Several years ago I reworked a set of std port Indy SR heads that went on a 493 with a Ede 6bbl manifold. My recollection is it was a 10 second street/strip combo. After about a year or so the owner wanted to try and step it up a bit, so he bolted on an untouched std port Mod Man 6bbl manifold. Ran the same speed/ET.
That would have provided the option to open up both the heads and manifold to MW size. I don’t know if that ever happened or not.
68 Satellite, 383 with stock 906’s, 3550lbs, 11.18@123 Dealer for Comp Cams/Indy Heads
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