[Schurkey]

Originally Posted by MatthewKlein

Having read the thread I'm not quite sure if the Pole Piece is interchangeable between distributors or not.

If the white wire goes to the proper terminal it is?

To my way of thinking, the "Pole Piece" is the star wheel that turns with the distributor shaft, with some relative motion due to the centrifugal advance (if equipped.) It has no wires.

The Pickup Coil has White and Green wires, that go to W and G terminals on the module.

There's three pickup coils for the usual V8 Coil-In-Cap HEIs with 4-pin modules. They're color-coded, and have different lengths of green and white lead wires. There's also two versions of magnetic polarity. They're NOT intended to be interchangeable, although some folks do.

This is a Pontiac-based web site, the Pontiac pickup coil has a white/clear, or no color coding, and has the longest lead wires, along with backwards magnetic polarity from the Yellow-coded pickup coil. (But same magnetic polarity as the Black/Blue pickup coil.) It would be used with the ignition coil-in-cap having red and white wires.

[MatthewKlein]

Originally Posted by Schurkey

To my way of thinking, the "Pole Piece" is the star wheel that turns with the distributor shaft, with some relative motion due to the centrifugal advance (if equipped.) It has no wires.

The Pickup Coil has White and Green wires, that go to W and G terminals on the module.

There's three pickup coils for the usual V8 Coil-In-Cap HEIs with 4-pin modules. They're color-coded, and have different lengths of green and white lead wires. There's also two versions of magnetic polarity. They're NOT intended to be interchangeable, although some folks do.

This is a Pontiac-based web site, the Pontiac pickup coil has a white/clear, or no color coding, and has the longest lead wires, along with backwards magnetic polarity from the Yellow-coded pickup coil. (But same magnetic polarity as the Black/Blue pickup coil.) It would be used with the ignition coil-in-cap having red and white wires.

I have a distributor that needs a new one. We always just called the whole assy the pole piece, evidently incorrectly. Trying to find an original part and so far they are all chevy.

Swapping the chevy one it is a bad idea?

[MatthewKlein]

Originally Posted by MatthewKlein

I have a distributor that needs a new one. We always just called the whole assy the pole piece, evidently incorrectly. Trying to find an original part and so far they are all chevy.

Swapping the chevy one it is a bad idea?

My distributor is a 1976 bonneville 455 HEI
Does anyone know the original GM part number for the correct pickup coil