Hi Guys,

Does anyone know the part #'* for ac/delco platinum plugs for a 1992 SSE Vin "L" ? Are they posted anywhere on the site cause I can't find them.

You can probably find them on acdelco.com. But as others will tell you, the supercharged engine eats platinum plugs. I ran bosch platinums and the center electrode was missing on about 3 of the plugs when I took them out.

NGK makes them. Just put some NGK'* in. Any design you want. I prefer the NGK V-power TR55'*. They'll work well in yours. You can use irridium or platinum as well, just stay away from Bosch.

Funny how the Bosch Platinums have performed in our cars. L27, L36, and both Series of L67 hate them equally.

Will, it is strange. I used Bosch Platinums on my 78 GPrix V8 and they looked new years after I installed them.

Could it be the waste spark affecting them in some way?

I dunno. My 91 Civic, 98 Z71 and 94 Suburban all did the same thing. Half extruded the electodes (stretched it out) so that the spark gap was half normal, half erode, making the gap too big.

The only car I ever had them work good on was a Quad4.

Anyone had a LT test on Delco Iridiums? I've got probably 4-5K on mine now... wondering if anyone has had them for 20-50K