I've also got a set of 061s that I took off a 400 motor. Originally from a '67 Cat with 400 and 2bbl. Big valves, have all exhaust bolt holes, early accy bolt system, no EGR, push-in studs,etc. Approx 72-75 CC open chambers. Great heads as far as I can tell. Since I had a set of 670s I used them instead. Still have the 061s in storage. I think they are often confused with the '67 143 heads, which were used on the same cars and MAY have been small valve heads.
And Ive mentioned this before, I wouldnt modify a set of 670s if I didnt absolutely have to. They're a one-year only head with the 400 big valve size and later valve angle and closed chambers. As more people cut them to open chamber, an unmolested set will get very rare.
chip
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I could explain all this to the girl at the parts store, but she'd probably call the asylum.
White '67 LeMans 407/TH350/Ford 3.89... RIP
Red '67 LeMans. 407/TH400/Ford 3.25
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