i found out the Ford 302 windsr weigh 210kg
Rover 3.5 weigh 144kg and P76 4.4 weigh bout the same
My 2.0 TR7 engine weighs 132kg!V8s from tr8 not much more!
Porsche 4.7 SOHC V8 574 260kg! Thats from the 968 I think!
VW flat 4 weighs just 91kg!
Cadillac V16 weighs 591kg!!
Chev big block 311kg
Chrysler Hemi 338kg
Look here :
http://www.chra.org.au/tips/engine_weights.htm
The Boss 260 is meant to be heavy? anyone know? and what about a ford 6? old 4.1 fords were about 190 to 195 kg i think?