kicksZ28

iTrader: (33)

Changed my stock ones today and replaced with the TR55's. Took about 2.5 hours on the 98 Z. Runs a lot better. Several of the Plats had discs missing and the gaps were around 60 or greater. The plats had about 52,000 miles on them.

98redM6

iTrader: (39)

I just did mine last weekend took me the same amount of time. Mine was way over due with the stock plugs at 124k miles. Replaced them with the same tr55 plugs gapped at .59 and msd wires.

My car still ran fine, no misfires or anything.

kicksZ28

iTrader: (33)

My car only has 52,000 miles and is not a daily driver so i will not have to change the plugs that often. I heard so much about the TR55's so i figured i would give them a try. The back one on the passenger side was hell and took a lot of patience.

hokie00 TA

iTrader: (4)

it was alot easier to get to the back passanger side plug from the bottom side.

RoDan

yeah, number 8 is a bitch.

GMmexican

iTrader: (7)

My cars seems a bit rougher with tr55's ive took em all out and checked and everything seemed fine......Im going to try NGK iridiums next

Z28/2002

iTrader: (27)

I have found it is easier to put the spark plug socket on the plug then take a 3/8" ratchet with a 3/4"(or whatever fits on the end of the SP socket) socket and use it that way. Just long enough to clear Pacesetters and just short enough not to hit the **** on the passenger side inner fender

99z28monster

iTrader: (3)

^^^smart^^^ I'll have to give that a try. hope it helps with slp headers