How big should the gap be on a Ford Spark Plug?
One last thing: I’d drill, on Fords with front mounted distributors, a 1/8″ or so hole between the back side lugs, on the side of the cap. It’s a long story but the ionization inside a well-sealed cap isn’t ideal. Thank you both. Very useful information. I’ll go with the 3924’s and stick with the .035” gap.
Do you need a spark plug gap with Hei?
Spark plug gap should go with engine design and combustion chamber design , NOT the ignition system. I would suggest using the gap that orginally was spec-ed for the engine. Changing the ignition system doesnt change the engines spark requirements. HEI was developed for lean air fuel and epa 50]
What should the spark plug gap be on a 390fe?
If mainly street driven, go 3924. Finally, I’ve read in various blogs that with MSD ignition, a larger gap (by .010”) is recommended. Therefore, with standard recommended plug gap of .035”, should I start with a gap of .045” with the MSD ignition.
What are spark plug wires on Ford 302?
Everything on it was brand new, including HEI distibutor from Speedway motors and Comp Cam High Energy kit 218 (installed by engine builder). Plug wires that were installed initially were 7mm. I installed a fairly cheap set of 8mm wires on Friday after finding out the 7mm that were installed were inadequate for the HEI.
One last thing: I’d drill, on Fords with front mounted distributors, a 1/8″ or so hole between the back side lugs, on the side of the cap. It’s a long story but the ionization inside a well-sealed cap isn’t ideal. Thank you both. Very useful information. I’ll go with the 3924’s and stick with the .035” gap.
What kind of spark plug does a Ford Ranger have?
The large plug (left) has a 13/16 hex 18mm thread, and the smaller plug (right) has a 5/8 hex and 14mm thread. Ford switched to the smaller base spark plug in 1977 with the appearance of the D8OE heads. I use to have a 1970 302 in my Ford Ranger.
What’s the difference between spark plugs on a Ford 302?
Spark Plug Size Differences: The 302 came with (2) different size spark plugs. The large plug (left) has a 13/16 hex 18mm thread, and the smaller plug (right) has a 5/8 hex and 14mm thread. Ford switched to the smaller base spark plug in 1977 with the appearance of the D8OE heads.
If mainly street driven, go 3924. Finally, I’ve read in various blogs that with MSD ignition, a larger gap (by .010”) is recommended. Therefore, with standard recommended plug gap of .035”, should I start with a gap of .045” with the MSD ignition.