1978 Mercury Grand Marquis Performance Distributors

Essential 1978 Mercury Grand Marquis Performance Distributors

Mr. Gasket – Chrome Distributor Hold-Down Clamp (Part No.2502)

Chrome Distributor Hold-Down Clamp

from

$13.29
Competition design uses a stud, washer & nut to secure the clamp rather than a bolt. The clamp itself is also chromed. Fits 1962-2001 Small Block Ford V8s, including both Windsor and Cleveland as well as Ford 385 series 429/460 big blocks including Boss models.

Product Features:
  • Eliminates bolt in favor of stud mount design
  • Chrome plated
  • Ideal For Ignition Distributor
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Competition Cams – .530" I.D. Composite Distributor Gear for Ford 302-351W (Part No.35100)

.530" I.D. Composite Distributor Gear for Ford 302-351W

from

$143.99
COMP Cams Composite Distributor Gears have undergone stringent testing in various applications with positive results. These super tough gears show great promise in solving the wear issues associated with bronze gears in racing applications. They are available in several shaft diameters for popular street and race applications.

Product Features:
  • Fits .530″ Shaft Diameter, Small Block Ford
  • Manufactured from a super-strong composite material
  • 300% increased durability over bronze distributor gears when used with steel camshafts
  • Tested and available in several shaft diameters for popular street and race applications
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Mallory – Distributor Drive Gear (Part No.29420)

Distributor Drive Gear

from

$73.29
Mallory distributor gears are precision machined from alloy steel in our factory to exact original equipment specs. For use with cast flat tappet hydraulic/mechanical cams and austempered ductile iron roller cams.

Product Features:
  • Replacement Distributor Gear
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Accel – High Performance Distributor Cap & Rotor Kit with Gray Finish (Part No.8234)

High Performance Distributor Cap & Rotor Kit with Gray Finish

from

$54.39
ACCEL cap and rotor kits offer superior protection from “arc-thru” and crossfire. Features 60k V-rated alkyd compound, stress-relieved at molding to ensure stability. Brass inserts and steel rotor springs provide for high spark energy flow.

Product Features:
  • See catalog for application information
  • Offers Superior Protection From Arc-Thru and Crossfire
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Accel – High-Performance Distributor Cap & Rotor Kit (Part No.8233)

High-Performance Distributor Cap & Rotor Kit

from

$53.09
ACCEL cap and rotor kits offer superior protection from “arc-thru” and crossfire. Features 60k V-rated alkyd compound, stress-relieved at molding to ensure stability. Brass inserts and steel rotor springs provide for high spark energy flow.

Product Features:
  • Features Protection From Arc Thru And Crossfire
  • Features 60k V Rated Alkyd Compound
  • Brass Terminals Inserts And Steel Rotor Springs
  • High Spark Energy Flow
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MSD Ignition – Distributor Cap/Rotor Kit; Ford Duraspark (Part No.8450)

Distributor Cap/Rotor Kit; Ford Duraspark

from

$56.99
The cap and rotor of any ignition system must be considered maintenance items. Just as you change the oil and filter of your car, you should always replace the cap and rotor as a set. To make things easy, we now offer these cap and rotor replacement kits.

Product Features:
  • Designed w/Performance In Mind
  • High Quality Material
  • Stainless Terminals
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MSD Ignition – Cap/Rotor Kit; MSD Style; (PN 8408; PN 8423) (Part No.84085)

Cap/Rotor Kit; MSD Style; (PN 8408; PN 8423)

from

$60.29
The cap and rotor of any ignition system must be considered maintenance items. Just as you change the oil and filter of your car, you should always replace the cap and rotor as a set. To make things easy, we now offer these cap and rotor replacement kits.

