstand rough use.

2. Wide ratio coverage: The T-56 transmission offers a wide range of gears, making it suitable for various driving conditions, from crawling up steep inclines to high-speed highway driving.

3. Smooth shifting: The synchronized gears in this transmission ensure smooth and consistent shifts, reducing the risk of engine damage caused by harsh shifting.

4. Easy to upgrade: The T-56 transmission is a popular choice among off-road enthusiasts due to its versatility and ease of upgrading. There are numerous aftermarket parts and performance upgrades available.

Cons:

1. Complex installation: Installing the T-56 transmission can be a complex and time-consuming process, especially for those without extensive mechanical experience.

2. Cost: The T-56 transmission is a premium option, and its cost can be a significant investment for some.

3. Weight: The T-56 transmission is heavier than some other transmission options, which can affect the overall weight and performance of the vehicle.

4. Limited availability: Due to its popularity in the off-road community, the T-56 transmission may not be readily available from all suppliers or dealers.

Conclusion:

The Spicer Dana TTC Tremec T-56 6-speed transmission, model 67-8-6 with a 42 tooth input shaft (6786), offers a robust, durable, and heavy-duty solution for off-road and high-performance applications. Its wide ratio coverage and smooth shifting make it an ideal choice for those seeking versatility and reliability. However, its complex installation, cost, weight, and limited availability may be drawbacks for some potential buyers.

Recommendation:

If you are an off-road enthusiast or performance driver seeking a reliable and durable transmission for your vehicle, the Spicer Dana TTC Tremec T-56 6-speed transmission, model 67-8-6 with a 42 tooth input shaft (6786), is an excellent option to consider. Be prepared for the complex installation process and the associated cost, and ensure that you have access to a reliable supplier or dealer for this premium transmission.

Details:

Up for sale is a Spicer Dana TTC Tremec OEM 67-8-6 Gear 1st 42T 67 8/6 6786.

part #: 6786 price

  • $1249.99

specifications manutransmission:

  • brand: Spicer Dana Ttc Tremec
  • mpn: 67-8-6
  • part type: Gear

payments manutransmission:

  • wallet: Paypal
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  • credit card: Mastercard

general manutransmission:

  • Car Truck Parts Accessories > Transmission Drivetrain > Manual Transmission Parts
  • condition: New

offer manutransmission:

  • sold: 0
  • options: Ship-to-home
  • availability: In Stock
  • started: April 5, 2026
  • quantity: 1

shipping manutransmission:

  • transit: 4-5 Days
  • service: Standard
  • type: Fixed
  • cost: $23.50
  • class: Standard

returns manutransmission:

  • paid by: Seller
  • time: 30 Days
  • policy: Returns Accepted

seller manutransmission:

  • # reviews: 405
  • rating: 100.0%
  • city: US
part type: gear,
category: auto parts > car truck parts accessories > transmission drivetrain > manual transmission parts, sku: 12099479728568772,

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