SKU: 60356849296

Black Super Conductor Big Block Chevy '75-on, HEI - 31773

$93.57 $103.97
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Description

Black Super Conductor Big Block Chevy '75-on, HEI - 31773Overview: 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

Overview:

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) "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. The MSD's 8.5mm spark plug terminals feature Dual Crimp terminals. As the name implies, the terminals feature two crimps; one for the sleeve of the wire and another separate crimp to grasp the conductor. The MSD's 8.5mm spark plug terminals feature Dual Crimp terminals. As the name implies, the terminals feature two crimps; one for the sleeve of the wire and another separate crimp to grasp the conductor.

Features:

    Application:

    Year Make Model Submodel Engine Size
    1977 - 1980 Chevrolet C10 Suburban 4.25/8 V
    1978 GMC C25 Sierra Grande 4.25/8 V
    1977 - 1986 Chevrolet C30 4.25/8 V
    1979 - 1986 GMC K3500 4.25/8 V
    1978 GMC C25 Suburban Base 4.25/8 V
    1987 Chevrolet V30 4.25/8 CARBV
    1977 - 1986 Chevrolet C20 4.25/8 V
    1977 - 1986 Chevrolet K30 4.25/8 V
    1979 GMC C1500 4.25/8 V
    1977 - 1978 Chevrolet K5 Blazer 4.25/8 V
    1978 GMC C25 Suburban Sierra Classic 4.25/8 V
    1977 - 1986 Chevrolet C20 Suburban 4.25/8 V
    1977 - 1978 GMC C35 4.25/8 V
    1977 - 1978 GMC K25 4.25/8 V
    1985 Chevrolet K20 Suburban 4.25/8 V
    1979 - 1986 GMC C2500 Suburban 4.25/8 V
    1987 GMC R3500 4.25/8 CARBV
    1977 - 1979 Chevrolet C10 4.25/8 V
    1979 - 1986 GMC C2500 4.25/8 V
    1987 GMC V3500 4.25/8 CARBV
    1979 - 1986 GMC C3500 4.25/8 V
    1977 GMC C25 Suburban 4.25/8 V
    1978 GMC C25 Suburban Sierra Grande 4.25/8 V
    1978 GMC C25 Sierra Classic 4.25/8 V
    1980 Chevrolet C10 Cheyenne 4.25/8 V
    1978 GMC C25 High Sierra 4.25/8 V
    1977 - 1978 GMC C15 Suburban 4.25/8 V
    1977 - 1978 GMC C15 4.25/8 V
    1978 GMC C25 Suburban High Sierra 4.25/8 V
    1977 - 1978 Chevrolet K20 4.25/8 V
    1980 Chevrolet C10 Custom Deluxe 4.25/8 V
    1987 Chevrolet R30 4.25/8 CARBV
    1980 Chevrolet C10 Silverado 4.25/8 V
    1978 GMC C25 Base 4.25/8 V
    1980 Chevrolet K10 4.25/8 V
    1979 GMC C1500 Suburban 4.25/8 V
    1980 Chevrolet C10 Scottsdale 4.25/8 V
    1980 Chevrolet C10 Big Ten 4.25/8 V

    Specs:

    1 Cylinder 31”
    2 Cylinder 39”
    3 Cylinder 37”
    4 Cylinder 28”
    5 Cylinder 28”
    6 Cylinder 29”
    7 Cylinder 27”
    8 Cylinder 29”
    Brand MSD
    Emission Code 5
    Product Type Spark Plug Wires
    Warranty Limited 1 Year Warranty
    Shipping Notes
    • Free Standard Shipping on $100+ Orders to the USA.
    • Except Preorder products are shipped in 48 hours.
    • Delivery to the USA:
    1. Standard Shipping : 3-10 business days
    • If time is of the essence, please consider selecting expedited delivery for faster service.
    Exchange/Return Notes
    • We offer a 30-day return/exchange service after receiving.
    • Final sale items are not eligible for returns or exchanges.
    • To process your return/exchange, please contact us at [email protected]
    • Please click here for more details>>> Return & Exchange Policy
    SKU: 60356849296

