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Butler Performance Inc. - 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.
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.
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