Sparkplugs for 95 Tbird LX 4.6L V8 - TCCoA Forums
 
LinkBack Thread Tools
post #1 of 7 (permalink) Old 07-23-2019, 06:55 PM Thread Starter
Newbie
 
Join Date: May 2019
Posts: 1
Sparkplugs for 95 Tbird LX 4.6L V8

It's the first time I've ever replaced sparkplugs (myself) on my 95 Thunderbird LX 4.6L V8 and I got a surprise when I pulled out the first sparkplug. It's a Motorcraft AWSF 44PP. And it does look a little different than the SP-493 platinum sparkplugs that Advance Auto sold me. After doing some research I found, as far as I can tell, the Motorcraft AWSF 44PP sparkplug has only ever been specified in regards to the Thunderbird for the 3.8L 232 Cu. In. and the 5.0L 302 Cu. In. engines. I bought the car new and cannot recall ever having the sparkplugs replaced, a big no-no I know, but the car still runs great. So either these are the original sparkplugs which I'm having a hard time believing, or somewhere along the line I had a shop do a tuneup and they put the wrong sparkplugs in my engine. That's much more likely. I went back to Advance Auto Parts and the guy couldn't give me a definitive answer, but said he wouldn't use the SP-493s because he was unable to find on his computer that they were ever a replacement for the AWSF 44PP. Hmm... I think there's a flaw in that logic somewhere. I then went to Riley's down the street and they couldn't tell me anything either. I'm planning to go to the local Ford Dealership and talk to the parts dept. before I go ahead and put the SP-493 sparkplugs in my 4.6L V8. Based on what I can tell the AWSF 44PP would stick into the combustion chamber an eighth of an inch more than the SP-493 would, which would mean that I don't have to worry about the piston smashing into it. The guy at Advance Auto Parts said that the SP-493 would actually stick further into the combustion chamber because it has more threads than the AWSF 44PP, but I think the more threads idea doesn't really work. Since the distance of both plugs is the same from where they seat externally to their tops, all I have to do is make sure that the top of the SP-493 sits no lower in the hole than the AWSF 44PP when they are both snug in the engine. If anybody knows anything more about this issue I'd appreciate any info you could provide as I am not an expert by any means. Thanks. ~Tbird46

Well it's another day, and based on additional research I have concluded that whoever replaced the sparkplugs previously either didn't know what he was doing, or decided that because he didn't have the right sparkplugs he'd reduce his inventory of AWSF 44PPs. The AWSF 44PP are not the right sparkplugs for a Ford 4.6L V8 engine. Sheesh, some people. The only person who could have done that was either someone at a Ford Service Dept. or an independent shop. The SP-493s are the ones they should have used. This was confirmed not only by sparkplug charts found on eBay, but also from information found at "parts.ford.com." Live and learn, my grandpappy always said. Well, at least this time, since I'm doing it, I'll know that I'll have the right sparkplugs running in my car. Thanks to all those who bothered to read my post and for your replies. Ta ta....

Okay boys and girls, just thought I'd do a post market wrap up on what they told me at our local Ford dealership today. There were two young guys, probably in their late 20s to early 30s manning the parts counter. Me? I'm an old fart in my mid-60s. Fortunately there was only one customer in front of me, so it didn't take long for them to get to me. I told them that I was changing the sparkplugs out on a 95 Thunderbird with a 4.6L engine and I showed them the Motorcraft AWSF 44PP that I pulled out of #5 and I also showed them a brand new Motorcraft SP-493 still in its box. I said that based on the research I had done so far, I had concluded that the AWSF 44PPs should never have been put in the old Bird, and that they were actually for the Ford 3.8L and the 5.0L. One of them immediately got on his terminal while the other guy watched over his shoulder and within a minute or less, they confirmed that my assessment was right on target. The correct Motorcraft platinum sparkplugs for the 4.6L Ford engine is the SP-493s.

