Quote:
Originally Posted by 77 TRASHCAN
7J2, is that a 72 2 Bbl 455 head?
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The 7L4 is the 455 2-barrel head.
The 7J2 is the 400 2-barrel head.
Both have pressed-in rocker studs, expensive to ‘make right’. Also missing the end bolt holes for headers or exhaust manifolds, yuk.
It’s getting harder every year to justify putting money into rebuilding iron heads. Definitely choose the ones with the best features, screw-in rocker studs being the first consideration for street performance or just simply reliability.
The only press-in stud castings worth working on are the early high-compression GTO 389 (716, 77 and 093) and big Pontiac 421 heads, most of which are the same as the GTO heads. Because they look right and belong on a period correct engine they’re worth putting some coin into.
In my opinion putting money into essentially worthless castings like the 7J2 would be a mistake, unless you live outside the continental USA and had nothing else available to work with.