There were no 333882 heads factory made with 2.02x1.60 valves. They were made in two versions. 1.72 intake and 1.94 intake both had 1.50 exhaust valves. These were never used as high performance heads as the intake ports are compromised by the valve cover bolt boss.

Ported, or intake port matched, they will flow well. They are considered the best of the "worst" factory heads. They are known for cracking in the center two exhaust seats. The factory seat hardening process was not yet perfected and led to most of the cracking problems.