C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

HELP with plug wires on LT1

Thread Tools
 
Search this Thread
 
Old Aug 21, 2010 | 05:10 PM
  #1  
tblt44's Avatar
tblt44
Thread Starter
Drifting
 
Joined: Aug 2009
Posts: 1,615
Likes: 3
From: Tampa Fl
Default HELP with plug wires on LT1

Ok everthing I do I run into a wall.
How do I get the plug wires by the power steering pump line on the drivers side.All 4 wires go thru a small space.Do I just force them thru?
If I would have known about the small space I would have made my own after putting the wire thru that small spot.

I have the passenger side done plus and wires.tight but got it.
Reply
Old Aug 21, 2010 | 06:57 PM
  #2  
JAKE's Avatar
JAKE
Le Mans Master
10 Year Member
 
Joined: Feb 2000
Posts: 9,715
Likes: 27
From: Kempner Texas
Default

Originally Posted by tblt44
Ok everthing I do I run into a wall.
How do I get the plug wires by the power steering pump line on the drivers side.All 4 wires go thru a small space.Do I just force them thru?
If I would have known about the small space I would have made my own after putting the wire thru that small spot.

I have the passenger side done plus and wires.tight but got it.
Some remove the wheel well panel, others do that plus attack it from underneath. I'll bet there's something in the Tech Tips on this since it comes up fairly often.

Personally I haven't had to tackle this job yet - with the engine in the car - but my day is coming, LOL

Jake
Reply
Old Aug 21, 2010 | 09:53 PM
  #3  
SJW's Avatar
SJW
Le Mans Master
20 Year Member
 
Joined: May 2005
Posts: 7,359
Likes: 2,281
From: Central Maryland
Default

Changing the plug wires on an LT1/LT4 Corvette is not a lot of fun, but it can be done. Here are a few tips I posted here years ago:

1. Raise the front end of the vehicle to a more comfortable working height.

2. Remove the inner fenderwell center panel on the driver's side. This will allow you to both see and do the job much more easily on the driver's side. You may also find it helpful to remove the wheel.

3. Unbolt the ASR bracketry from the frame, so that you can slide the ASR unit around to get it out of your way.

4. Remove the serpentine belt and tensioner.

5. Unbolt the power steering pump so that you can move it forward around a half inch. This will make it much easier to sneak the plug wires in/out behind the pump.

6. Use dielectric grease in the boots at both ends of the wires. Be sure to "burp" the air out of the boots after you get each of them pushed firmly into place, so that the trapped air doesn't try to push the wires off later.

Some guys report that they've had decent success accessing the Opti-end of the plug wires from underneath of the car, and that this saved them the trouble of removing the belt and tensioner. I haven't tried this, so I can't comment.

Take your time, work with care, and pay attention to what you're doing. The OEM replacement plug wires from your Chevy dealer are high quality parts, and will route (and fit into the wire looms) correctly. Run the new wires properly, and make sure they stay away from anything that moves, is sharp, or gets hot.

The passenger's side is not such a bad job. The driver's side is a Queen Royal Beyotch (mostly because all of the belt-driven accessories are hanging on the driver’s side of the front of LT1/LT4 engines, and they leave little room for you to work or see what you’re doing). With plenty of patience, beer and Band-Aids, you'll get it done.

Live well,

SJW
Reply
Old Aug 21, 2010 | 10:13 PM
  #4  
tblt44's Avatar
tblt44
Thread Starter
Drifting
 
Joined: Aug 2009
Posts: 1,615
Likes: 3
From: Tampa Fl
Default

I can get everything its just getting the wires thru by the ps pump metal bracket.I will give it another go tomorrow,I have just about everthing apart anyways since i'm replacing my front timing cover seals
Reply
Old Aug 22, 2010 | 10:06 AM
  #5  
SJW's Avatar
SJW
Le Mans Master
20 Year Member
 
Joined: May 2005
Posts: 7,359
Likes: 2,281
From: Central Maryland
Default

Originally Posted by tblt44
I can get everything its just getting the wires thru by the ps pump metal bracket.I will give it another go tomorrow,I have just about everthing apart anyways since i'm replacing my front timing cover seals
Remove the serpentine belt and tensioner.

Unbolt the power steering pump so that you can move it forward around a half inch. This will make it much easier to sneak the plug wires in/out behind the pump.

