The early 261 1954-1955 uses the pertronix #1167 and that is for the 12 volt system. I called pertronix and double checked mine,i have a 1954 261 engine.

I was told that the early 261 and late 261 took a different size of magnet that slips on the distributor cam.The sales rep at pertronix said,the later 261 distributor cam is a different diameter.I don't know if they are smaller or larger ? Maybe someone can chime in on this.


1951 3100 Chevrolet
1951 Chevrolet Suburban Carryall
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