1956 Studebaker Power Hawk Spark Plug Wire Set Replacement Guide
Get your Studebaker V8 running smoothly with the right set of new spark plug wires.
- Symptoms of bad wires include rough idle, misfires, and hard starting.
- New aftermarket wires from a brand like Standard Motor Products are a reliable choice for the Power Hawk.
- Replacement is a simple DIY job that takes less than an hour; replace wires one at a time to maintain the correct firing order.
- Be mindful of wire routing for cylinders #3 and #5 to prevent potential crossfire issues.
Signs of Failing Spark Plug Wires
When the spark plug wires on your Power Hawk begin to fail, the symptoms are often noticeable. Because these wires are simple wear items, they will eventually need replacement due to age. Look for these common signs:
- Rough Idle: The engine may shake or vibrate more than usual when the car is stopped.
- Engine Misfires: You might feel a hesitation or stumble from the engine during acceleration or while cruising. This can sometimes be worse in damp weather.
- Hard Starting: The engine may crank for a long time before it finally starts, or it may not start at all.
- Poor Acceleration: A noticeable loss of power or a sluggish response when you press the gas pedal is a common symptom.
- Visible Damage: A visual inspection may reveal cracks, burns, or brittleness in the wire's outer insulation. In a dark garage, you might even see sparks arcing from the wires to a metal engine part.
No Recalls or Service Bulletins
Searches of the National Highway Traffic Safety Administration (NHTSA) database show no recalls or technical service bulletins (TSBs) for the spark plug wires on the 1956 Studebaker Power Hawk. This is normal for a vehicle of this era, as maintenance was covered in general service manuals.
Choosing the Right Aftermarket Wires
For a classic vehicle like a 1956 Power Hawk, finding New Old Stock (NOS) original equipment wires is nearly impossible. Aftermarket wire sets are the standard and often feature superior modern technology, such as silicone insulation, which offers better heat resistance and durability than the original 1950s materials.
Brand Quality: Standard Motor Products
Standard Motor Products (SMP), often sold as "Standard Wires," is a well-known aftermarket manufacturer that has been producing ignition parts for decades. For classic American vehicles like your Studebaker, their products are generally considered a reliable, quality choice that meets or exceeds original specifications. They are a safe and dependable option for a stock Power Hawk.
Pro Tip: Correct Wire Routing
Some Studebaker V8 owners have noted the importance of correctly routing the spark plug wires for cylinders #3 and #5. To prevent the electrical field from one wire inducing a spark in the adjacent one (known as inductive crossfire), avoid running them parallel and close to each other. Following the original wire loom separators helps prevent this potential misfire issue.
Comparing Replacement Costs
The cost for a new aftermarket spark plug wire set is reasonable. Labor costs are low because replacement is a quick job.
| Part Type | Estimated Cost |
|---|---|
| New Aftermarket Set | $40 - $154 |
| Shop Labor | $50 - $100 |
Frequently Asked Questions
Do I need special tools to replace the spark plug wires?
No special tools are required. The job can be done by hand. A little bit of dielectric grease applied to the inside of the wire boots is recommended to make installation easier and seal out moisture, but it is not mandatory.
Should I replace the wires one at a time?
Yes. To avoid mixing up the engine's firing order, it is best to replace one wire at a time. Remove the old wire, match its length to a new wire from the set, and install the new wire before moving to the next cylinder.
What does the wire diameter (7mm vs. 8mm) mean?
This refers to the thickness of the wire's insulation. A thicker 8mm wire can offer more insulation and protection against electrical arcing. However, for a stock 259 V8 engine, a quality 7mm wire set is perfectly adequate and matches the original style.
Should I also replace my spark plugs and distributor cap?
It is excellent practice to replace the spark plugs, distributor cap, and rotor at the same time as the wires. These components all wear together. A full ignition tune-up will ensure your Power Hawk runs its best.
Technical Specifications
Engine: 259ci V8 Wire Count: 9 (8 spark plug wires, 1 coil wire) Insulation Material: Silicone (modern replacement) Terminal Ends: 90-degree boots for spark plugs, socket-style for distributor cap
We Have This Part in Stock
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.