Live well,

SJW
Reply
Old Aug 22, 2010 | 11:27 PM
  #6  
92WhiteVetteGuy's Avatar
92WhiteVetteGuy
Instructor
10 Year Member
 
Joined: Dec 2006
Posts: 137
Likes: 0
Default

Hi,
I am also replacing my wires due to a failed WP.
I did the following to gain additional access:
1. Removed C/S pulley dampener
2. Removed serpentine belt idler
3. Unbolted A/C compressor from its aluminum bracket (leave hose attached)
4. Remove inner fender well center panel
5. Route sparkplug wires like original (do not forget to reuse original wire wrapping to minimize chaffing)
PM me for pics.
Best of Luck,
Reply
Old Aug 23, 2010 | 07:59 AM
  #7  
onedef92's Avatar
onedef92
Team Owner
20 Year Member
 
Joined: Oct 2000
Posts: 96,443
Likes: 9
From: Fort Knox, KY
Cruise-In IV Veteran
Cruise-In VI Veteran
Cruise-In VII Veteran
Cruise-In VIII Veteran
Default

Originally Posted by SJW
Changing the plug wires on an LT1/LT4 Corvette is not a lot of fun, but it can be done. Here are a few tips I posted here years ago:

1. Raise the front end of the vehicle to a more comfortable working height.

2. Remove the inner fenderwell center panel on the driver's side. This will allow you to both see and do the job much more easily on the driver's side. You may also find it helpful to remove the wheel.

3. Unbolt the ASR bracketry from the frame, so that you can slide the ASR unit around to get it out of your way.

4. Remove the serpentine belt and tensioner.

5. Unbolt the power steering pump so that you can move it forward around a half inch. This will make it much easier to sneak the plug wires in/out behind the pump.

6. Use dielectric grease in the boots at both ends of the wires. Be sure to "burp" the air out of the boots after you get each of them pushed firmly into place, so that the trapped air doesn't try to push the wires off later.

Some guys report that they've had decent success accessing the Opti-end of the plug wires from underneath of the car, and that this saved them the trouble of removing the belt and tensioner. I haven't tried this, so I can't comment.

Take your time, work with care, and pay attention to what you're doing. The OEM replacement plug wires from your Chevy dealer are high quality parts, and will route (and fit into the wire looms) correctly. Run the new wires properly, and make sure they stay away from anything that moves, is sharp, or gets hot.

The passenger's side is not such a bad job. The driver's side is a Queen Royal Beyotch (mostly because all of the belt-driven accessories are hanging on the driver’s side of the front of LT1/LT4 engines, and they leave little room for you to work or see what you’re doing). With plenty of patience, beer and Band-Aids, you'll get it done.

Live well,

SJW

Ah, the dreaded LT1 driver's side "hell hole." SJW speaks the truth. I followed the same procedure when I swapped my plugs/wires/looms out, too.

It's a straight *****, but it can be done. Persistence overcomes resistance.







Reply
Old Aug 23, 2010 | 06:47 PM
  #8  
tblt44's Avatar
tblt44
Thread Starter
Drifting
 
Joined: Aug 2009
Posts: 1,615
Likes: 3
From: Tampa Fl
Default

plugs and wires in thanks all.The wire on the drivers side were a pain.All 8 plugs went in good.
I used NGK G platinum plugs and Taylor spiral wires

Thanks again for your help,I just hope it starts when I try in a few days
Reply
Corvette Stories

The Best of Corvette for Corvette Enthusiasts

story-0

10 Ugly Corvettes That We Still Kinda Love

 Joe Kucinski
story-1

Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer

 Brett Foote
story-2

10 Things Every Corvette Owner Needs (2026 Edition)

 Michael S. Palmer
story-3

8 Most "Only Corvette Owners Understand" Quirks and Problems

 Pouria Savadkouei
story-4

10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years

 Joe Kucinski
story-5

How Much Horsepower Every Corvette Engine "LOST" in 1972

 Joe Kucinski
story-6

Top 10 DOs and DON'Ts for Protecting Your Convertible Top!

 Michael S. Palmer
story-7

Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!

 Joe Kucinski
story-8

150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter

 Joe Kucinski
story-9

8 Coolest Corvette Pace Cars (and Replicas) of All Time

 Verdad Gallardo
Old Aug 23, 2010 | 07:42 PM
  #9  
Al Borman's Avatar
Al Borman
Instructor
10 Year Member
 
Joined: Jan 2010
Posts: 174
Likes: 4
From: Austin_Palm Bay_Houston Texas_Florida_Texas
Default

Originally Posted by onedef92
Ah, the dreaded LT1 driver's side "hell hole." SJW speaks the truth. I followed the same procedure when I swapped my plugs/wires/looms out, too.

It's a straight *****, but it can be done. Persistence overcomes resistance.







Onedef92......great pics of the "Hell Hole" !!! Bookmarked for future reference !!
Reply
Old Aug 24, 2010 | 09:05 AM
  #10  
onedef92's Avatar
onedef92
Team Owner
20 Year Member
 
Joined: Oct 2000
Posts: 96,443
Likes: 9
From: Fort Knox, KY
Cruise-In IV Veteran
Cruise-In VI Veteran
Cruise-In VII Veteran
Cruise-In VIII Veteran
Default

Originally Posted by Al Borman
Onedef92......great pics of the "Hell Hole" !!! Bookmarked for future reference !!

Thanks. I prefer the clean, O.E.M. wire looms/holders installation, too. I'm pretty persnickety over things like that. Mid-America Motor works (MAM) sells the looms in a kit.



I also used corrugated tubing over the coil and ignition wires exposed to high heat areas, just like O.E.M. You can buy it at any auto parts store.

