The initial production of the Rochester quadrajet was for the 1965 Chevrolet 396 engines.
These units had LOTS of issues, and richly deserved the "quadrajunk" moniker assigned to them.
The 1966 versions were better.
The 1967 versions were much better, and pretty good carbs.
The 1968 versions continued to improve.
When Rochester changed the float pin placement over the 1969~1971 model years (not all models changed), the carb became (opinion) excellent. For a street carb, (again opinion) second ONLY to the Carter thermoquad.
The 215 did, in fact, use Rochester 4-Jet carbs.
CAUTION MUST BE USED IN THE SEMANTICS OF THE ROCHESTER 4-BARRELS!!!!!
Early Rochester literature referred to the 4-G series (square-bore) as a quadrajet.
Later Rochester literature referred to these as a 4-Jet.
The model most associate with the term quadrajet are the later 4-M (spreadbore) series.
All (opinion) are GOOD carburetors. (Note there is NO Rochester 4-B series ; )
Jon
