spark plug gap

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Nov 27, 2008 | 10:25 PM

q8stang

Thread Starter

3rd Gear Member

Joined: Jun 2007

Posts: 678

From: wa seattle!!

spark plug gap

i have a stock 1990 mustang gt and i want to know what is the propper gap for it i was told .54 and .50 but i would like to make sure what is the best gap to gap it thanks.

Nov 27, 2008 | 11:02 PM

jtmustang

5th Gear Member

Joined: Nov 2006

Posts: 3,743

From: arlington,WA

yep somewhere right in there..

Nov 27, 2008 | 11:45 PM

cleanfitty

4th Gear Member

Joined: Nov 2006

Posts: 1,016

From:

.054 should be factory

Nov 28, 2008 | 07:17 AM

Timspony

SVT Section Moderator

Joined: Jul 2008

Posts: 15,600

From: Burnt Hills, NY

0.054 correct for that year 5L Mustang, but I always gapped mine at 0.050 on stock applications...

Nov 28, 2008 | 07:34 AM

mustangsneverdie

5th Gear Member

Joined: Oct 2007

Posts: 2,624

From: Georgia

could you lose power if their gapped smaller idk like .035

Nov 28, 2008 | 04:44 PM

q8stang

Thread Starter

3rd Gear Member

Joined: Jun 2007

Posts: 678

From: wa seattle!!

^^
good question

Nov 28, 2008 | 05:21 PM

nacanitihs

5th Gear Member

Joined: Mar 2006

Posts: 3,035

From: Massachusetts, New Bedford

i would think so. u might not get the proper combustion in the cylinder. i always gap mine at .052

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