My Dad had a ‘72 R686 with a 237 and a Maxitorque T2050 five speed with Mack 38k rears and a Camelback suspension, plus a ‘58 B61 with 180hp 673 and a Quadraplex with a fixed tag axle, both without power steering. He always praised the Mack powertrain and called other trucks component trucks. Although he had high praise for the Detroit Series 60. You just couldn’t kill those old Mack’s!
Absolutely the Maxi-Torque 5 speed and the 237-250-300’s were bulletproof, I’d love to find one to drag low boys with. An older DM800 with a 300 plus and #55k bogies with a #25k front axle, what a monster.
Best and TOUGHEST transmission Mack ever made... That triple countershaft setup can't be beat behind them old Maxidynes.... I still have a '69 R-686 Twin Screw Tractor on the road.... Hell of a truck!... If ya can put the power to the ground, and keep traction, they'll pull the world along with ya wherever ya want to go...
you bet yeah!!!! drove a 69 and 71 for RI BUSSE out of chicago, passed up petes and k whops with their hoods open all the time....the only thing that suck was getting DOTed...
Never cared for the maxidyne setup, best Mack I ever drive was an E6 360 with a Mack 10 speed behind it, kind of the opposite of a 237 and a 5 speed it was more like driving a normal Cummins except it lugged died a little better.
The exact truck that I learned on & drove for 3 years straight , from 16-19.....was a 1975 R600 dump with a 15 cubic yard body & a 5 speed transmission.....What a truck.... Never touched that clutch except for 1st & reverse..
Macks always punched above their weight. That 12 liter would pull as hard if not harder than the 14 L Cummins and 15 L Cats. And they sound sooooo good.
@NPC-mt1cz no misconception. You are correct about Mack rating their engines at the wheels versus flywheel, but their stock and trade was their fast torque rise. This truck is a prime example......5 speed transmission and the ability to run above 65k gross combined weight. The Big 3 weren't doing that on a regular basis.
Love these steel dash Bulldogs. 237 and 300+ Maxidyne matched with the 5 sp Maxitorqe transmission is a great setup. Sounds like 4 inch exhaust. Sounds so beautiful drove many a mile in these old dogs. Stay Safe out there, God Bless
@@Jeepdriver75 Ever 300+ I remember had 9 or 10 speed Roadranger transmissions. It had a narrower torque curve and needed a few more gears than the 5 speed.
Seriously- is there anything more dramatic than a M A C K attack? The Look the Sound The feel Guddam transcendental experience For Me- I Tell Ya ..I walk away feeling 😌
I had a neighbor friend when I was a teenager who had a 72 R-600 that had a 6 cylinder Mack with a 5 speed gearbox. The tractor was set up for running chemicals and it had a pump on it that we rebuilt several times. I remember that he would run around 20,000 miles a month and he would bring it home to do the maintenance that we could do on it. Give it a bath and then he would be out on the road. He would mange to be home for awhile most days and then weekends. I was broken hearted when the news came that the crankshaft broke somewhere in Connecticut and he sold it for parts. Then he bought a 82 Binder Conventional with a Cummins and a Roadranger. At that point I was 18 years old and he taught me how to drive it. I had my Articulated license until he got divorced and moved to Illinois and then the government started with CDL’s. I had been injured in a motorcycle accident and I was concerned that the state wouldn’t allow me to continue driving. But that old Mack was a great part of my teenage years. Watching this brings back memories.
When we were using 5 speed R models for pulling log trailers we often had to get a skidder or dozer to push them away from the loader because they couldn’t take off in the soft ground loaded. 6 speeds could. I do miss driving R models though, the sound and feel of the transmission is unlike any other truck!
Yeah we also have 2 tri-axle dumptrucks with the 6 and seven speed. Even the six speed's first gear is a little high for my liking if you get into soft ground. The seven speed however has a great low and reverse gear.
