Best Spark Plugs For Small Block Chevy: image
Editor's Pick

NGK Iridium IX Spark Plugs are the most technologically advanced high performance spark plugs available in the world. The plugs feature a tapered ground electrode to increase flame kernel expansion and provide long-lasting power. They have been designed for use in turbocharged engines, which require higher temperatures than conventional combustion engines. The plugs can also be used in supercars. Notably, they were launched at an Rallye event on Sunday.

Best Price

YT133-4PK High Performance Racing Non-Resistor Spark Plug. The plug has been designed with an anti-corrosive nickel plating for improved ignitability and less pre-ignition. The plug is used in Formula One, Formula One, Formula One and Formula One cars. The plug can be used on any vehicle to provide maximum performance. Not recommended for use under extreme temperatures. Not recommended for racing purposes.

Most Discussed

E3.42 spark plug, which is designed to increase power and reduce fuel consumption, has a life of over 10 years. It features a full-size center electrode with a taper seat 5/8-inch hex size. The plug’s weight is less than the weight of a car engine. It can be used in diesel or petrol engines. The plug comes with a five-year limited warranty. Notably, it was introduced in 1991.

Best Spark Plugs For Small Block Chevy

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Top 10 Best Spark Plugs For Small Block Chevy

1

E3 Spark Plugs E3.42 Automotive Spark Plug, Pack of 1

306 ratings | 15 offers | 306 Reviews
Price: $6.49$27.16
Why we chose it
  • FOR OPTIMAL PERFORMANCE: Automotive spark plug that fits a variety of domestic applications, designed to increase power, reduce fuel consumption, and improve hydrocarbon emissions
  • WHAT’S INCLUDED: One (1) E3.42 spark plug. Features 14mm thread diameter 0.460-inch thread reach plug with taper seat 5/8-inch hex size
  • INCREASED DURABILITY: Designed with colder heat ranges to enable performance modifications, and contains Yttrium-enhanced alloy for up to 8% reduction in side wire temperature for less pre-ignition
  • PATENTED TECHNOLOGY: DiamondFIRE ground electrode is secured to the shell with 3 legs that help facilitate excellent heat transfer and increase turbulence in the cylinder
  • WARRANTY: Often used for domestics. Unique ground electrode and full-size center electrode provides optimal performance guaranteed for five years or 100,000 miles
E3 Spark Plugs E3.42 Automotive Spark Plug, Pack of 1: image
90%
customers recommend this product
4.5/ 5
Mileage4.5
Longevity4.5
Value for money4.3
2
Why we chose it
  • Pure alumina silicate ceramic insulator, provides superior strength and better heat transfer. Copper core aids in heat removal. Triple seals prevent leakage
  • Trivalent metal plating provides superior anti-corrosion and anti-seizing properties. Corrugated ribs prevent flashover.
  • Engine Family Chevy small block Gen I
  • Engine V8, Engine Size 5.7L/350
  • Sold In 8 Pack
NGK Standard Series Spark Plug BR6S (8 Pack) for CHEVROLET C10 SUBURBAN 1969-1970 5.7L/350: image
50%
customers recommend this product
3/ 5
3
Why we chose it
  • contains an yttrium-enhanced alloy to enable up to 8% reduction in side wire temperature for improved durability and less pre-ignition
  • features cut back ground electrode for improved ignitability of flame kernel
  • Fit type: Vehicle Specific
  • specifically designed with colder heat ranges than the factory plug to enable performance modifications and handle intense conditions
  • replacement racing spark plug used by many professional car drivers
  • coated in an anti-corrosive nickel plating to prevent rusting
Autolite AR133-4PK High Performance Racing Non-Resistor Spark Plug, 4 Pack: image
90%
customers recommend this product
4.5/ 5
4

ACCEL 0526-4 HP Copper Spark Plug

3 ratings | 11 offers | 3 Reviews
Price: $12.96$36.16
Why we chose it
  • ACCEL 0526-4 U-Groove Resistor Spark Plug 14mm Thread .708 in. Reach Heat Range 6 4 Pack
ACCEL 0526-4 HP Copper Spark Plug: image
100%
customers recommend this product
5/ 5
5

Autolite APP605 Double Platinum Spark Plug, Pack of 1

71 ratings | 13 offers | 71 Reviews
Price: $2.6$15.18
Why we chose it
  • Full platinum tips ensure virtually no gap erosion
  • High nickel alloy side electrode maintains precise gap
  • Full copper core electrode provides better performance in all conditions
  • Necked-down center electrode fires quicker and cleaner, with less voltage for easier starts and quicker acceleration
  • Works to optimize engine performance for a longer life and improved fuel economy
Autolite APP605 Double Platinum Spark Plug, Pack of 1: image
92%
customers recommend this product
4.6/ 5
Top Pick
6

NGK 7397 TR5IX Iridium IX Spark Plug, Pack of 4

663 ratings | 10 offers | 663 Reviews
Price: $26.31$45.21
Why we chose it
  • Spark plugs
  • NGK Sparkplugs
  • 7397
NGK 7397 TR5IX Iridium IX Spark Plug, Pack of 4: image
94%
customers recommend this product
4.7/ 5
Value for money4.1
Mileage4
7

Autolite AP145-4PK Platinum Spark Plug, 4 Pack

24 ratings | 5 offers | 24 Reviews
Price: $10.29$30.1
Why we chose it
  • Full platinum tip ensures virtually no gap erosion for long plug life
  • Platinum alloy pad on ground electrode provides extended durability and service life and platinum-to-platinum firing
  • Yttrium enhanced, high nickel alloy side electrode maintains precise gap to increase plug life
  • Nickel-plated steel shell for long-life corrosion resistance
  • Necked-down center electrode fires quicker and cleaner, with less voltage for easier starts, quicker acceleration, and improved fuel economy
Autolite AP145-4PK Platinum Spark Plug, 4 Pack: image
90%
customers recommend this product
4.5/ 5
8