Product Features:
  • Injection Molded Housing From Dupont Material
  • Extreme Strength; High Dielectric Properties
  • Designed w/Performance In Mind
  • High Quality; Voltage Insulating Material
  • Stainless Steel Rotor Tip Design
  • Resist Carbon Tracking
  • Max Voltage Transfer
  • Stainless Terminals
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MSD Ignition – Distributor Cap and Rotor Kit; MSD/Ford V8; 85-95 (Part No.8482)

Distributor Cap and Rotor Kit; MSD/Ford V8; 85-95

from

$52.99
The cap and rotor of any ignition system must be considered maintenance items. Just as you change the oil and filter of your car, you should always replace the cap and rotor as a set. To make things easy, we now offer these cap and rotor replacement kits.

Product Features:
  • Rynite Injection Molded Caps And Retainers
  • Designed w/Performance In Mind
  • High Quality; Voltage Insulating Material
  • Stainless Terminals
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MSD Ignition – Distributor; Ford 289/302; Vacuum Advance (Part No.8479)

Distributor; Ford 289/302; Vacuum Advance

from

$494.99
The street pro-billet distributors are the perfect choice for powerful engines that see plenty of street time. The street models share the same features as the small diameter models shown above, plus feature a vacuum advance. This canister provides improved economy and an accurate mechanical advance lets you dial-in an advance curve to match your driving needs. A magnetic pick-up produces accurate trigger signals that remain stable throughout the entire rpm range of your engine and is completely maintenance-free.

Product Features:
  • Billet housing 5/8 in. smaller dia. than stock Ford distributors
  • CARB E.O. Approved
  • Easy-to-adjust mech. advance w/supplied springs and stop bushings
  • Vacuum advance canister for improved economy (can be locked out)
  • CNC machined billet aluminum housing and billet aluminum base
  • Maintenance-free magnetic pickup and precision reluctor
  • Creates stable trigger signals throughout the rpm range
  • QPQ coated polished steel shaft; guided by sealed ball bearings
  • Advance plate and weights are fine blanked from chrome moly steel
  • QPQ coated for friction reduction
  • Mech. advance assem. can be locked out for crank trigger systems
  • Advance weight pins are staked and tig welded to the plate
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Mallory – Unilite Electronic Ignition Distributor Series 37 (Part No.3755401)

Unilite Electronic Ignition Distributor Series 37

from

$538.99
The industry standard with adjustable mechanical advance curve. Triggered by photo-optic infrared LED system. Improved combustion efficiency and economy, increased spark plug life and cold weather starting, and maintenance free operation.

Product Features:
  • Improved Combustion And Economy
  • Increased Spark Plug Life
  • Improved Cold Weather Starting
  • Maintenance Free Operation
  • Accurate Spark Timing
  • Self-Lubricating Bushings
  • Years Of Trouble-Free Service
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MSD Ignition – Distributor; Ford 289/302; Ready-to-Run; with Steel Gear (Part No.83521)

Distributor; Ford 289/302; Ready-to-Run; with Steel Gear

from

$664.99
MSD’s Ready-to-Run Ford distributors are the perfect upgrade for bulky Duraspark systems or ancient breaker point models. All you need to do is drop it in the engine, connect three wires and fire the engine. Each distributor features an ignition module that produces a powerful inductive spark to improve combustion of the fuel mixture resulting in quick starts, smooth idle and increased performance. The billet aluminum housings of these distributors are 5/8 In. smaller in diameter to accommodate induction setups and tight engine compartments. A maintenance-free magnetic pick-up is responsible for triggering the high voltage sparks while a sealed ball bearing guides an oversized shaft. Beneath the bolt down cap and MSD race rotor you’ll find MSD’s accurate mechanical advance assembly. Different advance springs and stop bushings are supplied so you can easily tune a curve to match your needs. Plus, there is a vacuum advance canister to increase economy on long drives.

