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
