LT1-LT4 Modifications 1993-97 Gen II Small Block V8

Support Group for people who have changed Spark Plug wires

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Old 04-30-2013, 09:10 PM
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Default Support Group for people who have changed Spark Plug wires

We few who have experienced changing spark plug wires on our LT1's need to band together to stay strong through though this traumatizing ordeal that is changing the spark plug wires on LT1's.

Though most of the world will never understand, there are some who do.

On a side note who is up for hunting down the guy who designed the spark plug wire routing and re-routing his face into his ***? LOL
Old 04-30-2013, 09:18 PM
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I don't see headers in your sig,so I'm assuming you're running the stock manifiolds still.Kitchener,eh! Mississauga,here? I'm doing mine this weekend,wish me luck ...or you can swing by and help lol
Old 05-01-2013, 12:13 AM
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truely a pita
Old 05-01-2013, 07:59 AM
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Yup, worst experience ever, had to do it TWICE. Put ac delco conventional plugs in with some delco wires. Started to misfire after a month (maybe sooner but it gradually got worse) under load if you were in a high gear. LT1s called for delco platinums, and thats what we pulled out of the car origionally so platinums went in. None of the new wires were melted or not fully on the plug and when we pulled the plugs they looked fine and were gapped correctly. Put the platinums in without having to change the wires again and ive been good since. About the install it could have been worse, i used a lift and all of them came out from the bottom, only 1 or 2 gave me alot of aggrivation, this is with cast iron manifolds.
Old 05-01-2013, 08:03 AM
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You keep the stock routing, stick with nothing larger than an 8mm wire, don't buy some bullshit monster 8.5mm wires that won't fit in the stock clips and slots and it's not all that bad.
Old 05-01-2013, 08:15 AM
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Yah I ran Taylor 8mm in stock routing but I just zip tied it away from anything that an damage them. I just don't have the patentience lol it was awesome my hands are so beat up today!
Old 05-01-2013, 08:20 AM
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There are much much worse vehicles to work on then LT1s. Not saying it is super easy, but Id rather do that then change another water pump on the GF's VW. Good luck!
Old 05-01-2013, 08:37 AM
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After headers, air pump removal ac removal it really isnt that bad haha, Take off my belt tensioner power steering pump and ac delete pully and its rather easy haha. althought my wires are routed all kind of stupid to prevent them from touching the longtubes
Old 05-01-2013, 11:45 AM
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I'm doing a 24x swap right now, I won't miss doing plug wires.
Old 05-01-2013, 01:15 PM
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I've changed the plugs on my LT so many times that it only takes me about 20 minutes now. I also have the use of a lift, which makes it a lot easier.
Old 05-01-2013, 03:05 PM
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Put a good exhaust on the car and call it good.
Old 05-01-2013, 04:41 PM
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I've found, that if you're running stock manifolds, and the nuts that hold the "Y-pipe" on aren't too rusty, drop the pipe. You'll have a LOT more room. I also pulled out the bolts that hold the p/s pump to its mounting bracket, allowing it to droop forward, and you can then get at the wire loom that's behind there.

FWIW, I used the Moroso Blue Max wires. Pre-cut to length, terminals installed, and wires are numbered by cylinder.
Old 05-01-2013, 04:49 PM
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Do Over the Valve Cover, headers, and a LTCC super easy to do lol
Old 05-02-2013, 08:19 AM
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Did mine on a lift. Was able to get to most of the plugs from under. Im running race version pacesetter long tubes with no EGR pipe. Has little more room which makes it easier.
Old 05-02-2013, 08:41 AM
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sign here too, I did everthing from the bottem.
Old 05-02-2013, 04:22 PM
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I've done wires twice. First time as maintenance, second time because one got caught on a pulley and ate up.
Old 05-06-2013, 04:42 PM
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It doesnt really seem too bad to me. Dropped the Y-pipe and good to go. Even with the stock manifolds. Only thing that really sucked was getting the pass. side wires back down to the opti.
Old 05-06-2013, 05:18 PM
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With longtubes from the top doing mine sucks... I have a misfire problem now and have to pull them all back out and check em...
Old 05-06-2013, 06:28 PM
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im in the process of deleting AIR and A/c i just need the 1LE pulley that will make it so much better! then headers
Old 05-06-2013, 10:44 PM
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Originally Posted by jrwilliams95z28
im in the process of deleting AIR and A/c i just need the 1LE pulley that will make it so much better! then headers
I have an almost new 1le pulley if you want it shoot me an offer.


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