M mason_man Active Member May 31, 2013 #2 Flathead One said: What is the correct modern plug for a 1948 H Motor. Thanks Click to expand... If for the H&J Head, then J6, J8, J10, or AC-44. if for high fin head then Autolite 86. set gap at.023 to .025 can you post some pics.? Thanks, Ray
Flathead One said: What is the correct modern plug for a 1948 H Motor. Thanks Click to expand... If for the H&J Head, then J6, J8, J10, or AC-44. if for high fin head then Autolite 86. set gap at.023 to .025 can you post some pics.? Thanks, Ray
