Thread: Crate Engine, USEFUL INFORMATION

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Missing timing Mark?

A couple of years ago I purchased a 350 HO Deluxe Engine (12496968) from a local GM dealer. Once installed in my rod I could not get the timing mark on the balancer to line up with the T/W pointer. I was able to set the timing by feel and the engine ran fine. As expected the place where I bought the engine was of no help.

I was talking a another rodder at a local show who had the same issue. It seems that the HO Deluxe was fitted with a 8" balancer and you need to re-scribe the timing mark 1-5/8" below the existing mark. Once I did this the mark appeared and I was able to verify my previous timing by feel. To my surprise it was within
spec.

Makes me wonder if GM expected you to install a smaller diameter harmonic balancer. Or that they used whatever was in the parts bin.

Good information for the Chebbie guys.