i found this on
http://www.team.net/sol/tech/engine.htmlit lists most engine weights
Mopar Slant Six 475
Mopar 273-340 "A" V8 525
Mopar 360 "A" 550
Mopar 361-383-400 V8 620
Mopar 413-426W-440 V8 670
Mopar Street Hemi 765
(690 bare)
Chrysler 2.2 L4 216 (bare motor)
Chrysler 413 wedge 640 ('59 300-E)
Chrysler 331 Hemi 745 1955
DeSoto 383 630 ('59)
DeSoto V8 675 (276-341 CID, '50s)
Dodge V8 645 (241-325 CID, '50s)
Dodge 361 625 ('59)
Plymouth 361 640 ('59)