Are these holes bad? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Rippin-J · 04-04-2009, 09:18 PM

Took the valve covers off of my 396 for the first time today to attempt a valve adjustment. To my surprise I noticed some rather large holes next to half of the push rods (all on the intake side). The holes were all on the (lookers) left of the #1, #5, #4, and #8 intake valves.

the motor has been running, albeit rough, so I am not sure when/how these happened.

How are these caused? Are they catastrophic? Is this considered normal? What should my course of action be at this point?

!!!

Thanks!

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04-04-2009, 09:18 PM	#1
Rippin-J OurLadyofBlessedAccelerat ion Join Date: Aug 2007 Location: Denver, CO Posts: 148	Are these holes bad? Took the valve covers off of my 396 for the first time today to attempt a valve adjustment. To my surprise I noticed some rather large holes next to half of the push rods (all on the intake side). The holes were all on the (lookers) left of the #1, #5, #4, and #8 intake valves. the motor has been running, albeit rough, so I am not sure when/how these happened. How are these caused? Are they catastrophic? Is this considered normal? What should my course of action be at this point? !!! Thanks! Attached Images __________________ _______________________________________________ 1968 Chevy C-20 w/ 396 1997 HD Sportster 1200 street tracker 1994 Chevy 1500 Silverado



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