There seems to be a lot of interest in engine weights recently, with at least threads on 250, GMC 302, and 216s.
Comparing weights of different engines can be frustrating as the the various sources seldom indicate just what all components and accessories are included in the weights quoted in the lists. I have not worked on many of the late model Chevy sixes (194, 230, 250, 292), but I am currently building up a 261 (bored to 278) and have been weighing all of the components as I have been assembling it. The list is in this link:
261 Engine Weight Summary To summarize, the fully-assembled long-block components, including water pump, alternator, radiator hoses, etc. weigh 508 pounds; with the bellhousing, starter, flywheel, and clutch the weight is 599 pounds; If we add in the weight of six quarts of oil and 16 quarts of coolant the weight would be about 643 pounds. If someone sees that I have missed some parts let me know.
Does someone have similar numbers for the 250 six? Is the extra 190 pounds for the 216-261, relative to the 250, all in the block, crank, rods, and head? It doesn't seem that there should be a big difference in the external parts.
Hoyt, II #922
