Jeep CJ-5 Transmission For Sale: A Comprehensive Guide for Enthusiasts

Jeep CJ-5 Transmission For Sale: A Comprehensive Guide for Enthusiasts jeeps.truckstrend.com

The Jeep CJ-5, a beloved icon of American automotive history, embodies rugged individualism, off-road prowess, and a timeless design that continues to captivate enthusiasts worldwide. Produced from 1955 to 1983, these venerable vehicles have seen countless adventures, from conquering challenging trails to serving as reliable daily drivers. Central to the CJ-5’s legendary capability is its transmission – a vital component that translates engine power into motion. For many CJ-5 owners, the search for a "Jeep CJ-5 Transmission For Sale" isn’t just about replacing a broken part; it’s about preserving a legacy, enhancing performance, or embarking on a custom build. This article serves as a comprehensive guide for anyone navigating the market for a CJ-5 transmission, offering insights into types, considerations, purchasing tips, and more.

The Heartbeat of a Classic: Understanding CJ-5 Transmissions

Jeep CJ-5 Transmission For Sale: A Comprehensive Guide for Enthusiasts

At its core, a Jeep CJ-5 transmission is the gearbox that allows the driver to select different gear ratios, enabling the vehicle to move efficiently at various speeds and tackle diverse terrains. Given the CJ-5’s long production run, a variety of transmissions were used, evolving with engine options and performance demands. Over decades of use, these mechanical marvels can wear out, suffer damage from hard use, or simply become inadequate for modern performance upgrades like larger engines or tires. This makes the search for a replacement, whether stock or an upgrade, a common undertaking for CJ-5 owners.

The relevance of finding the right transmission for sale is paramount. It dictates not only the vehicle’s drivability but also its reliability, fuel efficiency (especially with overdrive units), and overall off-road capability. A well-matched and properly functioning transmission ensures that your CJ-5 continues to deliver the authentic Jeep experience it was designed for.

A Journey Through CJ-5 Transmission Types

Understanding the various transmissions offered in or commonly swapped into a CJ-5 is crucial for making an informed decision. These fall into two primary categories: original equipment and popular aftermarket/swap options.

Original Equipment (OE) Transmissions: Preserving Authenticity

The CJ-5 saw several manual and a few automatic transmissions during its lifespan, often tied to specific engine configurations (e.g., Willys Hurricane F-head 4-cylinder, Buick V6, AMC I6, and AMC V8 engines).

• 

  Manual Transmissions:

  • Willys T-90 (3-speed): Found in early CJ-5s with the 4-cylinder engine. Known for its robustness and simplicity, but lacks an overdrive gear.
  • Borg-Warner T-86/T-86AA (3-speed): Used with the early Buick V6 engines. A capable unit for its time.
  • Borg-Warner T-14 (3-speed): Introduced with the Dauntless V6 and later the AMC 4-cylinder and 6-cylinder engines. A strong, popular 3-speed.

  

  • Borg-Warner T-150 (3-speed): Predominantly found in later CJ-5s with AMC 6-cylinder and V8 engines (1976-1979). A very sturdy and common 3-speed.
  • Borg-Warner T-176 (4-speed): A robust 4-speed manual introduced in the late 1970s for AMC 6-cylinder and V8 engines (1980-1983). It’s a highly sought-after OE manual due to its strength and extra gear.
  • Borg-Warner T-4/T-5 (4-speed/5-speed): Found in the very last years of CJ-5 production (1982-1983) with the 4-cylinder and 6-cylinder engines. The T-5 offers an overdrive, making it desirable for highway driving, though it’s less robust than other options for heavy off-roading.



• Automatic Transmissions:

  • GM Turbo-Hydramatic 400 (TH400): A heavy-duty 3-speed automatic offered in later CJ-5s with the AMC V8 engine. Extremely durable but lacks overdrive.

Popular Aftermarket & Swap Options: Enhancing Performance

For those looking to upgrade their CJ-5’s performance, durability, or highway manners, several non-OE transmissions are commonly swapped in. These often require adapter kits for engine and transfer case mating.

• Manual Transmissions:

  • SM465 (GM 4-speed): A very common and extremely tough "granny gear" manual transmission from Chevrolet trucks. Its low first gear is excellent for crawling, but it lacks overdrive.
  • T-18 (Ford/Warner 4-speed): Another heavy-duty "granny gear" manual, similar to the SM465, widely used in Ford trucks. Also lacks overdrive but is incredibly robust.
  • NV3550 (New Venture 5-speed): A modern, full-synchro 5-speed manual found in later Jeep TJs. It offers an overdrive gear, making it excellent for highway driving, and is reasonably strong for most applications.
  • AX-15 (Aisin 5-speed): Another popular 5-speed swap from later Jeeps (YJ, XJ, TJ). Similar to the NV3550 in its benefits, offering overdrive and good strength.

• Automatic Transmissions:

  • TF999/TF904 (Chrysler 3-speed automatics): Common, compact, and reliable automatics that are relatively easy to adapt to AMC engines.
  • AW4 (Aisin-Warner 4-speed automatic): A highly durable and popular automatic from Jeep Cherokees (XJ). Offers overdrive and is a strong contender for a modern automatic swap.

