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Push rods

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Old May 27, 2012 | 04:57 PM
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Default Push rods

While working on replacing all valve stem seals over the weekend I have stumbled onto another problem. At least two of the push rods are damaged. The problem I am having is finding a proper replacement. I am going ahead and replace all of them. The current rods are .3125 diam. and 7.794 in length solid pieces with rounded ends as seen in pics. This engine was rebuilt in years past by po and a larger cam was installed. What can I replace them with without breaking the bank in cost.
I was looking at these:
http://www.jegs.com/i/Proform/778/66891C/10002/-1

Here is what the push rods look like:

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Old May 27, 2012 | 05:25 PM
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Here's a quick read.GM Perf Parts catalog
Read page 67.And then search out Vendor GMPARTSHOUSE here for a price
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Old May 27, 2012 | 05:25 PM
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They may not be the correct length for the 'revised' valve train geometry. You need to determine the correct length rod size for the cam, heads, rockers and valves in your engine.
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Old May 27, 2012 | 05:39 PM
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Take a look at these:

http://www.summitracing.com/parts/HRS-95205/

Probably gonna need new rockers, too:

http://www.summitracing.com/parts/SUM-G6800/


Keep the shiny side up!
Scott
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Old May 27, 2012 | 06:18 PM
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I might try to take care of that oiling issue also and the underside of the rockers that those sat in
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Old May 27, 2012 | 07:18 PM
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I'd check the rocker and lifter that the damaged pushrods were in. Might have been incorrectly adjusted in the past.
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Old May 27, 2012 | 09:42 PM
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Originally Posted by 7T1vette
They may not be the correct length for the 'revised' valve train geometry. You need to determine the correct length rod size for the cam, heads, rockers and valves in your engine.


With that damage, something's clearly not right and the valvetrain geometry needs to be checked throughout.
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