Product Features:
  • Equipped w/Steel Gear
  • CARB E.O. Approved
  • Does not require an MSD Ignition Control
  • Supplied w/small dia. cap w/HEI style terminals; race and rotor
  • Will accept PN[8441] Cap-A-Dapt
  • Nylon pads ensure smooth operation of the advance weights
  • Advance weight pins are staked and tig welded to the plate
  • Mech. advance assem. can be locked out for crank trigger systems
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MSD Ignition – Distributor; Ford 351W; Vacuum Advance (Part No.8478)

Distributor; Ford 351W; Vacuum Advance

from

$653.99
The street pro-billet distributors are the perfect choice for powerful engines that see plenty of street time. The street models share the same features as the small diameter models shown above, plus feature a vacuum advance. This canister provides improved economy and an accurate mechanical advance lets you dial-in an advance curve to match your driving needs. A magnetic pick-up produces accurate trigger signals that remain stable throughout the entire rpm range of your engine and is completely maintenance-free.

Product Features:
  • Billet housing 5/8 in. smaller dia. than stock Ford distributors
  • CARB E.O. Approved
  • Easy-to-adjust mech. advance w/supplied springs and stop bushings
  • Vacuum advance canister for improved economy (can be locked out)
  • CNC machined billet aluminum housing and billet aluminum base
  • Maintenance-free magnetic pickup and precision reluctor
  • Creates stable trigger signals throughout the rpm range
  • QPQ coated polished steel shaft; guided by sealed ball bearings
  • Advance plate and weights are fine blanked from chrome moly steel
  • QPQ coated for friction reduction
  • Mech. advance assem. can be locked out for crank trigger systems
  • Advance weight pins are staked and tig welded to the plate
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MSD Ignition – Distributor; Ford 351W; Ready-to-Run; with Steel Gear (Part No.83541)

Distributor; Ford 351W; Ready-to-Run; with Steel Gear

from

$691.99
MSD’s Ready-to-Run Ford distributors are the perfect upgrade for bulky Duraspark systems or ancient breaker point models. All you need to do is drop it in the engine, connect three wires and fire the engine. Each distributor features an ignition module that produces a powerful inductive spark to improve combustion of the fuel mixture resulting in quick starts, smooth idle and increased performance. The billet aluminum housings of these distributors are 5/8 In. smaller in diameter to accommodate induction setups and tight engine compartments. A maintenance-free magnetic pick-up is responsible for triggering the high voltage sparks while a sealed ball bearing guides an oversized shaft. Beneath the bolt down cap and MSD race rotor you’ll find MSD’s accurate mechanical advance assembly. Different advance springs and stop bushings are supplied so you can easily tune a curve to match your needs. Plus, there is a vacuum advance canister to increase economy on long drives.

Product Features:
  • Equipped w/Steel Gear
  • CARB E.O. Approved
  • Does not require an MSD Ignition Control
  • Supplied w/small dia. cap w/HEI style terminals; race and rotor
  • Will accept PN[8441] Cap-A-Dapt
  • Nylon pads ensure smooth operation of the advance weights
  • Advance weight pins are staked and tig welded to the plate
  • Mech. advance assem. can be locked out for crank trigger systems
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MSD Ignition – Distributor; Ford 5.0L Mustang; with Module; 86-93 (Part No.8456)

Distributor; Ford 5.0L Mustang; with Module; 86-93

from

$457.99
When you start making serious power with your EFI Ford, the stock distributor shaft is one of the weak links of the engine. These Pro-Billet models answer the need for an affordable replacement in a strong and great looking package. Each distributor starts as a solid billet that is secured into a state-of-the art computer numerical control (CNC) machine where it is transformed into a precision housing. Inside each housing there is a sealed ball bearing at the top of the shaft. This design is responsible for accurately guiding the oversized polished steel shaft throughout the entire RPM range of your engine. The shaft is also quip-coated for friction reduction and corrosion resistance. The Pro-Billet distributors use a stock-style trigger pick-up to accept factory connectors. For installation, you simply remove the stock distributor and bolt the Pro-Billet MSD in. Place! Each model is supplied with a high-quality cap with brass terminals for full spark delivery, heavy-duty rotor.

