Linkages

[lee]

Could someone please tell the difference between a 383 4bl linkage and a 440 4bl linkage i think this is why my kickage does not work since i switched from a 383 to a 440 thanks Lee

[lee]

i did this in a 68 dodge charger i took out the 383 and put in a 74 440 and left the orignal tranny

[GreenMachine]

I don't think there is a difference. I've heard people say there is but nobody has said what exactly the difference is. The only logical thing it would be is the vertical rod (on the 3 piece style linkage). But there is over an inch of adjustment on that rod and the height difference of the 2 engines are about 3/4".

As far as your issue, the '68 and the '74 engine use a different type of linkage. The '74 should have a long multi-angle rod going from the intake to the trans lever. The '68 should have a 3 piece set-up with 2 bellcranks. If you didn't swap everything over that could be your problem.

[John_Kunkel]

In the same year, the difference in the 3-piece linkage is  the vertical rod that goes between the two bellcranks...the taller RB block requires a longer rod.

[oldkimmer]

...........Also the bracket for the 440 is bent over towards the carb some to line up better with the carb, cause the 440 is wider........kim.......