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Plugs for Edelbrock Aluminum Heads
Spark Plug Tech Help
Not sure which spark plug you need?
Heat range and tip depend on your heads, compression, and ignition. For Edelbrock aluminum heads we start with NGK-6962 on most street builds and NGK-4091 on higher-horsepower combos. Cast-iron picks and the full heat-range ladder are in the guide.
Street · NGK-6962
Higher HP · NGK-4091
Browse Plugs for Edelbrock Aluminum Heads Products
Items 1-7 of 7
Description: NGK-BKR-5-E Spark Plug (For Edel Alum Heads) 5/8"Hex, 3/4" Reach, 14mm Gasket Seat, Extended Tip, Heat Range 5 (Set)
Item #: NGK-7938-8
Condition:
New
Price: $54.95
Description: NGK-BKR-6-E Spark Plug (For Edel Alum Heads), 5/8" Hex, 3/4" Reach, 14mm Gasket Seat, Extended Tip, Heat Range 6 (Set)
Item #: NGK-6962-8
Condition:
New
Price: $54.95
Description: NGK-R5671A-10 Spark Plug (For Edel Alum Heads), 5/8" Hex, 3/4" Reach, 14mm Gasket Seat, Recessed Tip, Nitrous, Heat Range 10 (Set)
Item #: NGK-5820-8
Condition:
New
Price: $54.95
Description: NGK-R5671A-7 Spark Plug (For Edel Alum Heads), 5/8"Hex, 3/4" Reach, 14mm Gasket Seat, Recessed Tip, Heat Range 7 (Set)
Item #: NGK-4091-8
Condition:
New
Price: $54.95
Description: NGK-R5671A-8 Spark Plug (For Edel Alum Heads), 5/8" Hex, 3/4" Reach, 14mm Gasket Seat, Recessed Tip, Heat Range 8 (Set)
Item #: NGK-4554-8
Condition:
New
Price: $54.95
Description: NGK-R5671A-9 (For Edel Alum Heads), 5/8 Hex, 3/4" Reach, 14mm Gasket Seat, Recessed Tip, Nitrous, Heat Range 9 (Set)
Item #: NGK-5238-8
Condition:
New
Price: $54.95
Description: NGK-R5672A-8 Spark Plug (For Edel Alum Heads), 5/8" Hex, 3/4" Reach, 14mm Gasket Seat, Ext Tip, Heat Range 8 (Set)
Item #: NGK-7173-8
Condition:
New
Price: $54.95
Items 1-7 of 7
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More About Plugs for Edelbrock Aluminum Heads
Here is an example if you have a question about the heat range on an NGK spark plug.
The lower the #, the hotter the plug is.
(Example- -6 is a hotter plug than -9)
Spark plug gap for Points is .035 and any electronic or MSD is .040-.045
General Guideline- Pump gas street engines would use a -5 to -7 heat range, high compression race engines may use a -8 or -9 heat range, and boosted/nitrous engines may use a -9 or -10 heat range depending on levels of boost/nitrous.