1978 GMC K25 Performance Ignition Products

Essential 1978 GMC K25 Performance Ignition Products

Accel – Custom Fit Spark Plug Wire Set (Part No.8848)

Custom Fit Spark Plug Wire Set

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$122.99
These ACCEL wire sets are custom tailored for true street and strip performance use. Features oversize 8.8 mm ultra performance wires and spark plug boots, 550 degrees Fahrenheit double silicone construction with fiberglass braid. Spiral wound steel core conductor.

Product Features:
  • 8.8mm Graphite Suppression
  • Silicone Spark Plug Boots
  • 550 Degree Double Silicone Construction
  • Fiberglass Braid
  • Carbon/Graphite Core
  • Magnetic Suppression
  • Fiberglass/Kevlar Core
  • 500 Ohms Resistance
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MSD Ignition – Wire Set; Street Fire; SBC; Socket Distributor Cap over VC (Part No.5565)

Wire Set; Street Fire; SBC; Socket Distributor Cap over VC

from

$72.99
The street fire spark plug wires feature a low resistance conductor that’s wrapped in a sleek and durable black sleeve. The terminals are covered in black boots that protect the conductor from engine heat to ensure spark delivery.

Product Features:
  • Helically wound conductor suppresses electro and radio noise
  • Kevlar core combination for great strength and durability
  • Heavy Duty Terminals For Secure Connection
  • 8mm silicone and synthetic jacket resists heat and abrasion
  • 500 Ohms/ft. Resistance For Improved Spark Delivery And Power
  • Silicone Boots Protect Against High Exhaust Temps
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MSD Ignition – Wire Set; Street Fire; SBC; Socket Cap; under Manif (Part No.5564)

Wire Set; Street Fire; SBC; Socket Cap; under Manif

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$65.99
The street fire spark plug wires feature a low resistance conductor that’s wrapped in a sleek and durable black sleeve. The terminals are covered in black boots that protect the conductor from engine heat to ensure spark delivery.

Product Features:
  • Helically wound conductor suppresses electro and radio noise
  • Kevlar core combination for great strength and durability
  • Heavy Duty Terminals For Secure Connection
  • 8mm silicone and synthetic jacket resists heat and abrasion
  • 500 Ohms/ft. Resistance For Improved Spark Delivery And Power
  • Silicone Boots Protect Against High Exhaust Temps
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Accel – Universal Fit Graphite Suppression; Spark Plug Wire Set (Part No.8026)

Universal Fit Graphite Suppression; Spark Plug Wire Set

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$128.99
These ACCEL carbon and graphite core wire sets virtually eliminate RFI noise, while providing maximum conductivity for ultimate performance in any race or street application. Double silicon insulation eliminates leakage and misfire.

Product Features:
  • Heavy Duty 8.8mm Oversized Silicone Jacket
  • 500 Ohms/ft. Of Resistance
  • 550 Degree Double Silicone Construction
  • Fiberglass Braid
  • Carbon/Graphite Core
  • Magnetic Suppression
  • Fiberglass/Kevlar Core
  • 500 Ohms Resistance
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MSD Ignition – Wire Set; Black Super Conductor; Small Block Chevy with HEI Cap (Part No.35593)

Wire Set; Black Super Conductor; Small Block Chevy with HEI Cap

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$109.99
The MSD 8.5mm super conductor wire is the performance wire. Engineered from the inside out, the 8.5 offers everything you have ever wanted in a wire; incredibly low resistance without electronic interference. In a single 12 inch length of super conductor wire there is only 40 – 50 ohms of resistance. That is the lowest resistance of any helically wound wire. To accomplish this, we use a copper alloy conductor due to it’s great voltage carrying capabilities. The low resistance results in less loss in spark energy so more reaches the spark plug. The conductor is wound extremely tight around a special center core. So tight in fact, that there is over 40 feet of conductor wrapped into a single foot of plug wire. This winding procedure, combined with a ferro-magnetic impregnated center core, produces an extremely effective electro magnetic interference (EMI) or choke. This choke, or suppression capability, keeps the EMI inside the wire where it cannot interfere with other electronics on your vehicle. The outer sleeve that surrounds the conductor assembly is just as impressive. A proprietary blend of silicone and synthetic material produce a sleeve that is highly resistant to high heat as well as abrasion and tears. Available in universal kits and bulk lengths.

