Valve covers for BBC with roller rockers and stud girdle and vents

I have a 454 LS6 (cast in 1981) that I have just built and it will be going into a street car. The problem is that I cannot find valve covers that will fit it with the Comp Cams steel roller rockers and Comp Cams stud girdle, and, here is the kicker, with vents. I am simply looking for a plane jane chrome cover, and since it is a street car, I assume I need vents, yet all of the covers I have tried so far hit the stud girdle. I have been to eBay, Summit, no one offers a valve cover for my application. I would think that this is a common issue, can anyone help? Thanks

your not going to find any with baffles that clear the stud girdles .the steel roller rockers arms fit under stock short GM covers with thick gaskets made by Mr gasket . they make a mid size covers that look like stock tin Gm covers there are many tall covers that will clear your set up so use the shorter covers with out girdles if iron heads ? there no need to use a girdles on hyd roller cams or iron head small lift cams under 700. soild roller cam engines or go with tall covers . check your stud girdles could be moved down on the rocker girdle nuts .. check this ..at rest make sure the rocker bodys clear under side of girdles . so you can push in the beathers with a short grommets .if you find some room you could use a moroso baffle #68790 but may of the rocker stud girdles work like a baffle. or make one .CV Products makes weld in baffle tubes stand offs that a open filter breather fit over or moroso #68800 many times tall covers the holes are not in the covers so you can move the beather to the back and up corner of cover that way girdles are not in the way

Thanks Pat. Although this is going in a street car, I do plan on taking it to the drags and in general terrorizing my town. I had a custom ground solid roller cam made for it with .736" lift intake/.740" exhaust, and my machinist suggested a stud girdle. This will not always be in my car, it will likely end up in a boat or another GM car.

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Originally Posted by duhamske

Thanks Pat. Although this is going in a street car, I do plan on taking it to the drags and in general terrorizing my town. I had a custom ground solid roller cam made for it with .736" lift intake/.740" exhaust, and my machinist suggested a stud girdle. This will not always be in my car, it will likely end up in a boat or another GM car.

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well with iron heads i ran 740 lift cams with the isky iskyloy #9685 .240 on the seat and 685 open and have not used a girdle. now i not saying that a girdle would not help and if i built it i would talked you in to a Jomar bar set .BUT there trade offs and i could not run tall covers so there just was not any room .so on the new 548 alum head engine i went to the Yella Terra single shaft rocker arms i would not know about any terrorizing all the guys i hang out with do not know how to do any of this stuff i had a 548 14to8 on the street with the 990 rec ports i rework that was a custom grind 748/748 around 273/278 lsa 108 around there. we used it in some engines it was good grind had a copy made by isky.engine made over 750 hp in the mid 800s for TQ did it all under 6500 in one of my old street engines