04/01/2026
Accell Shorty Spark Plugs
Does anyone have any experience with the Accell shorty spark plugs for the Big Block Chevy engines. I have a 528 that I plan to run them in and am trying to find the heat range I need. So far it looks like the 0416S-4 with a heat range of 6 is my plug but just thought I’d throw it out there for anyone with experience running them to chime in.
Engine Specs:
528 big block Chevy.
4.5 stroke
6.535 rod
4.320 Bore T.D.
-26cc dome
11.21:1 comp
Brodix Dragon Slayer 320 heads