What we found is 685 pounds - this is the weight of the factory production engine with cast iron heads and manifolds. Sources say that it will be about 100 pounds lighter if you use an aftermarket engine with aluminum heads and intake manifold.
With no, accessories attached, 454 with iron heads weighs 590 lbs, according to Chevy Performance Catalog.
See other useful dimensions for Chevy engines here.
For engine weights of various vehicles, check them out here.
Visit www.chevrolet.com for details and pictures of models, dealer locator, events, news, and more.
For updates follow Chevrolet on Facebook and on Twitter.
Planning on doing an engine swap? If so then check out Super Street Magazine's Engine Swap Checklist to make sure you get everything right.