[hardline_42]

I just did the plugs on my LT1 yesterday. I did every single one from above except #7 (got it out from above but couldn't thread the new plug in). The hardest one was #8 (from above) because it's right by the O2 senor (stock manifolds) and it's tough to slip a ratchet on it. I used the plug socket and an open ended wrench on the end with wrench flats. I suggest you get comfortable sitting on the intake. It's actually pretty comfortable and the hood provides some shade. Standing next to the car leaning on the fenders is useless. I had Auotlite 106's on it and I swapped them for NGK TR55's. Stay away from Bosch's.

If the Opti has to get swapped and it's your first time, give yourself a good 2 days to do it. I suggest getting an Opti from www.all-ignition.com. I got a brand new Delco Opti with an upgraded cap for $150 and it's running strong since I installed it.

Another thing to check are the plug and coil wires. Mine were in pretty bad shape with some of the terminals rusted out. If you're gonna swap them out, I suggest getting some Taylor cut-to-fit wires or a roll of MSD Super Conductor and run them OTVC. You'll never have to deal with getting the passenger side wires between the block and the accessory bracket again.