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AC delco platinums

heavydtheogre

heavydtheogre

Going Other Way,than most
Ok i know there are several threads about spark plugs, but could find one with these plugs
AC delco 41-940 copper platniums

The engine runs great, the gap is 0.060 and they look good.

Should i change or leave? Dont know how old these are.

And is anybody against Accel wires??

Part Number:
41-940
Weight:
0.1 lbs
Hex Size:
5/8 in.
Thread Size:
14 mm.
Electrode Core:
Copper
Resistor:
0.9-5 - 220
Heat Range:
4
Electrode Tip:
Platinum
Insulator Type:
Smooth
Seat Size:
14 mm.
Rib Configuration:
Ribless
Thread Reach:
0.679 in. (17.25 mm.)
Terminal top fixed or threaded:
Fixed
Seat Type:
Tapered
Shell Type:
Nickel plated



AcDelco41-9401.jpg


AcDelco41-9402.jpg
 


I'd change them just for piece of mind knowing when they were changed last. I used accel wires on my el camino and really liked them but I don't know about on the gp's
 
i had those when i got the car and changed them out for ngk gold's(on sale super cheap)
also changed the wires to what you listed.
still runs just fine
 
For what it takes to change them on a 3.1. If you have them out. I wouldn't be taking chances of putting an older plug back in.
 


Well, the plugs are hidden behind the exhaust manifolds. Which are hidden behind razor sharp heat shields and the rear barely has enough room to get an arm down the hole. You'll be fine.
 


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