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Old 08-05-2017, 05:33 PM   #1
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Just changed plugs and wires as well as oil!

Talk about an easy task. Well, for my son at least. Took him about 40 minutes to change the oil and filter (Mobil 1 5-30 and Wix filter) plugs (AC Delco 41-101 gapped to .045 and Ultra wires (retaining the heat shield).

Now, hopefully the beast will come alive with the Performance Tune I had done a Brazel's a few weeks ago. The thing was sure missing at low rpm on our drive back from the WA coast. Head to Seaside, Or on the 13th for a few weeks and eclipse viewing.

FYI, son said the upper and lower radiator hoses are a little soft (27K miles) and the serpentine belt looks like it could be replaced. Sound about right?
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Old 08-06-2017, 12:52 AM   #2
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Best change those hoses and that belt. Better now than waiting till you're broke down along side the rode.

Time for new Antifreeze anyways.
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Old 08-06-2017, 09:10 AM   #3
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Sounds about right, don't forget to drain the block, one drain plug on each side of the 8.1, I was surprised on how much coolant came out of the block that did not drain after taking the hoses off.
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Old 08-08-2017, 12:31 AM   #4
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Quote:
Originally Posted by Wbonsell View Post
Talk about an easy task. Well, for my son at least. Took him about 40 minutes to change the oil and filter (Mobil 1 5-30 and Wix filter) plugs (AC Delco 41-101 gapped to .045 and Ultra wires (retaining the heat shield).

Now, hopefully the beast will come alive with the Performance Tune I had done a Brazel's a few weeks ago. The thing was sure missing at low rpm on our drive back from the WA coast. Head to Seaside, Or on the 13th for a few weeks and eclipse viewing.

FYI, son said the upper and lower radiator hoses are a little soft (27K miles) and the serpentine belt looks like it could be replaced. Sound about right?
You will like the response from the plugs and wires. I did the plugs and wires first and really noticed a difference in how smooth the motor ran. My first trip after installing the plugs and wires was pulling my heavy jeep but there is no doubt the motor ran much better.

A week ago my Ultra RV tuned ECM/TCM showed up and I threw those on immediately. We just got home from a 1000 mile trip and for sure the Ultra RV tune helped the motor as well.

I think you will be pleased with how she runs all tuned up.
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Old 08-15-2017, 08:18 AM   #5
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You will like the response from the plugs and wires. I did the plugs and wires first and really noticed a difference in how smooth the motor ran. My first trip after installing the plugs and wires was pulling my heavy jeep but there is no doubt the motor ran much better.

A week ago my Ultra RV tuned ECM/TCM showed up and I threw those on immediately. We just got home from a 1000 mile trip and for sure the Ultra RV tune helped the motor as well.

I think you will be pleased with how she runs all tuned up.
Just a report that the Beast is alive!! As some may know, I had the performance tune done at Brazel's weeks ago. Now that new plugs and wires have been installed the performance is definitely noticeable. Seems 4th is now like 3rd before the tune, plugs and wires. And 3rd gear just screams. Definitely a big improvement!
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Old 08-15-2017, 08:39 AM   #6
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Originally Posted by Wbonsell View Post
Just a report that the Beast is alive!! As some may know, I had the performance tune done at Brazel's weeks ago. Now that new plugs and wires have been installed the performance is definitely noticeable. Seems 4th is now like 3rd before the tune, plugs and wires. And 3rd gear just screams. Definitely a big improvement!
Great news Bill. I did the plugs/wires first then the tune. Both very noticeable but the plugs/wires may have made the biggest difference in how smooth the motor runs.

My Itasca is a beast now too. Those poor V10's don't stand a chance.
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Old 08-15-2017, 09:18 AM   #7
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Great news Bill. I did the plugs/wires first then the tune. Both very noticeable but the plugs/wires may have made the biggest difference in how smooth the motor runs.

My Itasca is a beast now too. Those poor V10's don't stand a chance.
The plugs and wires were original...but I have to admit to being surprised at how uniformly bad the plugs looked after only 27,000 miles. Hoping to see a bump in MPG but I'll be ok with whatever the numbers show given the performance improvement.

Now to just order a new serpentine belt along with upper and lower radiator hoses.
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Old 08-27-2017, 09:35 PM   #8
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Hey, guys, is there a youtube video you know of that shows how to change Workhorse plugs on a Vortec 7.4L? I'm trying to build up the courage to change my plugs and having a general idea of where to start would boost my courage.
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Old 08-27-2017, 09:45 PM   #9
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Hey, guys, is there a youtube video you know of that shows how to change Workhorse plugs on a Vortec 7.4L? I'm trying to build up the courage to change my plugs and having a general idea of where to start would boost my courage.


I changed the plugs on our old Pace Arrow years ago. I just crawled in behind the tire and accessed them from there. It was easy but i was 25 years younger and 20lbs skinnier back then.

On the Itasca I took the dog house off and swapped plugs and wires from the top side.

I think you could do it either way but if you can fit under the rig behind the front tires that is an easy way to access the spark plugs on the 454.
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