I finally got my new motor in my S10 but noticed the timing was jumping around @ 3000 rpm and above. I considered two possible reasons for this happening.
1. Cam walk
2. Distributor gear end play.
So I pulled the distributor out at about 300 miles and noticed a lot of wear. :nono:
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It had a good amount of end play on the gear shaft so I locked out the distributor (MSD 85551) and shimmed the gear. Slapped her back in and was happy to see rock solid timing and the motor just ran better.
I am hoping this solves the problem if not what are some other things to consider if the gear keeps wearing down fast?
I almost want to get a belt drive for my timing to ensure my cam is not walking If the problem keeps happening.
1. Cam walk
2. Distributor gear end play.
So I pulled the distributor out at about 300 miles and noticed a lot of wear. :nono:

It had a good amount of end play on the gear shaft so I locked out the distributor (MSD 85551) and shimmed the gear. Slapped her back in and was happy to see rock solid timing and the motor just ran better.
I am hoping this solves the problem if not what are some other things to consider if the gear keeps wearing down fast?
I almost want to get a belt drive for my timing to ensure my cam is not walking If the problem keeps happening.