stock spark plugs
In the super FAQ section it lists Delco 41-985 (GM part # 12571164) as oem plugs for the LS1.
My owners manual lists Denso PTJ16R15 as oem plugs.
I have NGK Tr55's in the car now but don't care for them. I know alot of you guys like em but I've got a slight miss at idle ever since switching to them from the stock plugs. I bought the car used last year w/ 34k miles on it and I believe the plugs I pulled out were the original's. They were the Denso's.
I'm sure this is a silly question and it probably dosen't matter but I just ordered the Delco 41-985. So which is oem ? is one better than the other ?
Car is an 01 SS.
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Like I said I'm not happy with the TR55's I have in the car now. We'll see how these work out.
Like I said I'm not happy with the TR55's I have in the car now. We'll see how these work out.
Thanks,






