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

LT1 Ignition ?

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Old 07-17-2008, 04:36 PM
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Default LT1 Ignition ?

what would be the best LT1 plug wires?
Old 07-17-2008, 04:37 PM
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I like the taylor over the valve cover wires. No worries of burning them, they perform great and they look nice in your engine bay.
Old 07-17-2008, 04:42 PM
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I've had the MSD 8.5's for 50k. No problems whatsoever
Old 07-17-2008, 04:51 PM
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one of my msd wires popped off today and melted so i willing to change, are those over the valve cover wires custom cut to fit or is there a kit
Old 07-17-2008, 05:01 PM
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there is a kit I think. Mine were the cut to length ones and a super pain to do. I had to have the guys a G-Force help me out. lol, im pathetic.

http://thunderracing.com/catalog/?ac...vid=4&pcid=104

these are the ones I got. but they are the cut to fit ones. I think I have heard of a kit that is already cut. just search around you'll find em.
Old 07-17-2008, 08:09 PM
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I use taylor spiro pro wires, got them from summit.
Old 07-18-2008, 07:41 AM
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msd 8.5's here no probs
Old 07-18-2008, 07:57 AM
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I had a hard time routing my MSD 8.5's around the front pass side of the engine in back of the ps pump. The wires are too thick to fit into the holder there. My next set of wires will be no larger than 8mm.
Old 07-18-2008, 02:51 PM
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Do the over the valve cover wires work on a car with stock manifolds or only ones with headers?
Old 07-18-2008, 03:21 PM
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Stock manifolds use the factory routing, if you have headers you can use otvc wires.
Old 07-18-2008, 04:09 PM
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I went with MSD 8.5s for my OTVC set up, here's a pic:





I like the MSDs because the Opti terminals have a very "positive" feel when they snap on to the cap so you know they are on there good. The wires also have a lot of heft to them.
Old 07-18-2008, 06:25 PM
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I've got OE manifolds and OE wire looms. I've been using Moroso Blue Max wires for the last 7-8 years. Good fit and correct length, no problems.
Old 07-18-2008, 06:35 PM
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purple, was that a cut to fit set of MSD's?

i want to switch my taylors for MSDs soon.
Old 07-18-2008, 06:40 PM
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Originally Posted by Revelation Z28
purple, was that a cut to fit set of MSD's?

i want to switch my taylors for MSDs soon.
Yeah, they were cut-to-fit. Also, the Made-For-You looms are meant for 8mm wires but they still worked pretty good with the MSDs, just a tight fit.
Old 07-18-2008, 06:46 PM
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Originally Posted by Purple95Z28
Yeah, they were cut-to-fit. Also, the Made-For-You looms are meant for 8mm wires but they still worked pretty good with the MSDs, just a tight fit.
thats the cut to fit basic LT1 kit right? so it could be used for stock routing and over the cover?
Old 07-18-2008, 07:07 PM
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Originally Posted by Revelation Z28
thats the cut to fit basic LT1 kit right? so it could be used for stock routing and over the cover?
Correct
Old 07-18-2008, 07:40 PM
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Most of the big name manufacturer are all good. Taylor, MSD, Accel, Moroso just to name a few. And they have the correct length for the LT1's.

Personally, the over the valve cover set up never really impressed me, it just makes the engine bay more cluttered looking with more wires in view. Just my opinion. I use Taylor spiropro myself in stock location. Here's a pic which I think is a cleaner looking vs. otvc set up.

Old 07-18-2008, 10:02 PM
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Originally Posted by BOLO
Most of the big name manufacturer are all good. Taylor, MSD, Accel, Moroso just to name a few. And they have the correct length for the LT1's.

Personally, the over the valve cover set up never really impressed me, it just makes the engine bay more cluttered looking with more wires in view. Just my opinion. I use Taylor spiropro myself in stock location. Here's a pic which I think is a cleaner looking vs. otvc set up.

Hard to look clean with all that nitrous plumbing under there..
Old 07-20-2008, 05:43 AM
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those are some clean looking LT1 engines/engine bays.

One mistake that I amde was buying MSD 8.5 wires and placing them in factory looms beehind the A/C compressor (drivers side wires did not go back through wire looms). This pinched the wires and the car ran like *** until I found the problem. I checked everything and the passenger side of engine always showed different readings compared to drivers side when scanning. Looked for exhaust leaks, vacuum leajks, etc, etc, just anything that would make that side of engine read differently.

I decided to try some $45 Oreilleys 7 MM plug wires (Magna Sparks, Dura Sparks or something like that, LOL) and when I fired the engine with the new plug wires it sounded mean as hell and after a few blips of the throttle, I could tell I found the problem.

A quick trip around the block and GOOD GOD, the car ran like it should have ran when it was first put together and after chasing problems for 2 months, this was the one thing that made a difference.

Those cheapo wires are still on to this day and the damaged MAD wires went in the trash ($100 lesson learned the hard way).

ANYWAY . . . . . just make sure and enlarge the factory wire looms if using larger wires so you do not make the same mistake I did.

Lloyd
Old 07-20-2008, 07:41 AM
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Originally Posted by NightTrain66
those are some clean looking LT1 engines/engine bays.

One mistake that I amde was buying MSD 8.5 wires and placing them in factory looms beehind the A/C compressor (drivers side wires did not go back through wire looms). This pinched the wires and the car ran like *** until I found the problem. I checked everything and the passenger side of engine always showed different readings compared to drivers side when scanning. Looked for exhaust leaks, vacuum leaks, etc, etc, just anything that would make that side of engine read differently.

I decided to try some $45 Oreilleys 7 MM plug wires (Magna Sparks, Dura Sparks or something like that, LOL) and when I fired the engine with the new plug wires it sounded mean as hell and after a few blips of the throttle, I could tell I found the problem.

A quick trip around the block and GOOD GOD, the car ran like it should have ran when it was first put together and after chasing problems for 2 months, this was the one thing that made a difference.

Those cheapo wires are still on to this day and the damaged MAD wires went in the trash ($100 lesson learned the hard way).

ANYWAY . . . . . just make sure and enlarge the factory wire looms if using larger wires so you do not make the same mistake I did.

Lloyd

Good post!!


Just an FYI, the Moroso wires that I used fit through the OE looms, etc...


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