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Factory recommended .035 with the weak point ignitions of the time. If you have upgraded to an electronic ignition, you may find a small gain in drivability, mileage, and performance by opening up the plug gaps to .045-.060. Any difference will be very slight unless you were experencing alot of fouling and/or misfires with points. If you still have points, go with the factory setting.
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∙ 15y ago
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What is the spark plug gap for a 1979 Pontiac 400?
.045
What is the spark plug gap for a 1972 Pontiac 400?
035
What is the plug gap on a Pontiac 400?
.035
What is the spark plug gap on a Yamaha kodiak?
The spark plug gap on a 2000 Kodiak 400 is .024
What is max rpm to 1969 Pontiac 400 YT code?
Rpm Red line 1968 Pontiac firebird 400 HO
What is the correct spark plug for the Yamaha seca 400 motorcycle?
The correct spark plug for this motorcycle is: NGK D8EA
Why does spark plug keep fouling on Kodiak 400 ATV?
it could be a bad spark plug wire or the plug could be gapped to much
What are the tune-up specs for a 1973 Pontiac 400 CI?
400 ci spark plug r-46ts spark plug gap .040 point dwell 28 to 32 point gap .016 ignition timing 12b fuel pump pressure 5 to 6 1/2 idle speed 650
What engine is in your Pontiac?
Mine is a 1968 400 ci "WT" code.
What is the spark plug gap for a Yamaha big bear 400?
The spark plug gap for a Yamaha Big Bear 400 should be set at .024 inches. A new spark plug may be purchased at an auto parts store with the gap preset.
What is the spark plug gap for a 79 trans am with a 400?
.060
What is the spark plug gap for a polaris 400 scrambler?
.028