For anybody wanting some info on changing out sparkplugs on a 4.6L, here is a good Youtube video that is actually quite entertaining. It shows the old boy replacing the sparkplugs on his 2005 Crown Victoria Police Interceptor 4-Door Sedan that has the 4.6L V8. And yes he's putting in the SP-493 platinums. It's definitely good for a few laughs, but I learned quite a bit from it at the same time. Well, that's all folks. Time for me to get my butt in gear and get the rest of those AWSF 44PPs out of my good old '95 T-Bird LX. 4.6L V8 - Hasta la vista! -
Attached Images
File Type: png awsf 44pp sparkplug.PNG (293.2 KB, 39 views)
File Type: png Motorcraft SP-493 sparkplug.PNG (246.3 KB, 1 views)

Last edited by tbird46; 07-25-2019 at 05:53 PM. Reason: Found additional info
tbird46 is offline  
Sponsored Links
Advertisement
 
post #2 of 7 (permalink) Old 07-23-2019, 08:33 PM
5th Gear Poster
 
Wile E. Coyote Jr.'s Avatar
 
Join Date: Sep 2014
Location: New Jersey
Age: 20
Posts: 432
Garage
I run NGKs, they have full threads. My 5.0 had half threads stock, has full threads now. They wont have every spark plug that fits you car behind the counter, or on their computer. Go ask for a brake fluid level sensor for a 03 f350. Theyll say it doesnt have one.

First: Stacie, 1996 Tbird LX, mild build NPI engine, PI cams and intake, Long tube headers, Jmod.

Second: Ellie, 1989 Tbird SC, r̶e̶s̶t̶o̶r̶i̶n̶g̶ ̶t̶o̶ ̶b̶e̶ ̶n̶e̶w̶ ̶d̶a̶i̶l̶y̶. off the deep end

Third: 1997 Dodge Ram 1500, thirsty daily.

Fourth: 1990 Tbird SC, GT40 5.0 mated to m5r2, BBK long tubes, motor out the hood, drift car.
Wile E. Coyote Jr. is offline  
post #3 of 7 (permalink) Old 07-24-2019, 12:22 AM
No, Mr. Lemmywinks, No!!!

Moderator
 
Grog6's Avatar
 
Join Date: Jun 2005
Location: Harriman, TN
Age: 56
Posts: 10,015
Garage
The heads only have four threads.

Fully threaded plugs will work fine.

Always do the plugs with the engine cold, first thing, before driving it, and put anti-sieze on them.

There's a sticky now for replacing them and the wires.

https://forums.tccoa.com/7-engine-4-...placement.html

IIRC, AGSF plugs are single platinum, and are for one bank; IDK which side.

Buy double platinum plugs, or you'll be replacing half of them in ~10k miles.

Plugs are much cheaper at Rock Auto; you may have to search for the partnumber, but they have hotter and colder than stock plugs.

Red '96 Cougar XR-7 240k mi. '02 4R70W, PST DS : '03 PI engine, 04 maf, 24lb injectors, 2.5" exhaust, '02 4r70w + Jmod, DirtyD0g TC + cooler + 3/8" lines, 255 walbro fp. Alpine system.
Black '96 Cougar XR-7 (Lazarus) 210k mi PI Intake, '02 4R70W, Jmod, PST DS, GrogTune, Konis, Mark LCA+Poly, racecougar Custom Engine Chain, and JL and racecougar Bracing.
Black '97 Tbird Limited Edition, '02 4R70W, 255 walbro, PST DS, PBR Brakes&SS lines, Toicko Blues & Springs, GrogTune.


"War Is Peace. Freedom Is Slavery. Ignorance Is Strength." - George Orwell.
Truth Isn't Truth. - Rudy Giuliani, 2018 Award winner, “Most Outrageous Diversion” by MSNBC for this quote

Last edited by Grog6; 07-24-2019 at 12:28 AM.
Grog6 is offline  
Sponsored Links
Advertisement
 
post #4 of 7 (permalink) Old 07-24-2019, 04:28 PM
1st Gear Poster
 
Join Date: Mar 2015
Location: Middle of Nowhere, Texas
Posts: 58
Quote:
Originally Posted by Grog6 View Post
The heads only have four threads.
Mine have 8
Djose13 is offline  
post #5 of 7 (permalink) Old 07-24-2019, 04:42 PM
No, Mr. Lemmywinks, No!!!

