INDIAN 102743 American Engine Drive Gear AMI-50 13T

( Manufacturer Part Number: 102743 ), ( Part Type: Engine Drive Gear ), ( Compatible Model: Ami50 ), ( Universal Fitment: No ), ( Vintage Part: Yes ), ( Compatible Year: 1980, 1979, 1978 ), ( Country Of Origin: United States )

Review INDIAN Oem American Engine Main Primary Drive Gear 13t fits MOPED 1979

The **1979 American Motors Corporation (AMC) AMI-50 13-tooth American Engine Drive Gear** (part number **102743**) is a meticulously crafted, high-performance transmission component designed specifically for the iconic AMC AMI-50, a legendary off-road and utility vehicle renowned for its durability and adaptability in rugged terrain. This 13-tooth drive gear is a critical element of the AMI-50 s American Engine Drive (AED) system, a proprietary power transfer mechanism that enhances traction and torque delivery to the wheels, making it ideal for heavy-duty applications such as farming, construction, or extreme off-roading. Engineered from high-strength, heat-treated alloy steel, this gear is precision-machined to exacting tolerances to ensure seamless engagement with the transfer case and axle, minimizing wear and maximizing efficiency. Its robust design incorporates a hardened tooth profile and optimized gear ratio, allowing for superior load distribution and reduced backlash, which is essential for maintaining consistent power transfer under demanding conditions. The gear s compact yet sturdy construction is further complemented by a polished finish in critical areas, reducing friction and extending the lifespan of both the gear itself and the surrounding drivetrain components. Whether used in original equipment applications or as a high-quality replacement for restored AMI-50 models, this gear is a testament to AMC s engineering prowess, offering unmatched reliability for those seeking to harness the full potential of their vehicle s off-road capabilities. Its compatibility with the AMI-50 s American Engine Drive system ensures that enthusiasts and professionals alike can maintain peak performance, whether tackling rough trails, hauling heavy loads, or simply preserving the integrity of one of America s most enduring off-road workhorses.

### **Pros and Cons of Buying a 1979 AMC A/MI-50 American Engine Drive Gear (13T)**

1. **Rarity and Collectibility** The AMC A/MI-50 is a highly sought-after performance part, especially in the aftermarket tuning community. Its unique design and historical significance make it a desirable component for enthusiasts.

2. **Performance Potential** The A/MI-50 is a high-performance automatic transmission designed for heavy-duty applications, including muscle cars and drag racing. With the correct engine and modifications, it can deliver strong power delivery, especially in high-torque scenarios.

3. **Durability and Strength** Built with heavy-duty components, the A/MI-50 is known for its robust construction, including a reinforced torque converter housing and strong planetary gears. This makes it suitable for high-stress applications if properly maintained.

4. **Compatibility with Classic Engines** It was originally designed to work with AMC s high-performance engines (such as the 360 V8, 401 V8, or 304 V8 in later models). It can also be adapted to other engines with proper modifications, including some Ford and Chevrolet V8s.

5. **Aftermarket Support** Due to its popularity, there is a strong aftermarket presence, including rebuild kits, gaskets, and performance upgrades. This makes maintenance and upgrades more accessible than with some rarer transmissions.

6. **Potential for Modifications** Enthusiasts can upgrade the A/MI-50 with performance clutch packs, stronger planetary gears, or even convert it to a limited-slip differential (LSD) setup for better traction.

7. **Historical Significance** As part of AMC s high-performance lineup, owning an A/MI-50 connects you to a niche but passionate community of classic car and performance enthusiasts.

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1. **High Cost** Due to its rarity, an original A/MI-50 in good condition can be expensive, often costing **$1,500 $3,000 **, depending on condition and demand. Rebuilding or restoring one can add significant costs.

2. **Limited Availability** Finding a fully functional A/MI-50 in good condition can be difficult. Many units may require extensive rebuilding, and not all mechanics specialize in AMC transmissions.

3. **Complexity and Maintenance** The A/MI-50 is not a simple transmission to work on. It requires specialized knowledge, tools, and parts (such as unique gaskets, seals, and torque converter housings). Rebuilding it improperly can lead to failure.

4. **Compatibility Issues** While it works well with AMC engines, adapting it to other engines (e.g., Ford, Chevy) may require significant modifications, including drivetrain adjustments, torque converter selection, and possibly even transmission case machining.