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    4.6 ★★★★★
    Based on 1615 reviews
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    Product Reviews
    D
    Verified Purchase
    Dane W.
    Draper, US
    ★★★★★ 5
    Great plugs
    Size: 2 Pairs / 4 pcs
    These are great plugs! Worked like it should!
    WAS THIS REVIEW HELPFUL?YesReportShare
    Reviewed in the United States on December 26, 2024
    B
    Verified Purchase
    bob
    New York, US
    ★★★★★ 3
    Does the job, easy use, a bit bulky not exactly as described
    Size: 12 Pairs / 24 pcs
    Bare wire can be intolerable to work with. Banana plugs make a positive secure connection. These plugs are a touch bulky. Nice to not have to deal with small screws. Use as large of gauge wire as possible. The description says no unintentional disconnections. I beg to differ the bite of teeth aren’t as good as described. Used a 16 gauge pure copper speaker wire and a teenager taught me how secure the wire really is by tugging on the wire not the banana plug pulling the wire free. It does the job, it’s not the latest and greatest. If you need easy get these. If you want slim secure banana plugs buy the small screw type.
    WAS THIS REVIEW HELPFUL?YesReportShare
    Reviewed in the United States on July 3, 2025
    A
    Verified Purchase
    Amazon Customer
    Pawtucket, US
    ★★★★★ 5
    GET THEM!!
    Size: 12 Pairs / 24 pcs, Size: 12 Pairs / 24 pcs
    Fully gold plated inside and out! I initially got the amazon basic connectors for the same price, but was disappointed in the tiny burgundy positive label they had. It was also very dirty inside the connector and it wasn’t gold plated through out the connector. These are excellent in quality and have a bright red ban on the connector! You wont be disappointed and beats out Sewell connectors for the price!
    WAS THIS REVIEW HELPFUL?YesReportShare
    Reviewed in the United States on January 24, 2025
    M
    Verified Purchase
    Mark
    Battle Creek, US
    ★★★★★ 2
    Decent, but be careful of frequent use.
    Size: 12 Pairs / 24 pcs, Size: 12 Pairs / 24 pcs
    The looks are very nice, functional if left alone once assembled. After that I would leave them alone otherwise you risk the main male portion just coming loose of the housing, sound quality is decent, nothing to write home about, but again, not very durable. If they could fix that 1 thing, these would be very good buy and value, the rest of each plug is hefty and well made.
    WAS THIS REVIEW HELPFUL?YesReportShare
    Reviewed in the United States on January 12, 2026
    J
    Verified Purchase
    James
    Alexandria, US
    ★★★★★ 5
    Great Banana Plugs
    Size: 6 Pairs / 12 pcs
    I recently purchased these FosPower banana plugs to tidy up my speaker wiring, and they’ve been a significant improvement over bare wire ends. Installation is straightforward: strip the wire, loosen the two tiny set screws, slide the wire in, tighten everything down, and then screw the barrel back on. Once assembled, the connection feels secure and tight, making it much easier to swap gear around and reducing the risk of stray strands causing a short. The standout feature of this design is the dual set-screw clamp. It firmly grips the speaker wire without relying on the outer collar to “crush” it in place. I’m using 12-gauge wire, and it holds well for my setup. Initially, the plugs may fit snugly in some binding posts. Once seated, there’s no wobble, but it might take a bit of extra push the first time. The set screws are small, so a bit of precision is needed. Use a small flathead screwdriver and don’t over-tighten them. Overall, these plugs feel well-made, look clean once installed, and fulfill their purpose as banana plugs: making speaker connections quick, neat, and reliable.
    WAS THIS REVIEW HELPFUL?YesReportShare
    Reviewed in the United States on May 27, 2026

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