Back in the mid 70's my dad had a number of R600 with twin sticks. I believe the one stick was for the five gears in the maxitorque transmission and the other gave direct, low and reverse. Low was only used in first gear, so the effect was a six speed transmission. (I was pretty young back then so I may not be remembering this correctly). Anyway, our trucks often had to start out heavy loads (120,000lbs. or more on five axles) in the soft ground of our sand pits. With the truck in low range in first gear it would crawl away without having to touch the throttle. Back then my dad was able to order custom trucks from Mack and have them tailored to our needs. This made them a very effective truck and the R-600 ended up being the only truck my dad would buy until Mack stopped making them.
That must be a pre-1975 R600. My dad owned nothing but R600's (starting in 1975) but I've never seen that style dash before. Back then our trucks all had twin sticks and a very low gear for starting in the soft sand of our pit. At idle you could slide the stick into first with the clutch engaged and the transmission would give one click (no grinding) and then the truck would start to crawl ahead. A very low gear indeed. I miss the sounds in this video.
The metal dash is the older ones we have a R 600 with the gullwing hood and it has it I was told it was last made in 1967 the 5 speeds woud make a good city delivery truck no split takes a bit of getting use to the long rev change between gears easy to use done a lot of miles with it now just a retired farm truck still working just not on the long hauls got a v8 Ultraliner for that Its still a nice truck to drive not a bit rough to ride in very rough to ride in nothing has fallen off it alsmot identical to the day it arrived in 1983
Air starter I love. Mack is the only truck I've ever seen that keeps 100 lbs of air pressure over a 3 day weekend. Keep in mind the only thing airride on that truck was the airride seat. And the air tank was the big sidesaddle 50 gallon one.
@@deborahchesser7375 100%....LOVE the mack R model my absolute fave truck. Used to see a MINT triaxle R Model all the time when i was riding my bmx bike and the roads near my house were being repaved. It was Straight piped and sounded absolutely AMAZING. Could hear it from so far away. SEARCH loud Mack R model oil truck on TH-cam here and that is a slightly tamer sound but exactly the same 💪🏼💪🏼💪🏼
@@redline350zHR I think I’ve seen it 237 with a 10 spd sounds damn good if that’s the one. Check out DM886SX it’s green with a 300 plus Mack motor it’s a true bad ass Mack
The best straight piped engine sound. Mack trucks are undefeated on that part. Not Cummins nor CAT and neither Paccar or Navistar.They sound awful straight piped. This is the only truck that you can hear it from miles away and y'all say:that's a mack,a bulldog is coming.
Watchin' this and I'm missin' ridin' shotgun in bigrigs. This one has particular pzazz too thing's been running for what 20~30 years? damn! Slick drivin' to boot.
But I found that driving a Mack five speed vs a non turbo 6-71 or 8v71 Detroit is vastly different. The revs drop so quickly on those two cycle Detroits that you have to shift at lightning speed or blip the gas between double clutching. Meanwhile you have to wait for the revs to drop on a Mack five speed before shifting (read a short book! 😁) as I learned on an R model flatbed with a six speed T2060 with an Eaton tandem in 1991. Even driving a Series 60 is vastly different than the two cycle Detroits as the revs drop far more slowly. The revs didn’t drop quickly on the big Ford gas V8s like the 477 and 534.
Love that sound. Do you have any video's of this truck from a distance going through the gears? Or pulling a hill from a distance? Or even someone driving right next to you as you go through the gears?
What year is your truck I got a 1969 R model with the same dash in it and what motor is in yours I got the 237 Mack motor in my truck would like to see more videos of yours thanks
not sure what year the R model was introduced , around 66 I think , this one here is a 1966-72 R model , looks like it has some good gears in the diffs, my first job as a mechanic, my employer had 35 R models , they were rough and yes , shifting from 4-5 when accelerating, you hoped you were not climbing a hill .
My dad drove a Mack R model It was a 1968 to haul grain back in the 90s till the early 2000s. I remember the shifter bobbing furiously at certain RPM's that you would get up too at speeds on interstates such as I 70 and I 75. No point to my post just remembering the past.