5. **Potential for Hidden Damage** Many older A/MI-50 units may have internal wear (such as worn planetary gears, clutch packs, or bearing failures) that isn t immediately visible. A thorough inspection or rebuild is often necessary before purchase.

6. **Limited Modern Support** Unlike more common transmissions (e.g., Ford C6, GM TH350), finding modern replacement parts or technicians familiar with the A/MI-50 can be challenging.

7. **Weight and Space Constraints** The A/MI-50 is a heavy transmission, which may require reinforcement to the vehicle s frame or drivetrain. Installation can be labor-intensive, especially in older or modified vehicles.

8. **Reliability Concerns Without Proper Care** If not maintained correctly (e.g., regular fluid changes, clutch adjustments, and inspections), the A/MI-50 can develop internal failures, leading to costly repairs.

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The **1979 AMC A/MI-50 with a 13T gearset** is a **highly desirable but complex** transmission choice. It offers **exceptional performance potential** for enthusiasts willing to invest time and money into its maintenance and adaptation. However, its **high cost, rarity, and technical challenges** make it a **specialized purchase** rather than a practical option for casual drivers.

If you are an **AMC performance enthusiast, a drag racer, or a collector** with the resources to properly maintain and modify it, the A/MI-50 can be a **fantastic addition** to your vehicle. For most other buyers, a **more common high-performance transmission** (such as a Ford C6, GM TH400, or even a modern Tremec Tremec) may offer better reliability and accessibility.

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- You have **experience with manual transmissions or heavy-duty automatics**.

- You are **prepared to invest in a rebuild or restoration** (budget **$2,000 $4,000 ** for a complete overhaul).

- You have a **vehicle that can properly support its weight and torque demands** (e.g., a reinforced drivetrain).

- You are **committed to the AMC performance community** and enjoy the challenge of working with a rare part.

- You are looking for a **reliable, off-the-shelf transmission** with minimal hassle.

- You do not have access to **specialized tools or mechanics** familiar with AMC transmissions.

- Your budget is tight, as the **long-term costs of maintenance and potential repairs** can be high.

For most buyers, a **well-maintained used high-performance automatic** (such as a **Ford C6, GM TH400, or even a modern AOD/T56**) would be a **more practical and cost-effective** choice while still delivering strong performance. However, if you are **passionate about AMC muscle cars and willing to put in the work**, the A/MI-50 remains one of the most **exciting and rewarding** transmissions to own.

Details:

This is the factory-original 13-tooth steel gear required for primary transmission assembly. It is a direct plug-and-play replacement for any AMI-50 engine from the late 70s. The teeth show minimal wear, ensuring a smooth and quiet mesh with the clutch basket. This gear has been thoroughly cleaned and inspected for integrity.

13-Tooth Profile: Correct factory ratio for the AMI-50 series. Up for sale is an extremely rare OEM Main Drive Gear, removed from a 1979 Indian AMI-50 American Moped. If you are rebuilding one of these rare engines, know that internal parts no longer in production. Features: Authentic Indian AMI Part: Not a cross-fit from any other engine.

Verified Key way: Ensures a secure, play-free lock onto the shaft.

part #: 102743 prices

• $199.99-$299.00

specifications cyclevintagee:

• for models: Moped
• for makes: Indian
• mpn: 102743
• part type: Engine Drive Gear
• compatible model: Ami50
• universal fitment: No
• vintage part: Yes
• compatible year: 1980, 1979, 1978
• country of origin: United States

general cyclevintagee:

• Parts Accessories > Motorcycle Scooter Parts Accessories > Other Motorcycle Scooter Parts Accessories
• condition: Used

payments cyclevintagee:

• credit card: Mastercard
• other
• wallet: Paypal

shipping cyclevintagee:

• service: FedEx Ground Economy, USPS Ground Advantage, UPS Ground Saver
• cost: $6.90
• class: Economy, Standard
• type: Calculated
• carrier: FedEx, USPS, UPS
• transit: 4-9 Days

returns cyclevintagee:

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

seller cyclevintagee:

• rating: 99.6%
• # reviews: 475
• city: Spring Hill, Florida

offer cyclevintagee:

• sold: 0
• best offers: True
• started: May 2, 2026
• options: Ship-to-home
• availability: In Stock
• quantity: 1

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