Key Considerations When Searching for a Jeep CJ-5 Transmission For Sale

Purchasing a transmission, especially for a classic vehicle, requires careful consideration. Here are the vital factors:

1. Compatibility: This is paramount.

   • Engine Bolt Pattern: Ensure the transmission’s bell housing bolts up to your specific CJ-5 engine (e.g., AMC I6, AMC V8, Buick V6).
   • Transfer Case Compatibility: Your CJ-5 likely has a Dana 18, Dana 20, or a New Process 208 transfer case. The transmission’s output shaft must mate correctly, often requiring an adapter kit for non-OE units.
   • Driveshaft Length: Swapping transmissions can alter the overall length, potentially requiring new or modified driveshafts.
   • Shifter Location: Ensure the shifter clears the floor and is in a comfortable position.
   • Crossmember: A different transmission might require a custom or modified crossmember for support.

2. Condition:

   • Used: The most common option. Inquire about mileage, vehicle history, and any known issues. Always ask if it was tested before removal.
   • Rebuilt: A transmission that has been disassembled, inspected, worn parts replaced (bearings, synchros, seals), and reassembled. Often comes with a warranty. This is a highly recommended option for reliability.
   • New/Remanufactured: Less common for classic CJ-5 OE units, but some aftermarket options (like NV3550) might be available remanufactured. Offers the highest reliability but also the highest cost.

3. Intended Use:

   • Restoration: If you’re aiming for originality, stick to OE transmissions.
   • Daily Driver: Overdrive units (T-5, NV3550, AX-15, AW4) are excellent for highway comfort and fuel economy.
   • Serious Off-roading: Heavy-duty units like the SM465, T-18, or a rebuilt T-176 offer superior strength and low gearing.

4. Budget: Prices vary wildly based on type, condition, and rarity. Factor in not just the transmission cost, but also adapter kits, driveshaft modifications, fluid, and potential professional installation.

5. Source:

   • Salvage Yards: Can be a treasure trove, but "as-is" condition is common. Inspect thoroughly.
   • Specialty Jeep Parts Suppliers: Many vendors specialize in vintage Jeep parts, often offering tested used or rebuilt units.
   • Online Marketplaces (eBay, Craigslist, Facebook Marketplace): Offers a wide selection, but buyer beware – verify seller reputation and ask for detailed photos/videos.
   • Jeep Forums & Clubs: A great resource for finding parts from fellow enthusiasts, often with good advice and fair prices.

Practical Advice for a Successful Purchase

1. Do Your Homework: Before even looking, identify your current transmission, transfer case, and engine. Research compatible options and required adapter kits.
2. Ask Detailed Questions: For used units, inquire about:
   • The vehicle it came out of (year, make, model, engine).
   • Why it was removed.
   • Known issues (leaks, grinding, popping out of gear).
   • If it was tested (and how).
   • Mileage (if known).
3. Inspect Thoroughly (If Possible):
   • Look for cracks in the casing, stripped bolt holes.
   • Check fluid condition (shouldn’t be burnt or excessively dark).
   • Rotate input and output shafts by hand to check for smooth operation and excessive play.
   • If a manual, try to shift it through the gears.
4. Consider a Warranty: If buying rebuilt, ensure there’s a warranty. Even a short 30 or 90-day warranty provides peace of mind.
5. Factor in Shipping: Transmissions are heavy. Shipping costs can significantly add to the overall price.

Installation and Maintenance: Beyond the Purchase

Once you’ve secured your CJ-5 transmission, the journey continues with installation and ongoing maintenance.

• Professional vs. DIY: Transmission swaps can be complex, involving heavy lifting, precise alignment, and knowledge of drivetrain components. If you’re not experienced, consider professional installation.
• Required Components: Don’t forget new seals, gaskets, a fresh clutch kit (for manuals), new transmission fluid (use the correct type!), and potentially a new shifter boot and knob.
• Break-in Period: If you’ve purchased a rebuilt unit, follow the rebuilder’s recommendations for a break-in period.
• Regular Maintenance: Check fluid levels periodically and change the transmission fluid according to your vehicle’s maintenance schedule or the transmission manufacturer’s recommendations. This is the single most important step to prolonging its life.

Challenges and Solutions

Finding the perfect CJ-5 transmission can present challenges:

• Rarity of OE Parts: Some original transmissions are becoming scarce.
  • Solution: Widen your search to include reputable Jeep salvage yards, specialized vintage parts dealers, and active Jeep forums.
• Cost: Quality transmissions, especially rebuilt units or desirable swaps, can be expensive.
  • Solution: Set a realistic budget. Consider if a complete replacement is necessary or if your existing transmission can be economically rebuilt. Look for "core charges" when buying rebuilt units, as returning your old transmission can reduce the cost.
• Compatibility Issues: Ensuring all components (engine, transmission, transfer case, driveshafts) work together.
  • Solution: Thorough research using online resources, expert advice from forums, and professional guidance. Reputable adapter manufacturers provide excellent documentation.

