I have heard that roller rockers do not fit under the cobra aluminum valve covers. Is it a design issue or a brand issue? IE, is it only certain brands of roller rockers that don't fit? Also, I have seen some stuff about the baffles in the aluminum valve covers being removed and replaced with a custom bent piece of sheet metal. Is this possible, ie, does the valve cover itself clear the rollers and the baffle doesn't?
There is VERY LITTLE clearance, but I have a set of Crane 1.7 Rollers and they do clear the cobra valve covers. I thought I was going to have a problem, but didn't. I didn't bend the metal splash plate with a hammer to get a little extra clearance - I don't know if this was needed or not.
Some people do have problems, but you can get thicker valve cover gaskets (felpro's) that are about double the thickness of standard gaskets to get you some extra space.
YOU all laugh because I'm different, I laugh cause you're all the same
I bought the tall COBRA covers from Branda and I think they look pretty good, you can see them on my web page (I painted mine and sanded the fins). The baffles are close but I didn't have to modify them. I think if I had gone with a different roller rocker (I went with the billet TFS rockers) I could've used stock sized covers. The Comp Cams Pro Magnums look like they'd fit without the tall covers.
Branda also sells the tall cobra valve covers but they are around $180. I have the regular cobra covers with the baffel cut out but it sucks the oil out. Check the location of the hole in relation to the rocker arm and you'll see what I mean.
I have a 302 & a 351W with roller rockers. The 302 has Ford Motorsport low profile rockers and the 351W has CompCams roller tip rockers. Both easily clear the chrome Motorsport valve covers with no bending or other modifications.
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