Product Features:
  • Less than 50 ohms per foot for superior spark
  • Ferro-magnetic impregnated core creates an effective EMI choke
  • 40 ft. Of Conductor Wound Into A Single Foot Of Wire
  • For high EMI suppression
  • Conductor core features Dupont Kevlar material
  • Proprietary compound sleeves for resistance to high heat/abrasion
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Mallory – Distributor Wiring Harness (Part No.29349)

Distributor Wiring Harness

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$30.49


Product Features:
  • Service Part
  • Makes Connections Quick And Easy
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Mallory – Unilite Ignition Module (Part No.605)

Unilite Ignition Module

from

$85.29
Mallory’s UNILITE (R), and magnetic breaker less ignition modules are self contained module assemblies which have no moving parts to wear out. Using Mallory’s time tested breaker less ignition circuit, combined with modern surface mount thermal-clad construction, these ignition modules can drive both OEM and high performance ignition coils. For best results always use a Mallory PROMASTER coil or a Mallory chrome electronic ignition coil. These are also an excellent choice for triggering one of the Mallory HyFire series of electronic ignition controls. Hookup is as easy as a three wire connection.

Product Features:
  • Service Part
  • No Moving Parts To Wear Out
  • Self Contained Unit
  • Can Drive OEM
  • Can Drive High Performance Ignition Coils
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Accel – High Energy Ignition Coil for GM HEI – 1973-1991 (Part No.140003)

High Energy Ignition Coil for GM HEI - 1973-1991

from

$100.99
Engineered for higher energy output resulting in quicker starting, improved idle quality, crisper throttle response and more high RPM power. Compatible with both original HEI ignition systems and later model computer controlled HEI systems. No need to remove or re-time distributor. Complete with simplified ground strap, mounting screws, silicone coil gasket and carbon contact brush / spring.

Product Features:
  • 10-15% More Energy
  • Direct Plug In Replacement Direct OE Fit
  • Advanced Bobbin Technology
  • Highly Specialized Silicone Magnetic Steel Cores
  • Standard Motor Products SMP Dr-31
  • MSD 8225
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MSD Ignition – Mod HEI Dust Cover, V8 & Odd Fire V6 (Part No.8401)

Mod HEI Dust Cover, V8 & Odd Fire V6

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$72.99
Stock style replacement modified HEI coil dust cover. Used on 8 cylinder vehicles only.

Product Features:
  • Externally mounted coil
  • Increases reliability
  • Increase performance
  • High quality plastic
  • Resist spark loss
  • Use brass conductors
  • Low resistance connections
  • No modifications
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MSD Ignition – Crank Trigger Kit; Small Block Chevy; 6? Balancer (Part No.8600)

Crank Trigger Kit; Small Block Chevy; 6? Balancer

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$461.99
For a long time, racers have known that one of the best things to do to an engine to improve its performance is to stabilize the ignition timing. The MSD flying magnet crank trigger system does exactly that by using magnets embedded in an aluminum wheel. The MSD flying magnet crank trigger uses four magnets secured in the aluminum trigger wheel that pass by a stationary non-magnetic pick-up to trigger the ignition. This flying magnet design produces accurate trigger signals and the non-magnetic pick-up cannot be false triggered. Each flying magnet crank trigger includes a two-piece mounting bracket for the non-magnetic pick-up that in most cases will work on either the passenger side or driver’s side of the engine (the SB Chrysler and SB Ford brackets mount on only one side). The adjustable bracket provides a wide range of timing adjustment and spacers are included. These systems will trigger MSD 6, 7, 8 and 10 series ignitions and all MSD timing accessories.

Product Features:
  • 6.25 in. Diameter
  • Absolutely the most accurate way to trigger the ignition.
  • The non-magnetic pickup cannot be false triggered.
  • Powerful magnets are embedded in a billet aluminum trigger wheel.
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MSD Ignition – Crank Trigger Kit; Small Block Chevy (Part No.8610)

Crank Trigger Kit; Small Block Chevy

from

$443.99
For a long time, racers have known that one of the best things to do to an engine to improve its performance is to stabilize the ignition timing. The MSD flying magnet crank trigger system does exactly that by using magnets embedded in an aluminum wheel. The MSD flying magnet crank trigger uses four magnets secured in the aluminum trigger wheel that pass by a stationary non-magnetic pick-up to trigger the ignition. This flying magnet design produces accurate trigger signals and the non-magnetic pick-up cannot be false triggered. Each flying magnet crank trigger includes a two-piece mounting bracket for the non-magnetic pick-up that in most cases will work on either the passenger side or driver’s side of the engine (the SB Chrysler and SB Ford brackets mount on only one side). The adjustable bracket provides a wide range of timing adjustment and spacers are included. These systems will trigger MSD 6, 7, 8 and 10 series ignitions and all MSD timing accessories.

