Find Us!

Trucks on Display


Below is a sampling of the many trucks on display in our Trucking Hall of Fame® Exhibit Hall. Check out our app for more information, photos, and an audio recording for each truck.  Click here to download.

1942 Mack FJ

Engine Type:
Mack Model EO, 6-Cylinder

Transmission Type:
Mack TR-15 with TRA-12 Auxiliary

Truck Information:
This 1942 Mack FJ was 1 of 322 originally manufactured; in 1942, Mack made 98 of them. The F-series is a heavy-duty truck; they are very desirable among truck collectors. It has air brakes but is still using chain drive. Its C-cab design goes all the way back to the AC model starting in 1916. The bare chassis on this truck weighs 15,360 pounds. The whole assembly empty weighs in at 24,680 pounds but is capable of a maximum loaded weight of 50,000 pounds. This model has 136 HP at 2100 rpm and 368 foot-pounds of torque at 900 to 1300 rpm. It also has giant 1200-24 tires. According to the original registry provided by the Mack Trucks Historical Museum, it was sold in a group to the War Department North Atlantic Division. The truck was delivered to New York City on July 16, 1942. From there, it was assigned to a contractor for the Army Corps of Engineers. In its initial configuration, it was a dump truck and used as such until the end of World War II. When the war ended, it was sold to Geo. Negri Ready Mixed Concrete and converted into a cement mixer. The 6.5-yard Jaeger concrete mixer is still on the back today. Six and a half yards of concrete weighs over 26,000 pounds. On today's mixers the bowl is tilted upward; on here it is horizontal. You didn't fill it through the unload hatch. There is a side hatch that would have rolled around to the top to fill the concrete mix. It has a separate engine to run the cement mixer and there is a transmission for the mixer. You mix the cement by turning the barrel one way, and you get it out of there by turning it the other way. There are veins on the inside of the barrel. When you are mixing, it is pulling everything toward the front, and when you are dumping, it is pushing it all out the back. The Iowa 80 Trucking Museum purchased this truck from Carl and Grace Mazzuchelli in January 2010. Top Speed: 27 MPH

< Return To Truck List
Go Top