Ford 302 but Edelbrock Performer heads. Fuel injected and fairly aggressive cam. What plugs do I put in this thing?
Ford 302 but Edelbrock Performer heads. Fuel injected and fairly aggressive cam. What plugs do I put in this thing?
What's the compression ratio?
In reply to rslifkin :
ummm...... dunno.
Are the pistons flat top or do they have a dome?
What's the size of the combustion chamber?
Check with Edelbrock if you don't know?
With that info you should be able to figure out C:R.
Also most likely the plugs required will have a gasket and not be a tapered seat as Ford used on may of their cast iron heads.
These are the heads and this is a relevant post from 12 years ago that the internet puked up about them.
Bottom end of the engine is factory 5.0 from a 2000 Explorer.
OK, so it appears these plugs are the ones to get. Is there a particular model number that anyone out there recommends?
Try stock Autolites, or Motocraft. run them, I forget what the gap is. The stock plug should be able to handle it. Pull and read the plugs.
Based on all of that, I'd say either a stock plug (or one with the right seat and same tip projection, etc.) or you could go 1 heat range colder for more knock margin.
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