Yoos Brothers Construction

Lookin Good!

I would say that was custom made.

Same here.

Mack made a lot of E6 4 valve engines. They are quite common.

There isn't many left and some that are left people don't usually want to sell them because of that. You may have to wait a while to find one.

ranchhopper, Just in case you didn't know the Superliner mount looks the same as the RS mount but they are not the same. Both the My RS795LST and my RWL721LST have the same style of mount you are looking for but the Superliner one is taller than the RS. They also made 2 different syles of the Superliner 1 mounts. The newer ones where 3 piece rather than one.

You can still get that pump new Rob. I believe I got mine through Pai for my RS795. As stated above you will need the adapter plate though. Josh

overland, I see you have a 1978 Superliner. Is that what the 866 is in If so could you post some under the hood pictures of it? There weren't a whole lot of them made with the 865 866 v8s and being I'm V8 guy I'd like to see it if at all possible. Thanks, Josh

Here one of the 1993 Mack RW713 Superliner that My Dad Brother and I have been working on restoring for about 4 years now for a friend. It's really close to being done. This is the next to the last Superliner ever built.

Here's some more of my 1985 Mack RW613 Superliner Magnum and one of my Dad's 1989 Mack RW713 Superliner.

Nobody has posted here in a while so here's some of my 1980 RWL721LST Superliner tri axle dump.

Glad you got it going again. That's why we do all our own engine and tranny work. Nobody want to touch 12 spds. Iv'e helped my Dad redo lots of them. I really don't see what the big deal is. I'd rather do a Mack tranny any day over a Fuller.

The low hole is completely seperate as stated above with its own inversion valve. There is exhaust, supply, and 1-4 on the knob. Low is on a seperate switch. I'll get my diagram tomorrow that has extended range on it. I made my own diagram as MAck never showed it with the low hole. It almost sounds to me like some body missed the fork when they put the air shifter cover back on. It can be a pain in the ass to get it there right sometimes.

Not to sound stupid but you did put the gear shift in one of the 1-5 gear holes with it in reverse right? I have an air line diagram for a 1070B I could scan.

Rob, To me that's what a truck paint job should look like. They looked like that new. As for the RL signs I thought it would look cool. Lol; RL, RWL; Its close enough!