Thanks for staying cool, Jerry.
Was that larger/longer road draft tube used in all years (1948-1955st, and through the end of 235/261 years)?
[I looked it up - see info below]
47-53 trucks (standard cab, downdraft tube) were the same as the part/box shown by Brad - part# 3693661
1948 was different (first year for PVC, I think - might have been for updraft engines only on 1948)?
1954 and later were different - does anyone know why/how?
(Note: the engine changed to high pressure oil system in 1954).
However, looking through Brad's photos - a similar height/style tube is shown on later engines.
Thank you, again, Jerry
Last edited by tclederman; 10/26/2019 8:22 PM. Reason: [added comments]
