Bare 6.1 block on my scales is 190-195 lb.

So maybe 30 lb heavier than a 340 block and 30 lb lighter than a 440 block


I don't think you'll see much weight difference between the three when set up similarly.



The aluminum block is 75-100 lb less than the iron block. $4300. More bore available.


-'02 Dodge Viper Ex-World Challenge racecar
-'73 Duster, 6.1 based 392 hilborn hemi, tko600, full floater rear 9", Hellwig custom bars, viper brakes, built for road course