GT40P Heads, Mac Shorty Headers, What Wires To Go With?

FranMan · December 15th, 2007, 03:43 PM

So I bought a car with GT40P heads and mac shorty headers. The wires on the car were shot so I bought some Ford Motorsports 9mm with 3 wires promptly melted. Is there special wires or plugs I should be using? I was shocked how easy the plugs melted away. I thought they were made out of hard core silicone.

ryans88gt · December 15th, 2007, 03:45 PM

P heads are known for that due to the spark plug location. Get some boot insulators to cover the wires.

Summit Spark Plug Boot Protectors - summitracing.com

FranMan · December 15th, 2007, 04:05 PM

Does it matter if the boot/wire touches the header?

HMUSN · December 15th, 2007, 04:11 PM

I would say yes it matters.
you don't want to melt wires

ryans88gt · December 15th, 2007, 04:16 PM

The protectors will keep the wires from touching the headers, only the protector will touch the headers and save the wire.

FranMan · December 15th, 2007, 04:32 PM

Originally Posted by ryans88gt

The protectors will keep the wires from touching the headers, only the protector will touch the headers and save the wire.

That's what I meant. The wire will still be resting on the header tho it will just have the protector boot in between.

FranMan · December 15th, 2007, 04:36 PM

Oh is there anyway to fix the burnt wire boots or just buy the 3 wires that are messed up? I'd rather not spend another 60 bucks for a set of wires

JBIGBOOTSY · December 15th, 2007, 09:37 PM

Originally Posted by FranMan

Oh is there anyway to fix the burnt wire boots or just buy the 3 wires that are messed up? I'd rather not spend another 60 bucks for a set of wires

I will catch immediate hell for this but, Hi-temp RTV has got me out of a pinch a few times.

FranMan · December 15th, 2007, 11:03 PM

Originally Posted by JBIGBOOTSY

I will catch immediate hell for this but, Hi-temp RTV has got me out of a pinch a few times.

nice

e3sean · December 16th, 2007, 02:23 AM

i am going to take pictures of my p heads with the headers on and the wires in i dont think they are name brand but they have huge tubes and the wire doesnt touch the header. i got luckey i thought i was going to have to buy new headers.

e3sean · December 16th, 2007, 02:47 AM

CAMN89GT · December 16th, 2007, 04:56 AM

Originally Posted by FranMan

Oh is there anyway to fix the burnt wire boots or just buy the 3 wires that are messed up? I'd rather not spend another 60 bucks for a set of wires

I would IMHO just buy a complete brand new set.

e3sean · December 16th, 2007, 05:01 AM

Originally Posted by FranMan

Oh is there anyway to fix the burnt wire boots or just buy the 3 wires that are messed up? I'd rather not spend another 60 bucks for a set of wires

u can buy the boots only just make sure u get the 90 degree angle boots.
if they were old i would say get new ones but u just bought those.. did u use the 90's cause i think those come with buth or u choose when u buy them.i cant remember.

FranMan · December 16th, 2007, 09:37 AM

Originally Posted by e3sean

u can buy the boots only just make sure u get the 90 degree angle boots.
if they were old i would say get new ones but u just bought those.. did u use the 90's cause i think those come with buth or u choose when u buy them.i cant remember.

They aren't 90's almost but I wouldn't say they are. I had some high temp RTV and I coated them last night. I am going to head up to the store and get some header wrap. I also have some high temp fuel/wire shield and I am going to wrap around the plug boot. Where can you buy the new boots at?

Speedstang302 · December 16th, 2007, 10:50 AM

deff do the protector and i reccomend msd super conductors...they've been great on an couple of my applications

e3sean · December 16th, 2007, 03:57 PM

Originally Posted by FranMan

They aren't 90's almost but I wouldn't say they are. I had some high temp RTV and I coated them last night. I am going to head up to the store and get some header wrap. I also have some high temp fuel/wire shield and I am going to wrap around the plug boot. Where can you buy the new boots at?

i am pretty sure autozone should sell them if not look on ebay but if u are getting header wrap and covers for the boot u should be fine.. if it just melted the boot and not the wire itself then there should be no real harm done..just rtv it wrap it real good and u should be fine.

