Spark Plug Wire Set for 1987 Chevrolet R30 & More - MSD 31779

$264.99

Part number: 31779

UPC: 085132317790

Condition: New

Weight: 2.25 LBS

Item Package Quantity: 1

$264.99

Current Stock: 10

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MSD Spark Plug Wire Set P/N:31779

$264.99

Description

MSD 31779 spark plug wire set for the 1987 Chevrolet R30 V8 7.4L and other vehicles carries high-voltage current from the ignition to the spark plugs. These MSD IGNITION spark plug wires are made for Chevy Big Block engines and are pre-cut to exact specifications.

Copper alloy Super Conductor Wire with 40 - 50 ohms of resistance per 12 inch length, so less spark energy is lost
Tightly wound conductor over a ferro-magnetic impregnated center core acts as an EMI choke that keeps interference away from other electronics
Sleeve of a proprietary silicone and synthetic blend that resists high heat, abrasion and tears
8.5mm spark plug terminals with Dual Crimp design: one crimp grips the sleeve, a second grips the conductor

Quick facts

Part: MSD 31779 spark plug wire set
Fits: 1987 Chevrolet R30 V8 7.4L and other vehicles

A misfire, rough idle or hard starting can mean worn wires. Spark plugs, a distributor cap and rotor, or the coil can be behind a misfire or rough idle too, so find the cause before you buy wires.

Fits

A custom-fit wire set for Chevy Big Block engines, it fits the 1987 Chevrolet R30 V8 7.4L, the 1987 Chevrolet V30 V8 7.4L, the 1987 GMC R3500 V8 7.4L and other vehicles. The 1987 GMC R3500 V8 7.4L takes one set.

Specifications

Fit and size

Engine: Chevy Big Block
Quantity per vehicle: 1
Spark plug terminal size: 8.5 mm

Build and materials

Boot type: HEI boot
Color: Red
Terminal style: Dual Crimp
Conductor: copper alloy
Sleeve: silicone and synthetic blend
Country of origin: Mexico

Manufacturer's description

Product specs

Vehicles it fits

Interchange numbers

Buyer's Q&A

Frequently Asked Questions

Is this MSD IGNITION spark plug wire set right for the 1987 GMC R3500 V8 7.4L?

Yes, MSD 31779 fits the 1987 GMC R3500 V8 7.4L. If your truck is a different model, look up your own year and engine in the "Vehicles it fits" section.

What resistance do these spark plug wires have?

The Super Conductor Wire in MSD 31779 has 40 - 50 ohms of resistance in a single 12 inch length, with a copper alloy conductor.

Do the MSD 31779 wires come with HEI boots?

Yes. This red wire set has HEI boots and 8.5mm Dual Crimp spark plug terminals.

Will these wires interfere with other electronics on my truck?

The ferro-magnetic impregnated center core works as an EMI choke, which keeps interference inside the wire and away from other electronics.

How can I tell if my spark plug wires are worn out?

With the engine off and cool, look for a cracked or burnt sleeve, or corroded terminals. A shop can also test the wires' resistance.