mrmint69

My stock lt1 spark plug change took three hours. Getting ready to do a ls1 stock for the first time. How long should it take? Any special tools or tricks for these? What are the best plugs for them? Thanks!

transamtom

I used NGK Iridium plugs

If your running nitrous use a regular copper plug.

The LS1 should be a bit quicker,#8 needs to be done from the bottom.

WhiteHawk

I get #8 with a tiny snap-on 1/4" ratchet, a 1/4" to 3/8" adapter, and then a standardplug socket on the end. It is blind but I am pretty good at it after doing it a few dozen times. I always pull off the coilpacks too to make it easier to get my hands in there.

-Geoff

Mr99SS

I bought reg copper plugs getting them changed tomorrow with msd wires gates belts an changing coolant . im looking for high 12's tomorrow for a baseline

mrmint69

Took two hours including a compression check. Eight is crazy, but only took forty minutes. Thank goodness it was not on tight and threaded in easy. Thanks for your help!

Mr99SS

yeah pass side is hardest side