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E3 sparg plugs?

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The guru once said, the factory validates OEM parts, if you buy aftermarket parts YOU do the validation. If you have trouble down the road, you may overlook the plugs because they are new. If they were AC plugs you COULD overlook them, after market plugs will always be suspect.

A few years ago I put a Bosch in an 86 Corvette and promptly took them out because it would hardly idle.

Pre-1995 - DTC codes OBD1  >>

1996 and newer - DTC codes OBD2 >> https://www.obd-codes.com/trouble_codes/gm/obd_codes.htm

How to check for codes Caddyinfo How To Technical Archive >> http://www.caddyinfo.com/wordpress/cadillac-how-to-faq/

Cadillac History & Specifications Year by Year  http://www.motorera.com/cadillac/index.htm

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Yep, AC Delco plugs are proven by a world-class engineering staff.

Anything you hear about other plugs is mostly anecdotal information. I'd recommend sticking with the proven winner. You simply can't go wrong.

With other plugs you risk stepping over dollars to pick up pennies.



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All of these "funky" dual electrode, tri electrode, quad electrode spark plugs have been PROVEN to accomplish nothing... In independent test after test... No difference. Car Craft magazine did a test about 3 months ago and in the high compression SBC they were testing... Old School single electrode AC Delco plugs made the most power (and cost the least too).


Easin' down the highway in a new Cadillac,

I had a fine fox in front, I had three more in the back

ZZTOP, I'm Bad I'm Nationwide


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