Stock Gen VI valve covers versus HP 500 covers
#1
Stock Gen VI valve covers versus HP 500 covers
Can anyone tell me the difference between the stock GM cast aluminum valve covers that come on the Gen VI 454/502 engines and the HP500 Merc covers? Is there any difference other than the logo and pretty paint? I have a good set of the stock covers and I was hoping to run them with a set of Comp Cams aluminum bodied full roller rockers. Cam will have about .570 lift. These covers do not have drippers on the underside.
#6
I was running a set of aluminum covers on my 454 that looked just like the covers that Merc put on the old 420's. These just barely cleared, but they did not have baffles for the breathers or oil fill cap. As a result, I had issues with oil seeping out around the grommets.
#8
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I have a Gen VI block that I have HP500 heads on and we are using the stock valve covers with the drippers grinded down. No clearance problems.
#10
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You can bling them up yourself with some scrap pieces of stainless steel laminate and some double-sided tape...
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Last edited by C_Spray; 04-12-2011 at 06:39 PM.