What should the spark plugs be on a 383 Stroker?
What should the spark plugs be on a 383 Stroker? Enter your ride HERE to be a part JUNE's Ride of the Month Challenge! Just wondering if you guys could maybe give me a couple recommendations for some spark plugs on a 383 stroker. Motor has 9.5:1 compression with 487X heads. I was thinking either Champion or NGK plugs, but I dont know what the gap should be??? What should the heat range be on a 383 Stroker? 441 heads are a late 60's head. Good for what your application. now those look nice! heat range 5, cool, gap .039...