390 & 429 Engine and Engine Weight Specs
These are approximations.
core block - 170lb
crank 65 lb
connecting rods and pistons 28 lb
camshaft 9 lb
timing gear and chain 4 lb
oil pan (some don't consider this or the valley pan cover as part of the short block...but will add it here)
SHORT BLOCK TOTAL --> 285 lb
cylinder heads 52 lb each or
104 lb for the pair
rocker arm asseblies 5 lb each or 10 lb for pair
16 lifters and push rods 4 lb
LONG BLOCK TOTAL - 403b or roughly 410 lb if you add the balancer
Note: these are weights for the short block and long block components only and do not include the external items such as manifolds, pumps, pulley, carb, front cover, etc you will find on a complete engine.
Note: I've tended to round up to the nearest lb to compensate for dirt and grime. I need to get a scale to hook on my cherry picker so I can weigh directly!