FranMan · December 18th, 2007, 08:09 AM

Originally Posted by e3sean

i am pretty sure autozone should sell them if not look on ebay but if u are getting header wrap and covers for the boot u should be fine.. if it just melted the boot and not the wire itself then there should be no real harm done..just rtv it wrap it real good and u should be fine.

It seems to have done the trick. I drove it to work yesterday with no problems.

e3sean · December 18th, 2007, 01:32 PM

Originally Posted by FranMan

It seems to have done the trick. I drove it to work yesterday with no problems.

good glad to help.

December 15th, 2007, 03:43 PM	#1
FranMan Regular Join Date: Aug 2007 Posts: 52 iTrader: 0 reviews	GT40P Heads, Mac Shorty Headers, What Wires To Go With? So I bought a car with GT40P heads and mac shorty headers. The wires on the car were shot so I bought some Ford Motorsports 9mm with 3 wires promptly melted. Is there special wires or plugs I should be using? I was shocked how easy the plugs melted away. I thought they were made out of hard core silicone.

December 15th, 2007, 03:45 PM	#2
ryans88gt MM Fanatic Join Date: May 2007 Location: Bloomington, IL Posts: 4,737 iTrader: 0 reviews	P heads are known for that due to the spark plug location. Get some boot insulators to cover the wires. Summit Spark Plug Boot Protectors - summitracing.com __________________ 88 GT CHI headed 351w 10.8 @ 125 - still figuring it out. 03 Cobra 2.3 whipple 10.7 @ 129 - sold it 04 Mach 1 12.7 @ 109 mostly stock - sold it 89 LX procharged 302 515 hp 497 ftlbs 10.7 @130 mph - sold it

December 15th, 2007, 04:11 PM	#4
HMUSN Doc 1986 SVO 48.47@ 12.58 Join Date: Nov 2006 Posts: 37,050 iTrader: 11 reviews	I would say yes it matters. you don't want to melt wires __________________

December 15th, 2007, 04:16 PM	#5
ryans88gt MM Fanatic Join Date: May 2007 Location: Bloomington, IL Posts: 4,737 iTrader: 0 reviews	The protectors will keep the wires from touching the headers, only the protector will touch the headers and save the wire. __________________ 88 GT CHI headed 351w 10.8 @ 125 - still figuring it out. 03 Cobra 2.3 whipple 10.7 @ 129 - sold it 04 Mach 1 12.7 @ 109 mostly stock - sold it 89 LX procharged 302 515 hp 497 ftlbs 10.7 @130 mph - sold it

December 16th, 2007, 10:50 AM	#15
Speedstang302 I Post Entirely Way Too Much 1996 Mustang GT 13.64@101mph Join Date: Apr 2007 Location: Massachusetss Posts: 5,828 iTrader: 1 reviews	deff do the protector and i reccomend msd super conductors...they've been great on an couple of my applications __________________ 1990 GT- GT40p Heads\| Anderson N41 cam\| Crane 1.6 RR's\| Trickflow Intake\|MGW Short Throw\| Aluminum d/s\| 3.73's.....still slow....

December 15th, 2007, 04:05 PM	#3
FranMan Regular Join Date: Aug 2007 Posts: 52 iTrader: 0 reviews	Does it matter if the boot/wire touches the header?

December 15th, 2007, 04:36 PM	#7
FranMan Regular Join Date: Aug 2007 Posts: 52 iTrader: 0 reviews	Oh is there anyway to fix the burnt wire boots or just buy the 3 wires that are messed up? I'd rather not spend another 60 bucks for a set of wires

December 16th, 2007, 02:23 AM	#10
e3sean I Post Entirely Way Too Much 1988 lx 9.68@142 Join Date: Nov 2007 Location: goldsboro NC Posts: 5,609 iTrader: 0 reviews	i am going to take pictures of my p heads with the headers on and the wires in i dont think they are name brand but they have huge tubes and the wire doesnt touch the header. i got luckey i thought i was going to have to buy new headers.

December 16th, 2007, 02:47 AM	#11
e3sean I Post Entirely Way Too Much 1988 lx 9.68@142 Join Date: Nov 2007 Location: goldsboro NC Posts: 5,609 iTrader: 0 reviews

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