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Apr 26th, 2026 | | AD Chevy Trucks  Over 6,000 pictures Brad Allen has an awesome collection of Chevrolet factory pictures that he has set up from film strips. Check them out!
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| | | | Joined: Oct 2003 Posts: 24 Apprentice | | Apprentice Joined: Oct 2003 Posts: 24 | I have a 57 with a 235. I was cleaning the distributor and noticed 2 groves in the middle of the shaft. Would these be for an o-ring seal? If so what size would they be? | | | | | Joined: Oct 2006 Posts: 9,671 'Bolter | | 'Bolter Joined: Oct 2006 Posts: 9,671 | If your talking about the two groves about 1.5" below the un-machined portion of the housing, no! The bottom one is obviously for a little oil to get to the shaft and I always thought that the next one up acted like a break or kind of like a trap so oil wouldn't wick up through the boss in the block by capillary action.
Denny Graham
Sandwich, IL
Denny G
Sandwich, IL
| | | | | Joined: Oct 2003 Posts: 24 Apprentice | | Apprentice Joined: Oct 2003 Posts: 24 | Thanks for the info. I didn't think so, but a friend was watching me clean the thing and asked about o-rings. | | |
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