Put a 6 speed in that thing and a Jake brake . Shift with the Jake brake engine RPMwill come down fast so engine will never lay on it's face. Keep engine in its torque band 16 to 18 and you will save fuel. I did
Yeah this truck is a 5spd, we have a triaxle dump with the 6spd T2060 (5 speed with low range in first/rev), and another with the T2070 7-speed (5 speed with low in 1st/2nd and rev). The 2070 is much nicer for any kind of off-road application.
If not an E6 237 it sounds like the ole 673 or 711 Thermodyne Mack that were in my families B models & very Early R models ( 66 & 67 Models) back in the day. Green dash tells me that's an Early R model up to an 72 or 73 model @ the latest. I miss that sound on a daily basis.
Wasn’t 73 the first year of the tan interiors? I drove a 67 R600 that was a 237 6 speed and it only had two parking valves that were between the seats on the back wall of the cab.
The hoods on the R600's are too short unfortunately. You might be able to with the R700's, however engine compartment width may still be an issue. The Superliner hoods were designed with the length and width to accommodate such a massive engine.
I know. I thought he was sitting on the floor to start with. Why sit tall and proud when you can peer over the wheel like a little old lady on her way to church?
My Dad had a ‘72 R686 with a 237 and a Maxitorque T2050 five speed with Mack 38k rears and a Camelback suspension, plus a ‘58 B61 with 180hp 673 and a Quadraplex with a fixed tag axle, both without power steering. He always praised the Mack powertrain and called other trucks component trucks. Although he had high praise for the Detroit Series 60. You just couldn’t kill those old Mack’s!
Agreed.....the 60 Series was also a game changer. It still was not as strong as the 285 though, pound for pound & inch for inch.
That combination of that Mack engine and transmission is unbeatable.
I think one of the best drive trains ever produced.
Absolutely the Maxi-Torque 5 speed and the 237-250-300’s were bulletproof, I’d love to find one to drag low boys with. An older DM800 with a 300 plus and #55k bogies with a #25k front axle, what a monster.
Best and TOUGHEST transmission Mack ever made... That triple countershaft setup can't be beat behind them old Maxidynes.... I still have a '69 R-686 Twin Screw Tractor on the road.... Hell of a truck!... If ya can put the power to the ground, and keep traction, they'll pull the world along with ya wherever ya want to go...
you bet yeah!!!! drove a 69 and 71 for RI BUSSE out of chicago, passed up petes and k whops with their hoods open all the time....the only thing that suck was getting DOTed...
Never cared for the maxidyne setup, best Mack I ever drive was an E6 360 with a Mack 10 speed behind it, kind of the opposite of a 237 and a 5 speed it was more like driving a normal Cummins except it lugged died a little better.
My favorite combination in a Mack to drive. So much torque . So easy to drive . 37 years .
Just don’t go over second gear in low lol. Best damn combo ever built
The exact truck that I learned on & drove for 3 years straight , from 16-19.....was a 1975 R600 dump with a 15 cubic yard body & a 5 speed transmission.....What a truck.... Never touched that clutch except for 1st & reverse..
This young man is an old school chauffeur. 👍
😊brings back good memories. Haven’t driven one of those in years
"One stack mack with a window in the back" I put around a quarter million miles on those old trucks back in the day.
Macks always punched above their weight. That 12 liter would pull as hard if not harder than the 14 L Cummins and 15 L Cats. And they sound sooooo good.
Not really... mack rated their engines at the drive wheels while cat and cummins at the flywheel is the reason for misconception
@NPC-mt1cz no misconception. You are correct about Mack rating their engines at the wheels versus flywheel, but their stock and trade was their fast torque rise. This truck is a prime example......5 speed transmission and the ability to run above 65k gross combined weight. The Big 3 weren't doing that on a regular basis.
Without a doubt my friend low end grunt is unbeatable my favorite Mack engines are the 237 285 300
Nothing like the deep throaty growl of a straight piped E6
Especially when they are lugging hard in 3rd or 4th.
You should show the outside of the truck.
