70 amx 360 carb

[DeuceCoupe]

Originally Posted by pfordamx

can anyone clarify what the blue print sheet is saying under carb for 1970 290hp 360 amc combo becuase i think it should be a autolite 4300 4bl but all the blue print sheet says is (owa-4/auto) i'm pretty positive the /auto is specifying a automatic trans and i've looked through the accepted parts list and didn't see a reference to this. any help would be appreciated

(290 360 10.0 1-4 Ford 0WM-4/SM 0WA-4/AUTO)

I have run a lot of Ford 4300's so now & then I obtain an AMC 4300.
AFAIK, AMC used the Carter AFB thru 1969, then went to the Autolite 4300.
Ford made 2 sizes for the 4300:
1.00" venturi, about 440cfm
IIRC this was only used from 1967-69.
1.25" venturi, about 600cfm
This was used from 1968-1974.


In the AMC numbering, 1st digit is the year, 3rd digit is a=auto or m=manual, and I think last digit means 4bbl.
I've had:
3tm4
3ta4
4ta4


I don't know what the 2nd digit "T" vs your "W" means.
All the 1.25" venturi Autolite 4300's are the same CFM so I bet any of them would be legal, the only diff is jets & air bleeds etc.