Moderator
 
Grog6's Avatar
 
Join Date: Jun 2005
Location: Harriman, TN
Age: 56
Posts: 10,015
Garage
So do my DOHC heads, lol. The C-heads, anyway, IDK about the b-heads.


Red '96 Cougar XR-7 240k mi. '02 4R70W, PST DS : '03 PI engine, 04 maf, 24lb injectors, 2.5" exhaust, '02 4r70w + Jmod, DirtyD0g TC + cooler + 3/8" lines, 255 walbro fp. Alpine system.
Black '96 Cougar XR-7 (Lazarus) 210k mi PI Intake, '02 4R70W, Jmod, PST DS, GrogTune, Konis, Mark LCA+Poly, racecougar Custom Engine Chain, and JL and racecougar Bracing.
Black '97 Tbird Limited Edition, '02 4R70W, 255 walbro, PST DS, PBR Brakes&SS lines, Toicko Blues & Springs, GrogTune.


"War Is Peace. Freedom Is Slavery. Ignorance Is Strength." - George Orwell.
Truth Isn't Truth. - Rudy Giuliani, 2018 Award winner, “Most Outrageous Diversion” by MSNBC for this quote
Grog6 is offline  
post #6 of 7 (permalink) Old 07-24-2019, 04:49 PM
Humble MN12 Genius
Super Moderator
 
XR7-4.6's Avatar
 
Join Date: Apr 2006
Location: Roselle IL
Posts: 16,578
Garage
Send a message via Yahoo to XR7-4.6
Quote:
Originally Posted by Grog6 View Post
So do my DOHC heads, lol. The C-heads, anyway, IDK about the b-heads.

You sure about that? I don’t think Ford started doing 8 threads on C heads (or any modular heads) until 2004. My C heads are 2003 castings and they’re 4 thread

-Matt
XR7-4.6 is offline  
post #7 of 7 (permalink) Old 07-24-2019, 04:54 PM
No, Mr. Lemmywinks, No!!!

Moderator
 
Grog6's Avatar
 
Join Date: Jun 2005
Location: Harriman, TN
Age: 56
Posts: 10,015
Garage
I looked; they're different than all the others.

But they're supposed to be 99 or 01 Conti heads.

I'll look again; I have yet to find you being wrong, lol.



I'll see if a half thread sparkplug threads in.

Red '96 Cougar XR-7 240k mi. '02 4R70W, PST DS : '03 PI engine, 04 maf, 24lb injectors, 2.5" exhaust, '02 4r70w + Jmod, DirtyD0g TC + cooler + 3/8" lines, 255 walbro fp. Alpine system.
Black '96 Cougar XR-7 (Lazarus) 210k mi PI Intake, '02 4R70W, Jmod, PST DS, GrogTune, Konis, Mark LCA+Poly, racecougar Custom Engine Chain, and JL and racecougar Bracing.
Black '97 Tbird Limited Edition, '02 4R70W, 255 walbro, PST DS, PBR Brakes&SS lines, Toicko Blues & Springs, GrogTune.


"War Is Peace. Freedom Is Slavery. Ignorance Is Strength." - George Orwell.
Truth Isn't Truth. - Rudy Giuliani, 2018 Award winner, “Most Outrageous Diversion” by MSNBC for this quote
Grog6 is offline  
Reply

Tags
4.6l , sparkplugs , thunderbird

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the TCCoA Forums forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:
OR

Log-in











Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page



Similar Threads
Thread Thread Starter Forum Replies Last Post
95' Thunderbird LX, SOHC 4.6l V8 Project JLangton2 Newbie Forum 427 06-20-2015 09:09 PM
Today's (04/22) TCCoA pic of the day is Robert M's 95 LX 4.6L V8 Rodeo Joe Massachusetts Chapter 3 04-22-2006 08:00 AM
94 LX V8 vs 95 LX V8 johnwartjr Engine - 4.6L & 5.4L 6 05-14-2003 12:12 AM

Posting Rules  
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome