Spark Plugs

2

29FORD

New Member

Nov 4, 2020

11

1

3

newfoundland,Canada

Dec 12, 2020

#1

• Dec 12, 2020

• #1

I am in process of committing a crime, I have a 86 5.0 and have butchered the EFI and replaced with Carb. using engine in 1929 Model A pickup and have absolutely zero room for components . My Question is, Spark plugs used for EFI or Plugs for Carb are they the same ? Also what is the firing order for this 86 engine?

 

7991LXnSHO

wanna catch the space herp

10 Year Member

Sep 1, 2010

7,387

2,745

194

Kearney, NE

Dec 12, 2020

#2

• Dec 12, 2020

• #2

The model A pickup engine will not have the same spark plugs. You can still get several brands of plugs for the AA engine from Rock Auto!

Serious answer, I assume your truck has a 302 that’s been squeezed in it, right? Go with the right plugs for the year and brand of head you have. The electronic ignition allowed wider plug openings, not the switch to EFI. If you retrofit parts from a Ford electronic ignition or an HEI module, you can keep the wider gap.

 

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90sickfox

Wasn't a pretty sight...and I've got big hands

SN Certified Technician

Mar 2, 2015

6,946

5,818

213

Dec 13, 2020

#3

• Dec 13, 2020

• #3

The brand of choice is Autolite...regular copper autolites and you'll be fine.

 

2

29FORD

New Member

Nov 4, 2020

11

1

3

newfoundland,Canada

Dec 13, 2020

#4

• Dec 13, 2020

• #4

90sickfox said:

The brand of choice is Autolite...regular copper autolites and you'll be fine.

Click to expand...

would you know the correct plug number ?

 

JD1964

there is enough sticking out to grab on to

15 Year Member

Jun 28, 2013

3,472

1,562

194

Maryland

Dec 13, 2020

#5

• Dec 13, 2020

• #5

Autolite 2545, if the heads on the motor are the stock heads from the 86 mustang

1986 FORD MUSTANG 5.0L 302cid V8 Spark Plug | Shop Now at RockAuto

Ignition Parts and More for Your 1986 FORD MUSTANG at Reliably Low Prices. Fast Online Catalog. DIY-Easy. Your Choice of Quality. Full Manufacturer Warranty.

www.rockauto.com

 

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7991LXnSHO

wanna catch the space herp

10 Year Member

Sep 1, 2010

7,387

2,745

194

Kearney, NE

Dec 13, 2020

#6

• Dec 13, 2020

• #6

There is not a bad copper plug on that list. NGK, ACDelco, Motorcraft, Denso, Champion are all OEM quality equipment. E-3 and Splitfire copper plugs are deals at that price.
The exotic tip plugs would be money better spent on an engine with a more tightly controlled A/F ratio. They run fine, but they will not last 100k miles without fouling in a car without precise tuning and electronic ignition.

 

Reactions: General karthief