1. Where is vin number on the radiator support
As Jim mantioned it is not the vin but the seq number and the year and plant.
It should be under the yellow radiator fluid sticker.
Barely visible but that's the underside of the core support with the underside of the stampings
There is another under the rear driver's side trunk seal.
BTW the seq number stamped on the body is a bit odd
In my case it starts
72 mdd #####
It translates to
7 = model year or body style???? In my case both numbers are 7 (7 for 67 or 7 from 27 which is convertible)
2 = Hamtramic, MI assy plant
M DD is month day day example is 208 which would be Feb 8
Seq # is 12345 the seq it should have gone through the assy line ( or something like that)
My intake casting number is 3X19. What is the X?
I'm not seeing anything like that.
Maybe it's the casting date?
. I have no part number on my radiator but it looks original. Just 38086?
38086 is the manufacturers number.
There would have been a soldered on tag in the recess just above the 38086 that the tag would have been in the radiator core number.
Of the 3 rads below
The one not in the car is an origional top, bottom, side rails but newer 3 row core
The one in the car looks to have the factory core per a rad shop who disassembled it and rodded it out.
The one without the part number tag is the origional rad from the car and has the origional top, bottom, side rails but newer (1970 to 80s) core. It should have been a 2785 970 due to the car having CAP
Just because the top tank is origional does not mean the core is.