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Wake Up Your Century's Tired 3.8L V6
Mid-1980s Buick Century sedans and wagons relied on the venerable 3.8L V6 for smooth, dependable power, but decades-old ignition wiring loses conductivity and lets spark energy leak before it ever reaches the plug. The Granatelli Motor Sports GMS36-1341MPG MPG Plus Ignition Wire Set replaces that aging harness with a 0 ohm stainless steel core design, restoring stronger spark delivery and helping the engine run the way it did when it left the factory. It is a straightforward bolt-in upgrade for Buick Century owners who want more consistent combustion without touching the distributor or coil.
Key Features
- 0 ohm resistance stainless steel core for maximum spark energy transfer
- Patented protector ring reduces RFI and EMI interference (U.S. Patent #7,185,622)
- Stainless snap-lock spark plug connectors for a secure, corrosion-resistant fit
- High-temperature silicone boots rated to 500°F
- 8mm fiberglass-reinforced jacket for added abrasion and heat protection
- Direct OEM-replacement design, no cutting or splicing required
- OBD-II computer safe for seamless integration with the Century's factory ignition
- GMS36-1341MPG includes all mounting hardware needed for a complete installation
Fitment
| Year Range | Make | Model |
|---|---|---|
| 1984-1985 | Buick | Century |
Specifications
| Detail | Value |
|---|---|
| Manufacturer Part Number | GMS36-1341MPG |
| UPC | 802735022360 |
| Brand | Granatelli Motor Sports |
| Series | MPG Plus |
| Wire Core | Solid Stainless Steel, 0 Ohm Resistance |
| Jacket Diameter | 8mm, Fiberglass-Reinforced Braid |
| Boot Temperature Rating | 500°F (1200°F boots optional) |
| Condition | New |
What's Included
- Complete set of GMS36-1341MPG spark plug wires sized for the Century's 3.8L V6 engine
- Stainless snap-lock terminals pre-installed at each end
- Silicone boots for distributor cap and spark plug ends
- All hardware needed for a bolt-in installation
About Granatelli Motor Sports
Granatelli Motor Sports has built performance ignition components for street cars and race cars for decades. The MPG Plus line, including the GMS36-1341MPG, brings the same 0 ohm core technology used in the company's racing products to everyday classics like the Buick Century, giving owners a factory-style fit with meaningfully better electrical conductivity than aging OEM wires.
FAQ
What is the GMS36-1341MPG?The GMS36-1341MPG is a Granatelli Motor Sports MPG Plus ignition wire set built specifically for the 1984-1985 Buick Century with the 3.8L V6 engine. It uses a 0 ohm stainless steel core and RFI/EMI-suppressing protector ring to deliver stronger spark energy than the factory wires.
Is this listing really for a Buick Century, not a "Buck" Century?Yes, this is a genuine Buick Century application. The GMS36-1341MPG is engineered specifically for the 1984-1985 Buick Century's 3.8L V6 engine.
Do I need any special tools to install these wires?No special tools are required. Basic hand tools and about 30-45 minutes are enough for most home mechanics to complete the swap.
Will the GMS36-1341MPG trigger a check engine light?No. The wires are OBD-II computer safe and designed to work seamlessly with the Century's factory ignition system.
What warranty comes with the GMS36-1341MPG?Granatelli Motor Sports backs the MPG Plus wire sets with a limited warranty against manufacturing defects. Contact Granatelli customer support directly for full warranty terms on your specific order.
Is this a genuine OEM part or an aftermarket upgrade?The GMS36-1341MPG is an aftermarket performance upgrade, not an OEM replacement part. It is engineered to exceed original equipment specifications for durability and conductivity.
Will these wires work if my Century has a mild engine modification?Yes. The low-resistance design works well with naturally aspirated engines and also holds up to modest bolt-on modifications like a freer-flowing exhaust or intake.
How do I avoid mixing up cylinders during installation?Replace and route the GMS36-1341MPG wires one at a time, moving from the old harness to the new set, so each wire keeps its correct length and cylinder position.
Install Instructions
- Allow the engine to cool completely before beginning work.
- Disconnect the negative battery terminal.
- Starting with one cylinder at a time, remove the factory wire from the spark plug and distributor cap.
- Route the new GMS36-1341MPG wire along the same path as the factory wire, keeping it away from exhaust manifolds.
- Seat the spark plug boot firmly onto the spark plug until it clicks into place.
- Seat the distributor cap end firmly into the correct terminal position.
- Repeat for each remaining cylinder, replacing one wire at a time to avoid cross-wiring cylinders.
- Reconnect the negative battery terminal and start the engine to confirm smooth idle and proper firing.
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Granatelli Motor Sports carries the legacy of the legendary Granatelli racing family into the performance aftermarket, producing ignition systems, performance filters, and engine upgrades that carry the heritage of a family that won the Indianapolis 500 and competed at the highest levels of American motorsport for decades. The brand is particularly known for its high-performance spiral-wound ignition wires that dramatically reduce radio frequency interference and improve spark delivery in high-compression and modified engine applications. Granatelli products cover a wide range of domestic V8 platforms including GM LS and small-block, Ford Modular, and Chrysler Hemi engines, as well as import performance applications where quality ignition components make a measurable difference in power delivery and consistency. The combination of racing heritage and practical performance engineering makes Granatelli Motor Sports a respected name among serious enthusiasts. Popular Upgrades Granatell...
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