What are the most common problems with the 1973 Ford Gran Torino engine?

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Accepted Answer

The 1973 Ford Gran Torino's 351 V8 engine (H-Code) has several well-documented issues that owners commonly encounter:

**Top Engine Problems:**

1. **Carburetor Issues** - The stock Motorcraft 2150 2-barrel carburetor is notorious for rough idle, stalling, and poor fuel economy. Common culprits include clogged idle circuits, power valve failures, and choke problems. The good news is that this particular Gran Torino already has an Edelbrock carburetor upgrade, which eliminates many of these factory carb issues.

2. **Timing Chain Wear** - The original nylon-coated timing gears are prone to premature failure, especially after 80,000+ miles. The nylon teeth can strip, causing timing to jump and potentially damaging valves. This is a critical maintenance item that should be checked.

3. **Cooling System Inadequacy** - These heavy cars strain the cooling system, leading to overheating issues, particularly with the 351 Cleveland version. The problem is compounded by the small radiator and marginal water pump flow. Regular cooling system maintenance is essential.

4. **Exhaust Manifold Cracking** - Both 351 Windsor and Cleveland engines suffer from cracked exhaust manifolds, especially on the right side. This creates exhaust leaks that sound like ticking and can damage engine valves over time.

5. **Ignition System Problems** - 1973 was the first year for Ford's Duraspark electronic ignition, which while more reliable than points, can still have module failures and pickup coil issues as it ages.

**Transmission Concerns:**
The FMX 3-speed automatic, while durable, commonly develops front pump seal leaks, governor sticking (causing harsh shifts), and valve body wear that affects shift quality at around 90,000+ miles.

**The Silver Lining:**
This particular Gran Torino has already addressed several factory weaknesses - the Edelbrock carb and intake eliminate the troublesome Motorcraft carb issues, and the dual exhaust with glasspacks improve breathing. However, you'll still want to verify the timing chain has been replaced and keep an eye on cooling system health.

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Lot 1173-SAN: 1973 Ford Gran Torino

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Lot 1173-SAN: 1973 Ford Gran Torino

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