Last edited by onedef92; Aug 24, 2010 at 09:07 AM.
Reply
Old Aug 24, 2010 | 09:49 PM
  #11  
tblt44's Avatar
tblt44
Thread Starter
Drifting
 
Joined: Aug 2009
Posts: 1,615
Likes: 3
From: Tampa Fl
Default

put the wp on today,I have so much room to put the coil wire on,I would hate to do this job without pulling the wp.
Reply
Old Aug 24, 2010 | 10:39 PM
  #12  
JAKE's Avatar
JAKE
Le Mans Master
10 Year Member
 
Joined: Feb 2000
Posts: 9,715
Likes: 27
From: Kempner Texas
Default

Originally Posted by tblt44
put the wp on today,I have so much room to put the coil wire on,I would hate to do this job without pulling the wp.
Yea, tell me about it. It's a tight fit.

Jake
Reply
Old Aug 25, 2010 | 07:01 AM
  #13  
onedef92's Avatar
onedef92
Team Owner
20 Year Member
 
Joined: Oct 2000
Posts: 96,443
Likes: 9
From: Fort Knox, KY
Cruise-In IV Veteran
Cruise-In VI Veteran
Cruise-In VII Veteran
Cruise-In VIII Veteran
Default

Originally Posted by tblt44
put the wp on today,I have so much room to put the coil wire on,I would hate to do this job without pulling the wp.
No better time to swap plugs/wires than when the WP (and often the Opti) are off the car.
Reply
Old Aug 25, 2010 | 07:05 AM
  #14  
onedef92's Avatar
onedef92
Team Owner
20 Year Member
 
Joined: Oct 2000
Posts: 96,443
Likes: 9
From: Fort Knox, KY
Cruise-In IV Veteran
Cruise-In VI Veteran
Cruise-In VII Veteran
Cruise-In VIII Veteran
Default

Originally Posted by tblt44
put the wp on today,I have so much room to put the coil wire on,I would hate to do this job without pulling the wp.
Did you wrap your coil wire in corrugated flex tubing to help offset the heat it experiences being positioned in between the air intake coupling and the top of the engine?

My O.E.M. coil wire came pre-wrapped from the factory and I can see why. A lot of LTx coil wires go bad in that area due to the burning off of the insulation, resulting in arcing, loss of maximum ignition power, and subsequent other problems.
Reply
Old Aug 27, 2010 | 07:58 PM
  #15  
tblt44's Avatar
tblt44
Thread Starter
Drifting
 
Joined: Aug 2009
Posts: 1,615
Likes: 3
From: Tampa Fl
Default

Well the vette runs rally smooth with my new plugs and wires.
No oil or water leaks yet.
Had a little over heat problem,didn't burp the system good enough at first,thats why I let it warm up in the driveway first.
Reply

Get notified of new replies

To HELP with plug wires on LT1





All times are GMT -4. The time now is 11:52 PM.

story-0
10 Ugly Corvettes That We Still Kinda Love

Slideshow: 10 ugly Corvettes that we still kinda love.

By Joe Kucinski | 2026-06-03 10:34:17


VIEW MORE
story-1
Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer

A lot of money has changed hands at the online auction house over the years.

By Brett Foote | 2026-06-03 10:21:50


VIEW MORE
story-2
10 Things Every Corvette Owner Needs (2026 Edition)

Slideshow: 10 great gifts Corvette enthusiasts actually want for Father's Day!

By Michael S. Palmer | 2026-06-03 15:43:40


VIEW MORE
story-3
8 Most "Only Corvette Owners Understand" Quirks and Problems

Slideshow: These are the quirks, annoyances, and oddly lovable problems that every Corvette owner eventually learns to live with.

By Pouria Savadkouei | 2026-05-28 09:31:39


VIEW MORE
story-4
10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years

Slideshow: 10 reasons why the C6 Z06 is still a performance benchmark after 20 years.

By Joe Kucinski | 2026-05-27 17:20:09


VIEW MORE
story-5
How Much Horsepower Every Corvette Engine "LOST" in 1972

Slideshow: How much horsepower every Corvette engine lost in 1972.

By Joe Kucinski | 2026-05-27 16:54:53


VIEW MORE
story-6
Top 10 DOs and DON'Ts for Protecting Your Convertible Top!

Slideshow: How to Protect A Convertible Top: 10 DOs & DON'Ts

By Michael S. Palmer | 2026-04-03 00:00:00


VIEW MORE
story-7
Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!

Slideshow: The 10 most explosive Corvettes ever built based on power-to-weight ratio.

By Joe Kucinski | 2026-05-20 07:23:03


VIEW MORE
story-8
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter

Slideshow: From C1 to C8 we compare every Corvette generation by the numbers.

By Joe Kucinski | 2026-05-12 16:54:12


VIEW MORE
story-9
8 Coolest Corvette Pace Cars (and Replicas) of All Time

Slideshow: Some Corvette pace cars became collectible legends, while others perfectly captured the look and attitude of their era.

By Verdad Gallardo | 2026-05-11 09:50:51


VIEW MORE