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Old 08-18-2013, 12:16 AM   #1
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Ls1 stock. Replacing spark plugs

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!
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1994 Z-28 LT1 A4, Supercharger 6 psi, 3.73 Gears, GMPP 1.6 Rockers, LT4 Springs, 42LB Bosch injectors, PCMFORLESS tune, All MSD ignition, Inline fuel pump, SLP sub frames, Panhard Bar, strut bar and rear control arms & LCA relocation, 1LE sway bar, Mid pacesetter's. 3" exhaust to Jegs electric cutout. Nitto NT555R Extreme Drag Radial 275/40R17
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Old 08-19-2013, 06:19 PM   #2
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Re: Ls1 stock. Replacing spark plugs

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.
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Old 08-20-2013, 02:54 PM   #3
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Re: Ls1 stock. Replacing spark plugs

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.

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Old 08-20-2013, 09:01 PM   #4
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Re: Ls1 stock. Replacing spark plugs

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
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Old 08-22-2013, 09:49 AM   #5
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Re: Ls1 stock. Replacing spark plugs

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!
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1994 Z-28 LT1 A4, Supercharger 6 psi, 3.73 Gears, GMPP 1.6 Rockers, LT4 Springs, 42LB Bosch injectors, PCMFORLESS tune, All MSD ignition, Inline fuel pump, SLP sub frames, Panhard Bar, strut bar and rear control arms & LCA relocation, 1LE sway bar, Mid pacesetter's. 3" exhaust to Jegs electric cutout. Nitto NT555R Extreme Drag Radial 275/40R17
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Old 08-31-2013, 03:19 PM   #6
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Re: Ls1 stock. Replacing spark plugs

yeah pass side is hardest side
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Old 08-31-2013, 03:19 PM
 
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