Love these steel dash Bulldogs. 237 and 300+ Maxidyne matched with the 5 sp Maxitorqe transmission is a great setup. Sounds like 4 inch exhaust. Sounds so beautiful drove many a mile in these old dogs. Stay Safe out there, God Bless
In georgia there were many log trucks like those ,I mean many
300 plus was never installed in front of a 5-speed.
@@Jeepdriver75 NEMF had a few U Models had 300+ x 5 speed, excellent set up I might add
@@ChickennGritss a 300 plus is a 315 horsepower Thermodyne was never sold with a straight five-speed. They were sold with 300 Maxidynes for sure.
@@Jeepdriver75 Ever 300+ I remember had 9 or 10 speed Roadranger transmissions. It had a narrower torque curve and needed a few more gears than the 5 speed.
Seriously- is there anything more dramatic than a
M A C K attack?
The
Look the
Sound
The feel
Guddam transcendental experience
For
Me- I
Tell Ya ..I walk away feeling 😌
Your good. I love old MACKS
You need a slow hand to shift one fast.
That's what your doing.
Smooooth.
Best combo ever built bar none!!
I had a neighbor friend when I was a teenager who had a 72 R-600 that had a 6 cylinder Mack with a 5 speed gearbox. The tractor was set up for running chemicals and it had a pump on it that we rebuilt several times. I remember that he would run around 20,000 miles a month and he would bring it home to do the maintenance that we could do on it. Give it a bath and then he would be out on the road. He would mange to be home for awhile most days and then weekends. I was broken hearted when the news came that the crankshaft broke somewhere in Connecticut and he sold it for parts. Then he bought a 82 Binder Conventional with a Cummins and a Roadranger. At that point I was 18 years old and he taught me how to drive it. I had my Articulated license until he got divorced and moved to Illinois and then the government started with CDL’s. I had been injured in a motorcycle accident and I was concerned that the state wouldn’t allow me to continue driving. But that old Mack was a great part of my teenage years. Watching this brings back memories.
When we were using 5 speed R models for pulling log trailers we often had to get a skidder or dozer to push them away from the loader because they couldn’t take off in the soft ground loaded. 6 speeds could. I do miss driving R models though, the sound and feel of the transmission is unlike any other truck!
Yeah we also have 2 tri-axle dumptrucks with the 6 and seven speed. Even the six speed's first gear is a little high for my liking if you get into soft ground. The seven speed however has a great low and reverse gear.
@@DieselFuelOnly can you please post a vid of the Tri-axle Dump trucks?? Those are my absolute FAVORITE!!!!
Back in the mid 70's my dad had a number of R600 with twin sticks. I believe the one stick was for the five gears in the maxitorque transmission and the other gave direct, low and reverse. Low was only used in first gear, so the effect was a six speed transmission. (I was pretty young back then so I may not be remembering this correctly). Anyway, our trucks often had to start out heavy loads (120,000lbs. or more on five axles) in the soft ground of our sand pits. With the truck in low range in first gear it would crawl away without having to touch the throttle. Back then my dad was able to order custom trucks from Mack and have them tailored to our needs. This made them a very effective truck and the R-600 ended up being the only truck my dad would buy until Mack stopped making them.
@@DieselFuelOnly that 7 speed was something. An underrated transmission
In my book.
That must be a pre-1975 R600. My dad owned nothing but R600's (starting in 1975) but I've never seen that style dash before. Back then our trucks all had twin sticks and a very low gear for starting in the soft sand of our pit. At idle you could slide the stick into first with the clutch engaged and the transmission would give one click (no grinding) and then the truck would start to crawl ahead. A very low gear indeed. I miss the sounds in this video.
73 and older had the green steel dash. 74 was the classic cream color that most people remember.
Thats was the beggining of the R series(1965-1973) that they came with the steel dash.
The metal dash is the older ones we have a R 600 with the gullwing hood and it has it I was told it was last made in 1967 the 5 speeds woud make a good city delivery truck no split takes a bit of getting use to the long rev change between gears easy to use done a lot of miles with it now just a retired farm truck still working just not on the long hauls got a v8 Ultraliner for that
Its still a nice truck to drive not a bit rough to ride in very rough to ride in nothing has fallen off it alsmot identical to the day it arrived in 1983
awesome video, great sounding truck....thanks for making the video
Easy shifts, looks fun to me. More vids with this rig man.
