I was putting together a few heads today and decided to weigh the pieces I had out. Here are the numbers for the people who are weight conscious.
(All units are in grams)
VALVES:
S.I. "big valves" (44mm,36.8mm)
Intake - 100, Exhaust - 79
S.I. +1mm (41mm, 36mm)
Intake - 91 Exhaust - 80
factory chrysler
Intake - 80, Exhaust - 84
RETAINERS:
factory chrysler - 26
chrome moly - 26
Titanium (from "8valves") - 16
SPRINGS
factory chrysler - 78
Mopar Performance 061 - 84
LOCKS
factory chrysler
Intake set - 3
Exhaust set - 4
MP hardened intake set - 3
ROCKERS
style 1 (left side in pic) - 76
style 2 (right side in pic) - 77
If anyone else has any data to add to this, that would be nice.