Product Features:
  • Increased outer hardened layer thickness (RC 55-60)
  • Micro Polished Surface For Smooth Contact
  • Proprietary formulated ductile iron.
  • Melonite QPQ coated reduces friction and initial wear
  • Interstitial carbide improves wear resistance/running properties
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MSD Ignition – Distributor Cap; Ford HEI; Black (Part No.84083)

Distributor Cap; Ford HEI; Black

from

$61.19
All the quality and performance you’ve come to expect from MSD is now available in black. Our customers have requested black parts for their builds so we’ve answered with the addition of several black distributor caps and cap and rotor kits. The black parts are built to the exact specifications of the traditional MSD red components. If you’re looking to change up the look under the hood of your street machine, off-road rig or race car; check out the complete line of MSD black components.

Product Features:
  • Injection Molded From DuPont Rynite Material
  • Extreme strength; high dielectric properties
  • Designed with performance in mind
  • High quality; voltage insulating material
  • Brass terminals
  • Black in color
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Accel – Rotor (Part No.130224)

Rotor

from

$17.88
Regain horsepower and economy for your street machine with a new ACCEL performance rotor. ACCEL’s high quality manufacturing process results in rotors offering superior protection from arc-thru and crossfire.

Product Features:
  • Racing Distributor Rotor
  • Standard Height Rotor
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MSD Ignition – Rotor Assembly; Chevy V8 Cap-A-Dapt (Part No.8421)

Rotor Assembly; Chevy V8 Cap-A-Dapt

from

$60.99
MSD Ignition is a company built on Customer Satisfaction and Service. That is why all of MSD products go through regimented test procedures before they are ever packaged and shipped. MSD stands behind its products for one full year after purchase

Product Features:
  • Rotor phasing can be adjusted.
  • Ideal When Atomic TBI Is Controlling The Timing
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1978 Mercury Grand Marquis Performance Distributors

Maybe you’re in the middle of a full rebuild of that 1978 Mercury Grand Marquis. Maybe you just need a couple of Performance Distributors. Either way, Advance Auto Parts has 10 different Performance Distributors in our inventory ranging from $13.29 to $691.99. That means you can find the exact parts or products you need to keep that 1978 Mercury Grand Marquis running smoothly.

Performance Distributors 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 Mercury Grand Marquis. MSD Ignition, Mr. Gasket, 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 Distributors for your 1978 Mercury Grand Marquis, but don’t take our word for it – read our customer ratings and reviews and buy with confidence.

So if you’re in the market for aftermarket Performance Distributors to keep your 1978 Mercury Grand Marquis 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 Distributors Brands To Make Your 1978 Mercury Grand Marquis Last

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

Popular MSD Ignition Performance Distributors

We carry MSD Ignition parts in our stock across Performance Distributor Cap and Rotor Kits categories, plus more. For a 1978 Mercury Grand Marquis, our most popular MSD Ignition Performance Distributors include:
Cap/Rotor Kit; MSD Style; (PN 8408; PN 8423)
from $60.29
(1)
Cap/Rotor Kit; MSD Style; (PN 8408; PN 8423)
Performance Distributor Cap and Rotor Kits

FAQs for 1978 Mercury Grand Marquis Performance Distributors

What are the most purchased Performance Distributors for the 1978 Mercury Grand Marquis?

Out of 10 Performance Distributors for the 1978 Mercury Grand Marquis, the most popular in our inventory are:
Distributor Cap/Rotor Kit; Ford Duraspark
from $56.99
This product is not rated
Distributor Cap/Rotor Kit; Ford Duraspark
Performance Distributor Cap and Rotor Kits
Chrome Distributor Hold-Down Clamp
from $13.29
This product is not rated
Chrome Distributor Hold-Down Clamp
Performance Distributor Components
Distributor Cap; Ford HEI; Black
from $61.19
This product is not rated
Distributor Cap; Ford HEI; Black
Performance Distributor Caps