Help with plugs.....

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TallyMan

Founding Member

May 29, 2002

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Litchfield, NH

Jul 28, 2004

#1

• Jul 28, 2004

• #1

I am having a hard time finding plugs for my car now.. I just installed a procharger and want to go 1 step colder with my gt-40x heads. The stock plug for these heads is autolite 764. There is no such thing as a autolite 763, so what do I do ??? Anyone know what plug to try for 1 step colder, I would also use NGK or autolite.... Please help, i've tried searching the plug manufacturers sites with no real luck.

Steve

 

N8Miller

I need NOS....make it 2 of the big ones

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Jul 26, 2000

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Kingston, PA, USA

Jul 28, 2004

#2

• Jul 28, 2004

• #2

i can cross reference it at work tommrow. maybe the 763 turned into a new #.

 

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TallyMan

Founding Member

May 29, 2002

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Litchfield, NH

Jul 28, 2004

#3

• Jul 28, 2004

• #3

That would be great, as i am having a hell of a time trying myself. If you could get me 1 step colder and 2 steps colder that would be great.

thanks
Steve

 

cjman15

Banned

Apr 15, 2004

1,009

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Fairfield, PA

Jul 28, 2004

#4

• Jul 28, 2004

• #4

get NGK iridium plugs

 

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TallyMan

Founding Member

May 29, 2002

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Litchfield, NH

Jul 28, 2004

#5

• Jul 28, 2004

• #5

I am planning on the NGK, just cant get them cross referenced to a colder plug...

 

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TallyMan

Founding Member

May 29, 2002

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Litchfield, NH

Jul 28, 2004

#6

• Jul 28, 2004

• #6

Ok heres the results. I just got off the phone with the NGK tech. For GT-40X heads:
1 step colder than factory is Part#TR6IX, stock#3689 (summit 7.99/ea)
2 steps colder is part#TR7IX, stock#3690 (summit 7.99/ea)
These are for the NGK Irridium plugs

Figured i would share the info.

Steve

 

N8Miller

I need NOS....make it 2 of the big ones

Founding Member

Jul 26, 2000

2,661

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Kingston, PA, USA

Jul 28, 2004

#7

• Jul 28, 2004

• #7

or autolite 5143....

 

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TallyMan

Founding Member

May 29, 2002

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Litchfield, NH

Jul 28, 2004

#8

• Jul 28, 2004

• #8

Thanks N8miller. Are those 1 step colder than the autolite 764's???

 

N8Miller

I need NOS....make it 2 of the big ones

Founding Member

Jul 26, 2000

2,661

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0

Kingston, PA, USA

Jul 28, 2004

#9

• Jul 28, 2004

• #9

TallyMan said:

Thanks N8miller. Are those 1 step colder than the autolite 764's???

Click to expand...

yep

 

camarokiller5.0

New Member

Nov 3, 2004

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Dallas

Jul 13, 2005

#10

• Jul 13, 2005

• #10

Sorry to bring up an old post but need to know what the num. for autolite sparkplug one step colder then the 5143, or two steps colder then the 764 for gt40 heads on nitrous Thanks!