Price Guide: Jeep CJ-5 Transmission For Sale (Estimated Ranges)

Prices for Jeep CJ-5 transmissions vary significantly based on type, condition, rarity, and seller. This table provides general estimated ranges for common options, but always verify current market prices. These prices typically do not include adapter kits, shipping, or installation costs.

Transmission Type	Condition	Estimated Price Range (USD)	Notes
OE 3-Speeds
T-90, T-86, T-14	Used (as-is)	$300 – $700	Good for period-correct restorations, but lack modern features. Condition highly variable.
T-150	Used (as-is)	$400 – $800	Common and relatively sturdy OE 3-speed.
T-90, T-86, T-14, T-150	Rebuilt	$1,200 – $2,000	Offers reliability and longevity for OE restoration.
OE 4/5-Speeds
T-176	Used (as-is)	$600 – $1,200	Highly sought-after OE 4-speed due to strength.
T-176	Rebuilt	$1,800 – $2,800	Excellent choice for strong, stock-style 4-speed.
T-4 / T-5	Used (as-is)	$400 – $900	T-5 offers overdrive, but generally less robust than T-176. Good for lighter duty.
T-4 / T-5	Rebuilt	$1,200 – $2,200	Reliable for mild use, T-5 benefits from overdrive.
OE Automatics
GM TH400	Used (as-is)	$500 – $1,000	Very strong but no overdrive. Often found in V8 CJ-5s.
GM TH400	Rebuilt	$1,500 – $2,500	Excellent durability once rebuilt.
Popular Swap Manuals
SM465, T-18	Used (as-is)	$300 – $700	Extremely robust "granny gear" transmissions. Adapters required.
SM465, T-18	Rebuilt	$1,200 – $2,200	Ideal for heavy off-road use where low gearing is prioritized over highway speed.
NV3550, AX-15	Used (tested)	$700 – $1,500	Modern 5-speeds with overdrive. Good balance of strength and highway manners. Adapters required.
NV3550, AX-15	Remanufactured	$2,000 – $3,000+	Best option for a reliable, modern 5-speed swap with overdrive.
Popular Swap Automatics
TF999 / TF904	Used (tested)	$400 – $800	Compact and reliable 3-speeds.
TF999 / TF904	Rebuilt	$1,200 – $2,000	Solid automatic choice for a compact, reliable build.
AW4	Used (tested)	$500 – $1,000	Robust 4-speed automatic with overdrive. Great for those wanting a modern auto.
AW4	Rebuilt	$1,800 – $2,800	High durability and highway friendliness for an automatic swap.

Frequently Asked Questions (FAQ) about Jeep CJ-5 Transmissions

Q1: What is the best transmission for a Jeep CJ-5?
A1: There’s no single "best" transmission; it depends entirely on your intended use. For originality, an OE T-176 or T-150 is great. For heavy off-roading, an SM465 or T-18 is hard to beat. For highway cruising and a modern feel, a 5-speed swap like an NV3550 or AX-15 is ideal.

Q2: Can I put a modern 5-speed transmission in my old CJ-5?
A2: Yes, absolutely! Swapping in a modern 5-speed like an NV3550 or AX-15 is a very popular upgrade. It provides an overdrive gear for better highway fuel economy and a quieter ride, plus generally smoother shifting. These swaps typically require an adapter kit for your engine and transfer case.

Q3: How do I know if my CJ-5 transmission needs replacing or just repair?
A3: Common signs of a failing transmission include: difficulty shifting gears, gears popping out, grinding noises, unusual vibrations, fluid leaks, or a burning smell. A professional mechanic specializing in transmissions can diagnose whether a repair (e.g., new synchros, bearings) is sufficient or if a full replacement/rebuild is necessary.

Q4: Are automatic transmissions available for CJ-5s?
A4: Yes, a few late-model CJ-5s came with the GM TH400 automatic. For swaps, popular choices include the Chrysler TF999/TF904 or the Aisin-Warner AW4, which offers overdrive.

Q5: What’s involved in swapping a transmission in a CJ-5?
A5: A transmission swap involves removing the old unit, installing the new one, ensuring proper mating with the engine and transfer case (often with adapters), connecting the shifter linkage, and potentially modifying driveshafts or crossmembers. It’s a significant mechanical undertaking that may require specialized tools and expertise.

Q6: How much does it typically cost to install a new transmission in a CJ-5?
A6: Installation costs vary widely based on labor rates, the complexity of the swap, and whether modifications (like driveshaft work) are needed. Expect labor costs to range from $500 to $1500+ for a professional installation, not including the cost of the transmission itself or any necessary adapter kits.

Conclusion

The search for a "Jeep CJ-5 Transmission For Sale" is more than just a transaction; it’s an integral part of maintaining, restoring, or upgrading a cherished piece of automotive history. By understanding the various types of transmissions available, carefully considering compatibility and condition, and approaching the purchase with informed decisions, you can ensure your CJ-5 continues to deliver reliable performance and endless adventures for years to come. Whether you opt for an authentic original or a modern performance upgrade, the right transmission will keep your classic Jeep roaring down the road or crawling up the toughest trails, embodying the spirit of freedom and capability it’s always represented.