Thread: Running 1.6 rockers on -461 heads

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Thanks Dave.

Is this a common, straighforward job that can be done when the heads are being redone at the machine shop, or will I need to mock up the engine and mark exactly where the pushrod holes need to be enlarged first? It looks like there are some simple tools available for doing this but I don't think I'd attempt it myself at home (especially on iron heads) without a drill press:

Pushrod Slotting Tools - Tools & Shop Equipment - SummitRacing.com

No, it's not a racing engine; it's the original "numbers matching" motor out of my '65 Impala SS. I'm going to rebuilding it soon and plan on some internal upgrades while keeping a stock appearance. I saw a pic of those valve cover spacers; I think they're available up to an inch thick. While they would allow me to use full roller rockers, they'd look kinda goofy on an otherwise all-stock engine :-)