Very well My friend maxitorque 5 speed happy day
That’s what I like is a simple 5speed transmission.
Yes, the 5 speed was awesome and fun to drive
Wow them must be wide ratio ..Look how long he has to wait for rpm to drop when shifting.drove a mack 18 speed it was tight and real close
Yes I have a Mack cabover with a five speed trans great truck
Which model COE do you have? I have a Mack COE that I’m rebuilding to use as my personal truck.
Tks. For the reply we have a 1979 cruise liner tks Dave nett
You bring back memories that's an older R model as well
My man!! good work!!..so glad to know you , and call you friend!!!
Same here buddy, thanks!!
Good job!!
Two days ago, I saw a vehicle that will haul that tanker...You want to get out of here, you talk to me...
None of these twits know the first fucking thing about that line. ahahaha great flick and good looking out on this one here...
That's the one and only Max Rockitansky MFP🤘
Air starter I love. Mack is the only truck I've ever seen that keeps 100 lbs of air pressure over a 3 day weekend.
Keep in mind the only thing airride on that truck was the airride seat. And the air tank was the big sidesaddle 50 gallon one.
Bad-ass....straight pipe is the only way to go!
They sound better than most motors especially when you lug them and make them pull hard
@@deborahchesser7375 100%....LOVE the mack R model my absolute fave truck. Used to see a MINT triaxle R Model all the time when i was riding my bmx bike and the roads near my house were being repaved. It was Straight piped and sounded absolutely AMAZING. Could hear it from so far away. SEARCH loud Mack R model oil truck on TH-cam here and that is a slightly tamer sound but exactly the same 💪🏼💪🏼💪🏼
@@redline350zHR I think I’ve seen it 237 with a 10 spd sounds damn good if that’s the one. Check out DM886SX it’s green with a 300 plus Mack motor it’s a true bad ass Mack
@@deborahchesser7375 yesss thats the one.. with the 10speed. 👌🏼👌🏼
The best straight piped engine sound.
Mack trucks are undefeated on that part.
Not Cummins nor CAT and neither Paccar or Navistar.They sound awful straight piped.
This is the only truck that you can hear it from miles away and y'all say:that's a mack,a bulldog is coming.
Nice shifting buddy
Sounding mighty fine
Keep it up youngin, I'm kinda glad I retired from trucking , be safe
I still love to show off if I can find a twin stick truck
They shifted slow as hell lol
I used to adjust my hat in between 3rd and 4th
Have a bite of sandwich? Haha
@@1_2_Many_Projects a whole meal on the old 15 and 20 spds
Shifting any Mack is all in the ears.......
Why fool with anything more than five?...Enjoyed it...TY...
I drive the same rig every day, the only thing missing is all those keys on my belt…going to get that squared away😊👍
I miss those old girls. I don't miss jamming my left pinky finger on the windshield pillar!
Ouch!
Does he not look like the lead singer of the Foo fighters
Bien sincronisados la maxidim los 73 51 🇵🇦👍🏾
Watchin' this and I'm missin' ridin' shotgun in bigrigs.
This one has particular pzazz too thing's been running for what 20~30 years? damn!
Slick drivin' to boot.
The dash styling indicates it's a 66 to 72 R-Model.
So over 50 years. The R-Models will live on forever.
I like my five speed but I'm looking for a mack ten speed to keep the rpms down tks Dave
Bro could you make a video where you shift and use the clutch bro?]. It would so awesome if you could…
I’d be mashing on that thing to hear that pipe. Looks like a good day at the office to me
Looks like a regular five speed to me. I drove a 75 r model with a maxi torque and it had a splitter and five reverse gears.
Yep I thought I was cool grabbing gears n hitting the Jake backing up lol, I miss that ol girl.
