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Best Spark plugs for 270 Crusaders
Posted: Sun Nov 04, 2012 11:49 pm
by AndyF32
I have 1990 Crusaders that need the plugs and wires replaced. Looking for opinions on which plugs run best in these engines.
Thanks
Posted: Mon Nov 05, 2012 6:25 am
by prowlersfish
AC plugs work best in GM engines
Posted: Mon Nov 05, 2012 7:04 am
by Stripermann2
MR43T AC Delco. Marine spark plug. Don't use automotive plugs. The threaded casing will rust and could break off in cylinder head. Seen it many times...
Posted: Mon Nov 05, 2012 7:20 am
by prowlersfish
Stripermann2 wrote:MR43T AC Delco. Marine spark plug. Don't use automotive plugs. The threaded casing will rust and could break off in cylinder head. Seen it many times...
X2 -
Posted: Mon Nov 05, 2012 10:39 am
by AndyF32
Thanks! Gap is .030 I assume. Any preference on wires?
Posted: Mon Nov 05, 2012 11:48 am
by Stripermann2
Try Crusader part number, 97454 for the wires.
Posted: Tue Nov 06, 2012 9:30 pm
by AndyF32
Thanks for all the info. I think I will spray some penetrating oil on the plugs that are in there now before I try to remove them. I was not aware of that corrosion issue with some plugs.