Best plugs for '97 Riv Supercharged?

[rivyera]

Can anyone recommend which spark plugs work best as an OEM replacement for a '97 Supercharged Riviera?

[HotZ28]

NGK TR55
http://www.ngksparkplugs.com/product...200&country=US

[plathegame]

ac delco

[mtmaurer8ooo]

ac delco only...I've heard this from too many people to test the waters on it.

[84accord]

My '97 has 90K miles on it and I recently changed the original plugs.
The AC plugs looked excellent for that many miles.
However, at about $12 each I didn't replace them with the same plugs.
I've used Autolite plugs for many years on my other cars (including GM).
I use the AP606 on the Riviera which is the single platinum version.
Excellent plugs, ran them for about 500 miles so far with no problem.
Checked them at 100 miles and the color looked great!

Rivrocket (84accord)

[96riviera18]

copper plugs work best in supercharged engines and i would recomend NKG, delco or autolite (they are the cheapest) i use the copper autolites, they wont last as long as platnium but they run cooler, esp if you go 1 or 2 ranges down.(only if your modded)

[plathegame]

However, at about $12 each I didn't replace them with the same plugs

not to be smart but there is a reason they are 12.00 a piece they are the best you can buy for that car.. autolite platinums arent bad tho, i put them in a friends 3100 century and they worked pretty good

[84accord]

Originally Posted by plathegame

not to be smart but there is a reason they are 12.00 a piece they are the best you can buy for that car.. autolite platinums arent bad tho, i put them in a friends 3100 century and they worked pretty good

The AC's looked excellent for that many miles. However, I can buy 3 Autolites for the price of one AC. I'll see how the Autolites work out (service life test). Even at $12 each if they go for 90K miles thats inexpensive in per mile cost. I hope I can stretch another 90K out of the car..... :-)

Thanks....

[gntbik]

only use ac delco plug and wires on the riveras