How much does a Slant 6 engine weigh?

These numbers are using a medical scale for most measurements. I used a postage scale for things under 10 lbs. All numbers are pounds. (sorry, spreadsheet didn't paste well)
Item 79 65
crank 63.2 75.2
block 147 147.8
piston 15.6 18
head 79.8 72.4
oil pan 8.4 8.8
oil pump 6.8 6.8
water pump 3.4 3.7
intake 18.5 18.4
exhaust 19.8 19.8
alternator 13 13
alt mount 2.4 2.8
balancer 5.4 5.2
starter 14.8 20
engine mounts 10 6
coil 1.5 1.5
distributor 2.4 2.4
Coolant fan 6.4 4.2
Carb 4.2 2.6
water outlet 0.2 1
pullies 3 1.2
timing cover 2.2 2
Valve cover 4.4 4
timing chain set 4.2 4.2
lifters (set) 2.6 2.6
rocker arm assy 7 7
pushrods(set) 1.4 1.4
camshaft 11.2 11.2
Fuel pump 1.2 1.2
Total 460 464.4