Center bolt valve cover spacers?
05-27-2009, 02:13 AM
#1
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Center bolt valve cover spacers? I kinda had my heart set on using my stock valve covers with my 7/16 pro mags since many are able to just bend/grind the support webbing for rocker clearance, but I have a different problem. The polylocks with my rocker arms touch the cover ceilings just enough to not allow enough squish on the gaskets. I'd like about 1/4" more clearance.
Does anyone know where I might find some center bolt valve cover spacers? Do they even exist? I can't seem to find any anywhere.
I'm thinking about getting some of those centerbolt-to-perimeter-bolt adapters and cutting them for my purposes.
Does anyone know where I might find some center bolt valve cover spacers? Do they even exist? I can't seem to find any anywhere.
I'm thinking about getting some of those centerbolt-to-perimeter-bolt adapters and cutting them for my purposes.
05-27-2009, 09:23 PM
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My 7/16" Pro Mags fit under my clearanced valve covers just fine.
You most likely have long adjusting nuts. Call your rocker manufacturer and see if they can send you a short adjusting nut.
It would still be interesting to know if such a thing as center bolt valve cover spacers exist. Anyone?
05-28-2009, 11:52 AM
#6
These are on AFR eliminators. Maybe it's possible the sealing rails are just a bit lower on the aftermarket head castings?
The nuts are the same ones that come with every set of pro mags (actually, these are the stainless "hi-tech versions" because I traded up due to rocker ratio issues....maybe there's a difference). Good idea, I'll call anyway.
It would still be interesting to know if such a thing as center bolt valve cover spacers exist. Anyone?
The nuts are the same ones that come with every set of pro mags (actually, these are the stainless "hi-tech versions" because I traded up due to rocker ratio issues....maybe there's a difference). Good idea, I'll call anyway.
It would still be interesting to know if such a thing as center bolt valve cover spacers exist. Anyone?
05-28-2009, 12:29 PM
#7
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Are they the PBM's? Part number PBM186-16? If so, I ran these same knock offs and the adjusting nut was indeed taller. There really is nothing in the anatomy of a stud mounted rocker arm configuration that would block you from using these rockers. I solved this by getting HiTech adjusting nuts from Summit.
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05-28-2009, 12:37 PM
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I had that same problem and ended up buying GM licensed PROFORM covers from Summit. They're 1/4" taller and solved my poly-lock clearance problem. I preferred to keep the heavy duty polys.
Jake
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Jake
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05-29-2009, 05:15 PM
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Are they the PBM's? Part number PBM186-16? If so, I ran these same knock offs and the adjusting nut was indeed taller. There really is nothing in the anatomy of a stud mounted rocker arm configuration that would block you from using these rockers. I solved this by getting HiTech adjusting nuts from Summit.
Just get some taller valve covers like Canton's.
I had that same problem and ended up buying GM licensed PROFORM covers from Summit. They're 1/4" taller and solved my poly-lock clearance problem. I preferred to keep the heavy duty polys.
-Josh
