C1 (and C2 and C3) Pilot Bushings

[Christopher R.]

I've got 4 1955 to 1981 small block Chevy pilot bushings in front of me. Looks like they're all the same size. But I wasn't able to accurately measure them. Characteristics:

1. RAM Clutch # BU656: Moderately magnetic, beige in color (dark brass), sealed in plastic, doesn't appear greasy.

2. NAPA (Balkamp) #615-1161: Moderately magnetic, slightly beige, looks more like steel, packed loose in a box, not at all greasy.

3. Paragon #385: Moderately magnetic, beige in color (dark brass), packed loose in a plastic bag, not at all greasy.

4. Chevrolet (AC Delco) #10125896: Not magnetic, dark brass, packed loose in a plastic bag, doesn't appear greasy. Inside diameter is serrated.

The only one of the above that is not magnetic is the Chevy one.

The only one of the above with a serrated inside diamter is the Chevy one.

I've handled Oilite bushings. They're greasy. None of these bushings are greasy.

[Timothy B.]

Re: C1 (and C2 and C3) Pilot Bushings

Christopher,
Sounds like the chevy bushing is the way to go. I purchased mine from Ed Hartnett and he told me the replacement bushings from NAPA etc. are not brass oilite. I did not want to take a chance with a new rebuilt transmission with a new input shaft.