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OEM valve covers on performance heads

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Old Sep 28, 2016 | 11:56 PM
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Default OEM valve covers on performance heads

My engine has Edelbrock valve covers but I don't like them.





Seeking to replace these with OEM ones with drippers





Can I use them with my Holley #12111 heads?
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Old Sep 29, 2016 | 12:03 AM
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Most likely. Rocker clearance is the usual issue, you may have to mill off the drippers and/or find a way to narrow the baffles for PCV.
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Old Sep 29, 2016 | 12:27 AM
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Originally Posted by Shark Racer
Most likely. Rocker clearance is the usual issue, you may have to mill off the drippers and/or find a way to narrow the baffles for PCV.
I think the Holley heads was a kit fully dressed up, don't know what kind of rockers I am running though

Maybe adding a spacer would a the solution if needed, but no the best one since would increase probabilty of leaks.
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Old Sep 29, 2016 | 06:53 AM
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I have the OEM L-82 valve covers on my rebuilt L-82 355 with AFR heads:


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Old Sep 29, 2016 | 09:57 AM
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Originally Posted by corvetero
I think the Holley heads was a kit fully dressed up, don't know what kind of rockers I am running though

Maybe adding a spacer would a the solution if needed, but no the best one since would increase probabilty of leaks.
First step would be to pull a cover and see what rocker you have. Then, buy the stock covers and see if they need mods.
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Old Sep 29, 2016 | 09:59 AM
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I'm able to use my oem finned covers also without any modifications on my AFR 195's. The AFR heads have a raised rail for the valve cover thereby permitting the use of oem cover. Not sure about other head designs. You could also double gasket or add a spacer.
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Old Sep 29, 2016 | 10:31 AM
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Originally Posted by resdoggie
I'm able to use my oem finned covers also without any modifications on my AFR 195's. The AFR heads have a raised rail for the valve cover thereby permitting the use of oem cover. Not sure about other head designs. You could also double gasket or add a spacer.
Same here...running Dart Pro1 Platinums..........
Using stock LT-1 valve covers and Comp Magnum roller tip rockers with Polylocs.......the polylocs clear fine.....
I ran these rockers to break in the cam.....but it appears that the Harland Sharp rollers I have should be fine too......the drippers fall where the polyloc is and that is the highest point.
The engine is a 406 that makes about 500 ponies.....sneaky eh?

Jebby
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