Regarding the biggermopar performance valve covers
Jesus Christ. I used a step bit with a hand held drill on mine. They are thick, about 3/8” on top, so you can’t knock out anything. Must be drilled. I have several sets, they clear my Hughes Engines rockers just fine, and Harland Sharps on another, even with the baffles which are not shown.
And if they don’t clear all by themselves on some setups, there are billet valve cover spacers available on eBay from a 1/4 to one inch if you want.
Pick your grommet, and then drill your hole.
On another set, I used a larger Forstner bit, (for wood) to drill a counter bore on the backside, drilling only halfway, then coming on top with a smaller sized bit to drill the grommet hole, which will give you a landing on the underside, because these covers are so thick on top.
I don’t have a lathe or special machinery. I’m country, so I find other unorthodox ways that’ll work.
Jesus Christ. I used a step bit with a hand held drill on mine. They are thick, about 3/8” on top, so you can’t knock out anything. Must be drilled. I have several sets, they clear my Hughes Engines rockers just fine, and Harland Sharps on another, even with the baffles which are not shown.
And if they don’t clear all by themselves on some setups, there are billet valve cover spacers available on eBay from a 1/4 to one inch if you want.
Pick your grommet, and then drill your hole.
On another set, I used a larger Forstner bit, (for wood) to drill a counter bore on the backside, drilling only halfway, then coming on top with a smaller sized bit to drill the grommet hole, which will give you a landing on the underside, because these covers are so thick on top.
I don’t have a lathe or special machinery. I’m country, so I find other unorthodox ways that’ll work.
