Found it!

http://www.stovebolt.com/ubbthreads/ubbthreads.php?ubb=showflat&Number=989075#Post989075

I wouldnt have believed the GMC is heavier than the Rat but thats how it looks. About 700lb the way I count em.
All-iron Rat is about 660lb, a 292i6 is about 460lb.

Edit-
Well on rethinking it just now at 5am and looking at Tony's "Lightweight" GMC on the pallet I built an excel sheet to try to make things match.
So I get

790lb, total on their factory "group 1" sheet 270cid
Minus 60 bellhousing, 60 flywheel, 50 clutch etc, 20 generator
(my guesses, I aimed heavy for heavy truck parts, the transmission is 200-300lbs alone!)
600lb dry
620lb wet with oil&water approx
So the 600lb dry would compare to the weight I got for the 194 Nova 6 of about 410lb.

Things jive pretty well now, thats just a little heavier than the stovebolt 235-261. Still though, Tony got a real lightweight, must have been a special all-aluminum "ZL-1" version?

Last edited by DeuceCoupe; 11/27/13 10:38 AM.