Another 76 Brazilian Hardtop

Some more.

Do those numbers stamped "inside" the heads mean anything to you?
I really don't know if our heads are a "exact" copy of any north american heads...would imagine yes, but no idea witch ones.
All I know is my heads are from 1971 and 1972, very close to the begining of brazilian production, AND these are suposed to be copies from 1969 engines...and as far as I know, we didn't have ANY chances on heads from 1969 till 1981.

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I got the "How To Hot Rod Small Block Mopars" book a few weeks ago.
Probably going with something around Summit K-6901 cam, holley 4777 carb, sealed power .040 pistons (our stock CR is araound 7,5:1, so something close to 9:1 is quite a bit of improvement), short headers, and 1.88" and 1.60" valves (our stock ones were 1.75" and 1.5").
Would love to get my heads done, but not many people doing it down here...and those who do it, well, it ain't "cheap" (US$ 1.000,00 or close).