Hi everyone

Looking at suggestions for our FE 360. We're rebuilding this engine and running a 40,000 v Pertronix coil with 1.5 ohms, the pertronix magnetic ignitor in the distributor. I know the typical OEM plugs, just wondering if anyone else has a similar setup and what plugs you use.

 

Which INGITOR or you usiing I, II or III?

 

This is the one we've bought
Pertronix 1281

 

That is the IGNITOR 1 (1281).

INSTR call for points style coil which will require a resistor before it. If you use a hot coil it may damage the module.

Here is the INSTR SHEET. There is a TECH NO. Call it to ensure you use the correct coil. https://www.manualslib.com/manual/14...or.html#manual
If you want a hot coil, you need to so with 91281 (IGNITOR II).FULL CATALOG - https://pertronixbrands.com/blogs/re...nition-catalog

 

ah thanks for this intel...I will call them as it was a bit unclear about which coil to use...

 

Champion, and they're the champion on the dyno too.

in reality it makes no difference. I prefer Champion and AC, but that's based on not much.

 

If you use the IGN I, you will want MOTORCRAFT COPPER CORE (cheap).

If you go to IGN II or III, consider PLATINUM TIP as they will be kept clean by the hotter ignition. Also read about increased plug gap.

 

I have always used Motorcraft spark plugs in Fords.
Motorcraft and Autolite are not the same spark plugs.
I always preferred AC Delco spark plugs in GMs
I've never cared for Champions except for IH, Chrysler and lawnmowers.
I can't tell you how many thousands of vehicles I have tuned up over the years but if I had to pick one brand of spark plugs for everything it would be Denso.
Back in the day they were Nippondenso. I guess they saved millions on ink by shortening the name. LOL

At one time Autolite was owned by Ford, along with Philco, Fisk tires and other companies.
The government stepped in because ole Henry was building a monopoly so everything he needed to manufacture vehicles he bought from himself.

Autolite was purchased by Fram Bendix who just bought the name.
Autolite became Prestolite and so the original Autolite spark plugs were now produced by Prestolite.
Prestolite manufactured alternators and other electrical components including the electronic ignition use by early AMC.

In all reality I doubt that any one brand is any better than another in these dirty old engines.
Except Dodge V-10. And they really love Champion spark plugs.

 

I don't usually use platinum plugs in a carb engine. E3 plugs seem to be very good at lasting and burning clean.

 

CHAMPION and AUTOLITE (but won't) have moved production off-shore and the quality is questionable.

It is a new era.

 

Absolutely use the Motorcrafts
If you have a hotrod coil, use the platinum ones
I'd use them anyway
that plug is a BSF-44P or new number SP-452 or SP-452X
The older copper plug (ASF-32C) is also sufficient, as they ran the copper ones for years with 40kv E-core ignition coils.
They ran those copper ones up to 1994 or 1995 with big voltage coils before switching to platinum in 1996 IIRR

 

The advantage to platinum plugs is the two electrode have pointed tips rather than flat like conventional plugs and platinum is harder and lasts longer.
The advantage to the two pointed electrode is that it requires less voltage to ionize the gap between two sharp points than it does two flat surfaces.
This leaves more voltage to flow between the electrodes for a longer period of time igniting more fuel in the combustion chamber.
Because of the tiny points the can foul easier in these old dirty engines.

The ability of copper to transfer heat better than steel allows the spark plug to act more like a variable heat range spark plug.
It can transfer heat from the spark plug to the cylinder head quicker to help keep the spark plug cooler under heavy loads.

On these old engines under wide open throttle conditions the spark plug gap will increase by another 0.005".