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PostPosted: Wed Jan 01, 2020 7:20 pm 
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Doing a fresh build on my 351C, after getting the block back from the machine shop. They inserted the new cam bearings for me. After checking some tolerances from the 1972 Ford shop manual, I noticed that the front cam bearing was set too far towards the back of the block. The Ford spec appears to call for 0.003" - 0.005". "Distance in inches that the front edge of the bearing is installed towards the rear from the front face of the cylinder block."

I'm measuring somewhere around 0.022". This appears to be way out of spec.

Can I tap that forward, or will my crude tools likely cause warpage in the bearing? Feel like I probably need to have the shop fix it, since they did it in the first place. Thoughts?

How critical is this spec?
Thanks!
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PostPosted: Wed Jan 01, 2020 9:17 pm 
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It will be just fine.

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PostPosted: Thu Jan 02, 2020 10:30 pm 
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Thanks. That's what the machine shop said as well. Another Ford enthusiast told me that the spec was to ensure the bearing didn't get set flush with the block face, which would prevent adequate amount of oil on the thrust plate. Guess I'll let it ride as is.


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PostPosted: Fri Jan 03, 2020 7:52 am 
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That's how I set all of mine. Works perfectly fine. I like them back a little bit so more oil does get to the thrust plate.

Also, try driving a cam bearing in with a .002-.003" tolerance. :shock:

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