Spark plugs 5.0 HO -

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Spark plugs 5.0 HO

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Old 01-27-2011, 04:07 AM   #1
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Vehicle: 1970 coupe + 1966 coupe
Location: loenen, netherlands
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Default Spark plugs 5.0 HO

I got an 5.0 HO out of an '86 Mark VII that i'm putting in my 1970 Mustang coupe. I have removed all of the emission crap and also the EGR stuff. Because all of this has been removed, i suspect that i also should use other sparkplug with a different degree.

Here's the question: which sparkplugs should i get?

Being in the Netherlands, i can get Bosch and NGK very easy. So i would prefer one of these brands.

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Old 01-27-2011, 10:24 AM   #2
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dont run bosch, or anything platinum for that matter. if the mark 7 engine is the same as the 86 stang engine, you will need autolite 2545's (i think)
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Old 01-27-2011, 03:59 PM   #3
Bubba 95SN
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Do not use Bosch, Ford rejects them.
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Old 01-27-2011, 06:53 PM   #4
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Location: California
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Bosch makes great O2 sensors, but terrible spark plugs.
Who cares how much horsepower it has, all that matters is how fast it goes!

Untested 331, lots of suspension, chewing up corners.
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