Bosch (7985) HR10BC+ Super Plus Spark Plug, (Pack of 1)

1 ratings | 3 offers | 1 Reviews
Price: $8.37$13.6
Why we chose it
  • Replaces OEM: Bosch 7985, HR10BC
  • Resistor plug type
Bosch (7985) HR10BC+ Super Plus Spark Plug, (Pack of 1): image
100%
customers recommend this product
5/ 5
9

NGK 7052 V-Power Spark Plug – YR5, 1 Pack

14 ratings | 11 offers | 14 Reviews
Price: $3.12$7.89
Why we chose it
  • V-groove center electrode improves ignitability and reduces quenching
  • 98% pure copper core increases heat dissipation for reliable starts and prevents spark plug from overheating
  • Quantity: 1 per package
  • High-grade alumina silicate ceramic insulator for superior strength and heat transfer
  • Cold-rolled threads to prevent cross-threading and damage to cylinder heads Trivalent plating eliminates need for anti-seize
NGK 7052 V-Power Spark Plug - YR5, 1 Pack: image
88%
customers recommend this product
4.4/ 5
10

NGK (2953) YR5GP G-Power Platinum Spark Plug, Pack of 1

2 ratings | 5 offers | 2 Reviews
Price: $3.23$9.98
Why we chose it
  • You can depend on NGK for quality and reliability
  • Extremely durable under high heat
  • Fine platinum tip reduces required voltage
  • Constructed from durable material
  • Features superior anti-corrosion and anti-seizing properties
NGK (2953) YR5GP G-Power Platinum Spark Plug, Pack of 1: image
100%
customers recommend this product
5/ 5
Top Pick
NGK 7397 TR5IX Iridium IX Spark Plug, Pack of 4
NGK Sparkplugs 7397 Iridium IX The Spark Plug Serious Enthusiasts Rely On - Iridium IX Spark Plugs are the most technologically advanced high performance plugs available. Featuring a 0.6 mm iridium center electrode tip, they offer superior ignitability without sacrificing durability. The tapered ground electrode increases flame kernel expansion, while the superior heat range design is ideally suited to the demands of high performance environments. Specially designed to meet the needs of serious enthusiasts, Iridium IX Spark Plugs offer outstanding acceleration, high fuel efficiency and long life. When you demand the most from your engine, rely on the proven performance of NGK Iridium IX Spark Plugs. NGK's new Iridium IX is the personification of these qualities and takes premium performance spark plugs to a new level. A level that is expected from the world leader in spark plugs. The fut
Ranking the Brands
E3 Spark Plugs: 10.00%
NGK: 30.00%
Autolite: 30.00%
ACCEL: 10.00%
: 20.00%

Comparison Table

Сomparison: E3 Spark Plugs E3.42 Automotive Spark Plug, Pack of 1: imageСomparison: NGK Standard Series Spark Plug BR6S (8 Pack) for CHEVROLET C10 SUBURBAN 1969-1970 5.7L/350: imageСomparison: Autolite AR133-4PK High Performance Racing Non-Resistor Spark Plug, 4 Pack: imageСomparison: ACCEL 0526-4 HP Copper Spark Plug: imageСomparison: Autolite APP605 Double Platinum Spark Plug, Pack of 1: imageСomparison: NGK 7397 TR5IX Iridium IX Spark Plug, Pack of 4: imageСomparison: Autolite AP145-4PK Platinum Spark Plug, 4 Pack: imageСomparison: Bosch (7985) HR10BC+ Super Plus Spark Plug, (Pack of 1): imageСomparison: NGK 7052 V-Power Spark Plug - YR5, 1 Pack: imageСomparison: NGK (2953) YR5GP G-Power Platinum Spark Plug, Pack of 1: image
E3 Spark Plugs E3.42 Automotive Spark Plug, Pack of 1NGK Standard Series Spark Plug BR6S (8 Pack) for CHEVROLET C10 SUBURBAN 1969-1970 5.7L/350Autolite AR133-4PK High Performance Racing Non-Resistor Spark Plug, 4 PackACCEL 0526-4 HP Copper Spark PlugAutolite APP605 Double Platinum Spark Plug, Pack of 1NGK 7397 TR5IX Iridium IX Spark Plug, Pack of 4Autolite AP145-4PK Platinum Spark Plug, 4 PackBosch (7985) HR10BC+ Super Plus Spark Plug, (Pack of 1)NGK 7052 V-Power Spark Plug – YR5, 1 PackNGK (2953) YR5GP G-Power Platinum Spark Plug, Pack of 1
BrandE3 Spark PlugsNGKAutoliteACCELAutoliteNGKAutoliteNGK
Top Material TypeAlloy SteelMetal, NickelNickelNickelMetalNickel, Alloy SteelCeramic
ManufacturerE3 Spark PlugsNGKAutoliteACCELAutoliteNGK SparkplugsAutolite
Item Weight1.44 ounces2.39 ounces0.8 ounces2.4 ounces7.2 ounces
Product Dimensions4.75 x 3.6 x 1 inches1 x 1 x 3.4 inches1 x 1 x 3.38 inches4.1 x 3.5 x 1 inches
Core MaterialCopperNickelCopperIridiumPlatinumCopper

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