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Paul Workman · 05-01-2015

AC Delco #41 602s work very well in several stock and modified cars. You can pay way more, but these will work well and are cheap enough you can replace them long before they're used up: always have a fresh set, doancha know.

The 90 head spark plug wells are cut with flat bottoms so whatever plug you end up with be sure they cross-reference to these AC plugs and have the ring seal (washer) attached.

05-01-2015	#2
Paul Workman Join Date: Nov 2007 Location: Squires (near Ava MO in the Mark Twain N'tl Forest) - Missouri Posts: 6,493	Re: 1990 Spark plugs AC Delco #41 602s work very well in several stock and modified cars. You can pay way more, but these will work well and are cheap enough you can replace them long before they're used up: always have a fresh set, doancha know. The 90 head spark plug wells are cut with flat bottoms so whatever plug you end up with be sure they cross-reference to these AC plugs and have the ring seal (washer) attached. __________________ Good carz, good food, good friendz = the best of timez! 90 #1202 "FBI" top end ported & relieved Cam timing by "Pete the Greek" Sans secondaries Chip & dyno tuning by Haibeck Automotive SW headers, X-pipe, MF muffs Former Secretary, ZR-1 Net Registry Last edited by Paul Workman; 05-01-2015 at 11:42 AM.