Can anybody confirm for certain, or have a picture of the roof of this unit, does it have the number on the cab roof, like the GP40-2's? The pics I have seen and the slides I have, I can't be certain. A fellow modeler asked me, and I am ready to decal this unit myself. After all, I only painted it about six years ago.....

Roof numbers were applied to 3640.If you go to railfan.net rdg forum there is a thread concerning the restoration of 3640.On page 22 of the topic there are pictures of the roof where you can see the outline of the numbers through the Conrail blue paint.The bottom of the numbers point to the short hood front.

I thought so, but I couldn't be certain these old eyes weren't fooling me. My other modeling friend also picked out a picture in one of the many Reading books I have, the unit is also the second unit in the consist, it appears to have the numbers, but the distance, it's hard to confirm. Don't ask me what book, my friend Chris knows my library better than I do, I have to use him as an index reference. I thank you for the reply.

I can confirm this as I visually inspected 3640 upon its arrival in Leesport. I have photos "somewhere"
Rob

What other Reading repaints might have the rooftop numbers? In all my various pictures, there's not a lot of "down on" shots. I have heard that 614 and 449 and several switcher repaints also had the numbers added. I have a half dozen shots of 614 in fresh paint, but can't see the roof on any of them. There was a Bee Liner issue that had this info, but I don't think it had photos to prove it. I'll be checking the archives for that one...

NTJ...according to publications by the RCT&HS all the RDG repaints received roof numbers.The only green units without were the MP15's&39-2's.
Now,the trick is to find out how they were applied...width wise or length wise.
Example;
When I first modeled 614 I applied the nos. width wise on the roof.

This turned out to be incorrect.On the RCT&HS forum I was sent a picture of 614 which clearly showed the correct application.I made the correct change to my model as illustrated in the following picture.


Unit number 1519 was the first RDG repaint.If you have access to Mr. Gottschall's book(The RDGRR Green Machines)on page 3 you can make out the length wise application on the roof of 1519.Another photo of this application can be found on page348 of Mr.Holton's book(The RDG RR Vol.II).On this page there is a picture of 2711 at Rupert with the nos. applied length wise.The bottom of the numbers face to the engineer's side of the cab.
My conclusions on the repaint application of roof numbers for modeling purposes is this;
The first unit 1519 was released 09/06/72,2714 release was 12/31/73 this makes me believe that all the units done between these dates had their roof numbers applied length wise.Units 3640 and 2763 were done in Aug.74 and since the SW1001's&40-2's were delivered in Nov. and Dec. of 73 with the width wise application these two units would have it applied the same.Yes,the evidence is clear on 3640,but some are not too sure on the 2763.
I chose to model the roof numbers.