1942-1946 1 1/2 ton exhaust question

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Mar 31, 2026 | 07:22 PM

dhenning

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2nd Gear

Joined: Oct 2025

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1942-1946 1 1/2 ton exhaust question

Wish I owned one, but......
Working on a scale model of the 46 1 1/2 ton fuel truck that my late father drove as a teenager in the hills of north central Arkansas. Looking for information on the original exhaust system for these trucks.

What was the pipe diameter of the collectors that ran from the exhaust manifold down to the crossover pipe?
Was the cross over pipe the same diameter or larger?
What was the diameter of the exhaust pipe from the muffler back to the tailpipe?
Best guess on the diameter and length of the stock muffler?

Thanks in advance for any assistance. This forum has provided a lot of info and inspiration for my project.
Dave Henning
Redfield, AR

Mar 31, 2026 | 07:37 PM

bmoran4

Parts Nerd Extraordinaire

Joined: Sep 2010

Posts: 4,368

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From: Western NY

I would suggest getting a copy of the "Green Bible" as it has this diagram followed by pages and pages of tables with all the measurements:

You can get reprints, digital copies, or an original print starting at $10 or so: https://www.google.com/search?q=ford+green+bible

It could also help in other areas of your modeling, not just the exhaust.

Last edited by bmoran4; Mar 31, 2026 at 07:48 PM.