stock cj5 distributor

i posted a thread in the flatty section, but i figure this section would know for sure...
the distributor in my l134 looks identical to the distributor that i pulled out of my 63cj5 f head....
here it is on the left

here are the guts of that dizzy

and the guts of the one in my l134...

the points plate in the fhead one is blank..the other says autolite on the points plate where the red line is...neither have tags on them....

so..what model is it?

 

my best guess:
IAY-4401 series, ie, 4401, 4401A, 4401B
external oiler port/cap in dist housing

 

thats what i was leaning towards.....thanks for the reply

 

Can sometimes find the # cast into the base of the body, underneath the grime.

 

sid..i could kiss you...iat-1001////now what is it out of in regards to parts/pertronix?

 

These distributors are not the same.
So almost no parts will interchange.
The earlier one is an IAD 4008 the later is an IAY 4401.

 

old time..its 3 distributors in all the pics total...the 4008 and the other 2 both say iat-1001 on the underside

 

Regardless of casting number the components generally are not interchangable.
The unit as a whole can be interchanged.
Willys use 4 basic designs. IGW IAD IAT and IAY types.

IGW the earliest has a very small distribitor cap. (circa 1941 to 1945)
IAD is the dustproof design having the largest cap (circa 1945 to 1954)
IAY is the last design with slightly smaller cap than IAD (circa 1954 to 1972)(became Prestolite in the early 1960's)
IAT can be similar to either IAD or IAY but always with vaccum advance (circa 1947 to 1964)
There are several different versions of the IAT's and the IAY's
CJ's never used the IAT's (vacuum advance)

F-134 CJ5/6 only used the IAY types IAY 4041 or IAY 4401