Old 06-18-2024, 01:01 PM
Dhanse67 Dhanse67 is offline
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Join Date: Jun 2024
Posts: 2
Default 1957 Pontiac 347 Camshaft selection

Sorry wasn't sure which forum was the best for this question so I have posted in two of the forums now.

My Father-in-Law and I are rebuilding his 347 and are planning the upgrade to the sbc summit roller tip rockers. My question is in regards to the camshaft. We had the summit K2800 picked out but then read about confirming that the #2 and #4 journals are cross drilled for the rocker arm stud oiling and apparently it is not. We are wondering if since we will be oiling through the pushrods to the rocker arms if it will matter if we use this camshaft? I'm assuming that oil will just not be fed to the rocker arm studs. Thanks in advance for your feedback

Old 06-18-2024, 04:03 PM
tom s tom s is offline
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Join Date: Jan 2000
Location: long beach ca usa
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I have changed over to push rod oiling and never did anything else to the engine.Just make sure the rockers have the oiling hole.Tom

Old 06-18-2024, 07:13 PM
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Bill Hanlon Bill Hanlon is offline
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Location: Fredericksburg, TX
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The drilling on #2 and #4 cam journals are only necessary if you are using the original stud oiling. Like Tom said.

My Pontiac is a '57 GMC with its original 347" Pontiac V8 and dual-range Hydra-Matic.

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