duke and muncie 423
duke and isuzu 436
duke and auto 456
2.8 and getrag 496
2.8 and auto 513
4.9caddy and getrag 530
4.9caddy and 4t60 559
buick3800super and getrag 582
sbc and getrag 717
sbc and auto 733
notice there is a difference of 310 lbs between the lightest combo and the heaviest but only 17 lbs between the heaviest factory combo and the 4.9caddy with the getrag.
weights taken from:
http://www.fortunecity.com/silverstone/impala/403/weights.htm
longjonsilver
------------------
Im the original owner of a white 84 2M4 purchased Dec 10, 1983. "It is better to remain quiet and have people think you are a fool, than to speak and remove all doubt" - Abe Lincoln