Product Features:
  • 7 in. Diameter
  • Absolutely the most accurate way to trigger the ignition.
  • The non-magnetic pickup cannot be false triggered.
  • Powerful magnets are embedded in a billet aluminum trigger wheel.
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Accel – Adj:Vac Adv GM V8 Hei Dist (Part No.31035)

Adj:Vac Adv GM V8 Hei Dist

from

$48.49
This unit permits a seamless wide range of adjustment to both amount and rate of ignition advance. This unit helps increase horsepower and throttle response. It provides maximum spark advance while preventing detonation or “pinging”. This kit includes an allen wrench for easy adjustment along with instructions.

Product Features:
  • Adjustable Vacuum Advance
  • Increases Horsepower And Throttle Response
  • Includes Allen Wrench For Adjustments
  • Instantly Increase Horsepower
  • Maximum Possible Spark Advance
  • Not Legal For Sale/Use In CA
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1978 GMC K25 Performance Ignition Products

Maybe you’re in the middle of a full rebuild of that 1978 GMC K25. Maybe you just need a couple of Performance Ignition Products. Either way, Advance Auto Parts has 15 different Performance Ignition Products in our inventory ranging from $30.49 to $461.99. That means you can find the exact parts or products you need to keep that 1978 GMC K25 running smoothly.

Performance Ignition Products are only as good as their brand. We stock 3 different brands to make sure you have plenty of trusted parts to choose from for your 1978 GMC K25. Accel, MSD Ignition, and Mallory are just some of the brands we stock. Search for brands you know or compare prices and reviews to help you decide!

We know you’ll find the perfect Performance Ignition Products for your 1978 GMC K25, but don’t take our word for it – read our customer ratings and reviews and buy with confidence. Out of the 88 reviews in this category, some of the top rated parts include Unilite Ignition Module with 5.0 stars and Wire Set; Street Fire; Multi-Angle plug; HEI; Universal with 4.7 stars.

So if you’re in the market for aftermarket Performance Ignition Products to keep your 1978 GMC K25 rolling for years to come, look no further. Shop online and have your products shipped direct to your door, or pick up at the nearest Advance Auto Parts location today!

Performance Ignition Products Brands To Make Your 1978 GMC K25 Last

Simple repair, complete replacement, or a full rebuild. No matter the job, your 1978 GMC K25 demands trusted brand parts and products to keep it running. Many trusted brands of Performance Ignition Products make up Advance Auto Parts’ inventory, and all are ready to help make your K25 the best it can be. Be sure to browse some of our top Performance Ignition Products brands and parts.

Popular Accel Performance Ignition Products

We carry Accel parts in our stock across Performance Coils categories, plus more. For a 1978 GMC K25, our most popular Accel Performance Ignition Products include:
High Energy Ignition Coil for GM HEI - 1973-1991
from $100.99
(8)
High Energy Ignition Coil for GM HEI – 1973-1991
Performance Coils

FAQs for 1978 GMC K25 Performance Ignition Products

What are the most purchased Performance Ignition Products for the 1978 GMC K25?

Out of 15 Performance Ignition Products for the 1978 GMC K25, the most popular in our inventory are:
Wire Set; Black Super Conductor; Small Block Chevy with HEI Cap
from $109.99
This product is not rated
Wire Set; Black Super Conductor; Small Block Chevy with HEI Cap
Performance Spark Plug Wires
Universal Fit Graphite Suppression; Spark Plug Wire Set
from $128.99
This product is not rated
Universal Fit Graphite Suppression; Spark Plug Wire Set
Performance Spark Plug Wires
Wire Set; Street Fire; Small Block Chevy 350; HEI
from $56.39
(1)
Wire Set; Street Fire; Small Block Chevy 350; HEI
Performance Spark Plug Wires

What are the top-rated 1978 GMC K25 Performance Ignition Products?

Top-rated Performance Ignition Products for your 1978 GMC K25 based on customer reviews/ratings are:
Unilite Ignition Module
from $85.29
(3)
Unilite Ignition Module
“I like the Unilite product because it is so small and compact compared to the HEI stuff I normally use. If you are restricted on space Its a great pro”
Wire Set; Street Fire; Multi-Angle plug; HEI; Universal
from $72.39
(3)
Wire Set; Street Fire; Multi-Angle plug; HEI; Universal
“GREAT PRODUCT”
Wire Set; Street Fire; SBC; Socket Distributor Cap over VC
from $72.99
(2)
Wire Set; Street Fire; SBC; Socket Distributor Cap over VC
“I exchanged the set for the correct set at local store.”