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12-21-2007 #1
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- Nov 2001
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- St. Cloud, MN
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Perimeter bolt valve cover conversion
Somewhere in my internet surfing I ran across a head porter that had a weld-in bung that they used for doing perimeter bolt valve covers but I forgot to bookmark it. As anyone else run across this? It shouldn't really matter but it was for aluminum LT1 heads.
Jon
71 Nova LT1/4L60E
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12-25-2007 #2
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- Jun 2007
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- Farmingville, New York
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If you're looking to put perimeter bolt valve covers on center bolt heads you can get an adapter right out of the GM Performance Parts catalog. I think Proform might make them as well. I actually had a set on my old L98 aluminum heads so I could run roller rockers without grinding.
12-25-2007 #3
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I have a set that I had a friend at work make but I'd rather not use them and two sets of gaskets if I don't have to. They may need a but of clearance to fit under the Pro Magnums.
Jon
71 Nova LT1/4L60E
12-26-2007 #4
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- Jun 2007
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- Farmingville, New York
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Here's what I'm talking about.
JEGS 50120 Valve Cover Adapters 1987-Newer Head to 1959-86 Valve Cover Sold as Pair Item# 555-50120 Only $129.99
or
GM Performance 24502540 Valve Cover Adapter SB-Chevy Item# 809-24502540 Only $155.99
They both use an o-ring instead of a second gasket. I did have to grind them a little bit to clear the trunions though. Other than that they worked great for me. Hope this helps!
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