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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: Nov 2009 Posts: 639 'Bolter | | 'Bolter Joined: Nov 2009 Posts: 639 | When pulling apart my '58 270 for a re-ring and new bearings, I had a hard time finding any kind of timing mark on the fiber cam gear. After cleaning and close inspection I found what I believe to be timing marks . Am I right in thinking the partial circle mark is the timing mark I'm looking for?
Last edited by twotone; 05/19/2013 10:26 PM.
| | | | | Joined: Jan 2001 Posts: 5,337 'Bolter | | 'Bolter Joined: Jan 2001 Posts: 5,337 | Is that mark after the 13th tooth counting clock ways straight out from the key?
If so than that is the mark.
See the USA in your vintage Chevrolet! My Blog | | | | | Joined: Nov 2009 Posts: 639 'Bolter | | 'Bolter Joined: Nov 2009 Posts: 639 | I'll have to check on that tomorrow. So, to be sure, I should count 13 teeth clock ways straight out from the key, then line up the next following gap with the timing marks on the crank gear? | | | | | Joined: Jan 2001 Posts: 5,337 'Bolter | | 'Bolter Joined: Jan 2001 Posts: 5,337 | That is correct.
I did not use a straight edge just eye balled it, but I think your circle will be in that spot.
See the USA in your vintage Chevrolet! My Blog | | | | | Joined: Nov 2009 Posts: 639 'Bolter | | 'Bolter Joined: Nov 2009 Posts: 639 | Thanks Dave  That's one less thing I have to sweat over. | | |
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