Hey guys. I'm still trying to collect parts and have been looking for a 302 to rebuild. I keep running across Explorer 5.0's which have the GT40P heads in them. My understanding is that there is something odd about the spark plugs and that headers would be hard to match up. I'm OK with using shorty headers if they would fit in there with the shock towers. So, I guess my question is - Is anyone using GT40P heads in their Comet? If so, what headers are you using? Is it best to keep looking for a standard 302 or one with GT40 non "P" heads? Everyone seems to want an arm and leg for basically a 302 core nowadays..
By the way, my Comet is a 1963 if that matters. Thanks!
GT40P heads in comet?
- Joe Travers
- Posts: 2434
- Joined: Mon Sep 21, 2020 6:23 pm
- Location: Louisiana
Re: GT40P heads in comet?
Not running GT40P but AFR using same 14mm plug and angle, I believe. From what I've read, Sanderson shorties are best fit. Dive into the 5.0L Mustang forums to confirm this. I'm running Hookers in my '63 but they do pose a problem with these heads. #3 loves to burn wire boots because the plug is a very tight fit. The only solution I have found is MSD 90 degree button-type boot for that wire. Still very tight. May need to go Accel shorty header plugs as well.
Joe
Joe
Re: GT40P heads in comet?
Like Joe said, check out the for sale section 64-66 Mustangs, this one isn’t bad, I almost bought this car.
https://www.vintage-mustang.com/threads ... e.1186356/
Motor Safe,
Lee
https://www.vintage-mustang.com/threads ... e.1186356/
Motor Safe,
Lee
-
- Posts: 26
- Joined: Tue Aug 20, 2019 8:56 am
Re: GT40P heads in comet?
Thanks guys. It looks like the main issue is with spark plug wires. I haven't seen anything about the headers not fitting between the shock towers which is my main concern. I'm still getting the car torn down but it won't be too long before I have to start putting things back together. I need to start collecting parts!
- Attachments
-
- Car 2.JPG (60.5 KiB) Viewed 1284 times
Re: GT40P heads in comet?
Do you plan to upgrade the 6 cyl steering and brakes with all that new power?
-
- Posts: 26
- Joined: Tue Aug 20, 2019 8:56 am
Re: GT40P heads in comet?
Yes sir. I think my plan is to use the 65 V8 steering, like the sticky thread, combined with a Borgeson P/S box. I will also do some version of the Granada brake swap. I see CSRP has a 1-1/2" drop spindle that has struck my interest.
I still have a ton of work to do before I start adding parts and I think I have decided to go ahead and tear the car completely down. I have been reading about these wooden tip jigs that put the car on its side and they look like a less expensive way to do things that a rotisserie would do. Knowing my luck though, I'd probably drop the car somehow. We'll see if I have that kind of gumption.
Anyways, I'm hoping to have some of these parts acquired before I need them. My wife will be a lot happier if I buy small amounts along the way instead of buying them all at once.
I still have a ton of work to do before I start adding parts and I think I have decided to go ahead and tear the car completely down. I have been reading about these wooden tip jigs that put the car on its side and they look like a less expensive way to do things that a rotisserie would do. Knowing my luck though, I'd probably drop the car somehow. We'll see if I have that kind of gumption.
Anyways, I'm hoping to have some of these parts acquired before I need them. My wife will be a lot happier if I buy small amounts along the way instead of buying them all at once.
Re: GT40P heads in comet?
Happy to read that!
"Small amounts along the way" lol
A buddy told his wife "don't sell the cars for what I told you I paid" when he's gone.
Fred
"Small amounts along the way" lol
A buddy told his wife "don't sell the cars for what I told you I paid" when he's gone.
Fred
- Jims65cyclone
- Posts: 2764
- Joined: Sun Nov 23, 2014 10:29 pm
- Location: Lexington, SC
Re: GT40P heads in comet?
Mike (Lavron) built a rollover jig for his build. Although I was concerned about the safety of it, it turned out to work very well and made a lot of his work a lot easier. His adventure with the jig starts on about page 105 of his build thread.cparker136 wrote: ↑Mon Aug 16, 2021 12:22 pmI have been reading about these wooden tip jigs that put the car on its side and they look like a less expensive way to do things that a rotisserie would do. Knowing my luck though, I'd probably drop the car somehow. We'll see if I have that kind of gumption.
viewtopic.php?f=9&t=13058&start=1560
He later posted a video of him flipping it by himself.
https://www.youtube.com/watch?v=Pu5LUXtvzho
Food for thought.
Jim
-
- Posts: 26
- Joined: Tue Aug 20, 2019 8:56 am
Re: GT40P heads in comet?
Thanks for the links Jim. That is a better version of what I was thinking, but I like it. I hadn't seen one where you can roll it both ways before. That's pretty sweet!