I am enjoying this very same experience, a 1953 with a 60 235 that is unknown. I would first check the compression. Nothing else matters if your compression is low or inconsistent between cylinders. Bottom of this article:

http://devestechnet.com/Home/TuneUpGuide

You came to the right place.. lots of expertise right here.

Deve

1950 Chevy 3100 Deluxe Cab
1950 Chevy 3100 Standard Cab
In the Stovebolt Gallery
The Think Tank
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