Engine Timing Set Guide for 1959-1963 Cadillac Commercial Chassis
Keep your classic Cadillac's 390 V8 engine running smoothly with a reliable timing set.
- A failing timing set on the 390 V8 engine will cause a rattling noise from the front of the engine.
- Always replace the chain and both sprockets as a complete kit; using old sprockets with a new chain will cause it to fail quickly.
- Due to the high labor costs, it is wise to replace the timing set whenever the front of the engine is disassembled for other service, like a water pump replacement.
- For this classic vehicle, a quality aftermarket brand like INA is the standard and most reliable replacement option.
Signs of a Failing Timing Set
For a vehicle of this vintage, the original timing chain and gears have likely stretched or worn. Age and mileage are the biggest factors. Keep an eye and ear out for these symptoms:
- Rattling Noise from the Front of the Engine: A loose or stretched timing chain can slap against the inside of the timing cover, creating a noticeable rattling sound, especially when the engine is first started or idling.
- Engine Misfires or Rough Running: If the chain stretches, it can jump a tooth on the gears, throwing off the engine's timing. This will cause the engine to run poorly, misfire, or lose power.
- Metal Shavings in the Engine Oil: As the chain and gears wear, tiny metal particles can flake off and end up in the oil pan. If you see metallic specks during an oil change, it's a serious warning sign that internal engine components are wearing out.
Catastrophic Failure is Possible
If a timing chain fails completely, the valves can collide with the pistons, causing catastrophic and expensive engine damage. It is crucial to address symptoms of a failing timing set immediately.
Choosing a New Aftermarket Timing Set
For a 1959-1963 Cadillac, finding a New Old Stock (NOS) OEM timing set is nearly impossible. The most practical and reliable option is a new aftermarket kit. These kits are readily available and are often included in larger engine rebuild packages.
Brand Spotlight: INA
INA is a well-known manufacturer of engine components, including timing sets. They are often a supplier of original equipment for many car manufacturers. For a classic application like the Cadillac 390 V8, an INA timing set is considered a quality replacement part that meets or exceeds original specifications. While some online discussions mention isolated issues with specific INA parts for other, unrelated vehicles, the brand generally has a strong reputation for quality.
Replace it All at Once
When replacing the timing chain, it is essential to replace the camshaft and crankshaft gears at the same time. These components wear together as a set. Installing a new chain on old, worn gears will cause the new chain to wear out very quickly. A complete timing set includes all three necessary components.
Estimated Costs for Replacement
The cost of the part itself is a small fraction of the total job cost. The majority of the expense is the labor required to access the timing set, which is located behind the engine's front cover.
| Part or Service | Estimated Cost |
|---|---|
| New Aftermarket Timing Set (INA) | $148.80 |
| Shop Labor | $1,500 - $3,000+ |
| Total Estimated Cost | $1,650 - $3,150+ |
Frequently Asked Questions (FAQ)
Are there any recalls for the timing set on a 1959-1963 Cadillac?
No, there are no recalls from the NHTSA related to the timing chain or timing set for these vehicles. Any failure is due to the age and wear of the original components.
Can I replace just the timing chain?
No. You should always replace the timing chain, crankshaft sprocket, and camshaft sprocket together as a complete set. These parts wear as a matched unit. Putting a new chain on old sprockets will lead to rapid wear and premature failure.
Is this a DIY-friendly job?
For most owners, no. Replacing the timing set is a complex job that requires significant disassembly of the front of the engine, including removing the radiator, water pump, and front engine cover. It also requires special tools and a deep understanding of engine mechanics to ensure the new set is installed with the correct timing. This job is best left to an experienced mechanic.
What engine did the 1959-1963 Commercial Chassis use?
These vehicles were equipped with the Cadillac 390 cubic inch (6.4L) V8 engine. The timing set is specific to this engine family.
Technical Specifications
OEM Part Numbers: 3704150
Engine: 390 cu in (6.4 L) OHV V8. Kit Components: Timing Chain, Camshaft Sprocket, Crankshaft Sprocket.
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The information in this article is provided for general reference and educational purposes only. Vehicle specifications, procedures, and part compatibility can vary by production date, trim level, and region. Always consult your vehicle's factory service manual and verify part numbers before purchasing or performing repairs. Safety-critical components such as airbags, seat belts, and braking systems should be installed by a qualified professional.