seyser

Thank you. It has 5.73 rears. Im Not totally sure what top speed would be.

1964 B613, 673 turbo, Quadruplex, power steering. The truck runs, shifts and stops as it should. The rear suspension has been professionally rebuilt with all new rubber components. (I have receipts) This truck was delivered new without front brakes as is with all road tractors of the day. A few years back brakes were installed on the front axle with newly lined brake shoes, freshly turned drums, new chambers, air lines and QR valve. The engine is original and starts and runs excellent with minimal if any leaks. The truck has power steering that works fine but does have a slight leak. The cab is in fair shape for its age but there is some rust through on the bottom rear panel,driver floor, as well as a few other small areas. Overall a decent cab. The fenders are surprisingly solid throughout but again could use some small rust areas repaired. The frame is solid and straight although there is a one inch crack on the top of the rail behind the cab. It has been there for many years and has a support bolted over it per the Mack manual. All of the lights, wipers, gauges and heater work properly. The truck is still using the series parallel switch that works great and it also has the original generator that charges fine.The steer tires are good 22.5s and the drives are old 10.00x20s that are worn and need to be replaced. The truck currently have a flatbed on it as seen in the pics. This truck has some of the more desirable components such as the factory turbocharged engine, factory/dealer added power steering, matching 55 gal aluminum fuel tanks, quadbox, etc. This would be an excellent truck to restore or simply enjoy as is. $4,250 Located in MN.

Looks like fun. Thanks for posting.

I was looking at a 1985 DM dump truck the other day and it had a 237 in it. I figured everything in the mid 80’s would be a 300 or 350. Got me wondering when did Mack quit using the 237?

Mine have the X pressed on the ends as you can see in this pic.

Keep up the great work!

I am going to have to disagree with you on that. I am positive these are original box covers. I was also at a local junk yard the other day that had 2early 70s R models that had the exact same covers although they were rusted.

It appears that all the new units are of a slightly different style. Here is a pic of mine, these is an original from a 79 model year truck. Anyone have one like this with the three protruding dimples on the sides?

Great movie!!!

Looking for an original battery box cover for my 79 R model.

I ordered one and should have it by end of week. I’m glad they’re still available. I’m pretty particular with things and matching gauges is a must. My truck was missing the plastic filler cover over the extra gauge hole so i figured instead of finding one of those I’d put a boost gauge in. Who doesn’t like more gauges anyways right !?

I think I found a gauge. The gal at the local Mack dealer searched all R model gauge part numbers which began with 7MT and came up with 7MT232 for a 0-50psi manifold pressure gauge. I’m guessing this will be the correct one. I was able to locate a picture of what I think it looks like. I plan to get one on order, dealer quoted $118.

Thanks for all the comments. I’m excited to have it. Work has been super busy so I haven’t done anything except take it up and down the road a few times. The old cool power sure has a nice whistle to it. All fluids look great but I will probably change everything to start fresh and go from there. Jeremy

Thought I’d share a couple pics of my R model that was delivered this weekend. I purchased the truck from the wife of the original owner who passed away last year. He had ordered it new in 1979 and was the only one to drive it. The truck has 118k miles and was used to pull a lowboy. It’s completly original except the blue paint which was done at the Mack dealer when truck was new.

Thanks for the reply. I have been trying to find one for sale, heck been trying to find a pic of what one even looks like.

Anyone?

Great to hear. Mice suck but better then needing a new engine.

Anyone have any pics of one? Also are they still available through Mack?

Was there ever a factory boost gauge offered for the R models that matched the other gauges? Jeremy

Has the rare oem canopy and light kit. Beautiful machine indeed.

I always think patina wins over a perfect shiny paint job. I’d leave as is.

Welcome to the forum. Some nice looking hardware you’ve got there!

I’m looking to possibly purchase a truck to use on the farm hauling grain. What are your thoughts on a R model with a 168” wheelbase? We mostly haul short distances. I know it won’t ride the best but I’m young and can handle that. How common were short wheelbase trucks? I see some pics of them from time to time, was a short wheelbase mostly used for lowboy trucks or what was the major benefit of being short? Jeremy