Estimates for the 5VZ-FE weight have been all over the map (on various Tacoma-related forums). The most precise weight figure I've seen is from this CT thread:
http://www.customtacos.com/forum/showthread.php?t=91182
... in which a 5VZ-FE (full assembly, including TRD supercharger, clutch assembly, and starter) was weighed at 505 lbs. This would be more or less in line with other reported estimates ranging from circa 430 lbs. up into the upper 400's (not counting the 'extras' included in the 505 lb. weigh-in) ...
http://www.customtacos.com/forum/showthread.php?t=91182
... in which a 5VZ-FE (full assembly, including TRD supercharger, clutch assembly, and starter) was weighed at 505 lbs. This would be more or less in line with other reported estimates ranging from circa 430 lbs. up into the upper 400's (not counting the 'extras' included in the 505 lb. weigh-in) ...