Mack Bulldog Magazine Cover

[farmer52]

Does anyone know this location? Additional info on the "Mack's 1973 Hit Parade"?

[vision386]

Ken,i don't remember what the official building designation number was,but that is the backside of where the new customer center/museum is now....................Mark

[Superdog]

That was the lineup of demonstrator tractors introducing the new ENDT676 Maxidyne "300 series" ready for delivery to the dealers.

[mackey58]

Sweet pic ! Ahh the old days

[Offset-U-bet!]

Thats a sexy pic! My wife thinks Im wierd! LOL

[rsb502]

There is absolutely no way you would ever in a million years convince any truck maker to spend that much money to build promo trucks that may not sell now a days they would laugh you out of the office.

[Offset-U-bet!]

There is absolutely no way you would ever in a million years convince any truck maker to spend that much money to build promo trucks that may not sell now a days they would laugh you out of the office.

Nice thought! Ain't it sad though? I believe all the truck companies in the 60' 70's and 80's did things to the highest level of class to promote thier trucks! Good time good times!

[57 bcr]

I've got that issue and I believe it was the old Dallas Factory Branch in the cover picture,Ken.

[farmer52]

I've got that issue and I believe it was the old Dallas Factory Branch in the cover picture,Ken.

Not that I question Mark (Vision386) but it did not look like the old Engineering Center. Unless they did some MAJOR reconstruction.

Does anyone know if the Branch building is still standing? I like to see these old structures still in existance.

[Maddog13407]

hmmmm heres a better question. I wonder if any of those nice gold 300 trucks are still alive.

[vision386]

I've got that issue and I believe it was the old Dallas Factory Branch in the cover picture,Ken.

That's highly possible Al,some reason I seemed to remember that being Allentown?.............................Mark

[vision386]

Not that I question Mark (Vision386) but it did not look like the old Engineering Center. Unless they did some MAJOR reconstruction.

Does anyone know if the Branch building is still standing? I like to see these old structures still in existance.

Its sure possible Ken,i could swear I remember seeing that picture when I was younger,and thought it was Allentown?...................................Mark

[countryboy5487]

Im with ya maddog i wonder if any of the golden puppys are still around?

[Green Dash]

I'm literally speechless. There is so much more to that picture than trucks and a building. It's why we're here on BMT.

Now I'm getting verklempt.

[b61mack]

I've got that issue and I believe it was the old Dallas Factory Branch in the cover picture,Ken.

You are right Al, I have the same issue. inside the front cover it says Dallas, Texas.

[Superdog]

hmmmm heres a better question. I wonder if any of those nice gold 300 trucks are still alive.

More on this story at 11.

[kscarbel]

Every Mack distributor received one "R" and one "F" cool power 300 tractor with the limited edition gold paint scheme imagined by Mack President Zenon C.R. Hansen.

Note the white-painted roofs to reduce interior cab temperature during warm weather.

[Maddog13407]

so would that be a real 300+ Mike or a 285?? cause I thought the 300+ was a Thermodyne?

[Superdog]

283 hp.,the 300+ was a Thermodyne,cameout in '75,315 hp.,designed for use with a 10 speed. The majority of the 300+'s sold around hear came with the RT1110 direct trans.,3:65 Mack rears and 20" rubber.

[j hancock]

The plot thickens...

[kscarbel]

so would that be a real 300+ Mike or a 285?? cause I thought the 300+ was a Thermodyne?

A 285(hp) "300", ENDT-676, is a Maxidyne prior to CMCAC (Chassis Mounted Charge-Air Cooling)

A true 300hp Maxidyne, EM6-300®, was the result of the addition of CMCAC in the early eighties.

The 315hp "300-PLUS" (1950rpm E6-315 and 1800rpm E6-315R), sold prior to CMCAC, was a modified high-torque-rise engine for multi-speed transmissions. It didn't fall under the Maxidyne or Thermodyne branding. But given the "300-PLUS" first carried the model number ETAZ-673A (a "Thermodyne" like number) before being renamed E6-315, I can understand the confusion.

The E6-250 (pre-CMCAC) and later E6-260 (with CMCAC) were marketed as Thermodynes.

[countryboy5487]

Hmmm ok so the side mount inter cooler with the tip turbine is the CMCAC?

[57 bcr]

Hmmm ok so the side mount inter cooler with the tip turbine is the CMCAC?

No sir.The Chassis Mounted Charge Air Cooling is a cooler mounted in front of the radiator to do the same job that the tip turbine set up did,with less moving parts and no COOL sound (RATS!!!).Tip-turbine 300's & 300+'s,had to be some of the best sounding engines out there.(Next to the V-8's,of course)

[Green Dash]

Any production numbers on these promotional units? I've seen 1 F model and maybe 3-4 R models. There was an O/O on Long Island that had an R-600 leased to Island Transportation pulling a fuel tanker. The first R model I saw was pulling for Quinn Truck Lines (not the northeast freight hauler) out of Ontario, Canada and I am almost certain it was an R-700.

[Maddog13407]

yea the RL600S we bought from the junkyard had a 300+ and R1110 tranny in it. some hacked off the rears and put a pete single axle in it made It a dumptruck. we got there just in time cause it is a rebuilt pedigreed engine and was on its way to china. got it for a grand, engine and tranny and made new mounts to put in in my 66 R model. gonna add the hood scoop someday as soon as I figure out how to mount the tubin under the hood to the old style radiator. for now it has the ugly newer style air cleaner with dual inlets. that's as far as we got as id like a set of air ride tandem rears for it with 22'' spokes. think id get away with 4.17's on 22'' spokes with the direct 10 speed Mike or think I should look for a faster set of rears?