What model does it got
Does this truck have the 237 in it?
But I found that driving a Mack five speed vs a non turbo 6-71 or 8v71 Detroit is vastly different. The revs drop so quickly on those two cycle Detroits that you have to shift at lightning speed or blip the gas between double clutching. Meanwhile you have to wait for the revs to drop on a Mack five speed before shifting (read a short book! 😁) as I learned on an R model flatbed with a six speed T2060 with an Eaton tandem in 1991. Even driving a Series 60 is vastly different than the two cycle Detroits as the revs drop far more slowly. The revs didn’t drop quickly on the big Ford gas V8s like the 477 and 534.
Love that sound. Do you have any video's of this truck from a distance going through the gears? Or pulling a hill from a distance? Or even someone driving right next to you as you go through the gears?
No but can try to get you a video next time I drive it.
@@DieselFuelOnly Nice!
What year is your truck I got a 1969 R model with the same dash in it and what motor is in yours I got the 237 Mack motor in my truck would like to see more videos of yours thanks
not sure what year the R model was introduced , around 66 I think , this one here is a 1966-72 R model , looks like it has some good gears in the diffs, my first job as a mechanic, my employer had 35 R models , they were rough and yes , shifting from 4-5 when accelerating, you hoped you were not climbing a hill .
Oh, the sweet sound of a six-cylinder four-stroke Diesel engine...could this be Mack's own Maxidyne engine?
My dad drove a Mack R model It was a 1968 to haul grain back in the 90s till the early 2000s. I remember the shifter bobbing furiously at certain RPM's that you would get up too at speeds on interstates such as I 70 and I 75. No point to my post just remembering the past.
Put a 6 speed in that thing and a Jake brake . Shift with the Jake brake engine RPMwill come down fast so engine will never lay on it's face. Keep engine in its torque band 16 to 18 and you will save fuel. I did
What rpm do upshift in? There’s quite a lag in between the gears
21 and 12
The one 5 speed with the low end splitter is the most god awful thing ! thats the straight 5 speed .
Yeah this truck is a 5spd, we have a triaxle dump with the 6spd T2060 (5 speed with low range in first/rev), and another with the T2070 7-speed (5 speed with low in 1st/2nd and rev). The 2070 is much nicer for any kind of off-road application.
Straight up just 5 forward gears? What is the top speed in a set- up like that?
@@scav3155 It's a very wide ratio 5 speed so it'll run highway speeds.
@@mmiller1188 thanks for the info
What year is that r model.....have not seen that dash b4
66- to 72 . 73 had the beige dash .
Had a 71 r model with the same dash air brake buttons were down on the back wall of cab
Looks like your floating your gears.
What year is the truck
66-72 for sure. It's a Steel Dash Bulldog. 73' had the beige dash
@@B422TMack the kind that last almost forever
Ran a RD 300+ 6 spd worked perfect if you needed that low end gearing.
If not an E6 237 it sounds like the ole 673 or 711 Thermodyne Mack that were in my families B models & very Early R models ( 66 & 67 Models) back in the day. Green dash tells me that's an Early R model up to an 72 or 73 model @ the latest. I miss that sound on a daily basis.
Wasn’t 73 the first year of the tan interiors? I drove a 67 R600 that was a 237 6 speed and it only had two parking valves that were between the seats on the back wall of the cab.
Would it be possible to drop an E9 in an R600?
The hoods on the R600's are too short unfortunately.
You might be able to with the R700's, however engine compartment width may still be an issue.
The Superliner hoods were designed with the length and width to accommodate such a massive engine.
6:15 he could use a splitter but boy those little 237 could lug though.
Sounds like a 285 or a e6 300
237 ?
Probably a 237 300s didn't come out until 73
check this out.😁
Need a bigger steering wheel 🛞
Top speed loaded?
55-60 is all ours wanted to give
@@1_2_Many_Projects thanks
You’re in a Mack lol bring that seat up. Sit tall and proud Leave that low seat life to the Pete drivers.
I know. I thought he was sitting on the floor to start with. Why sit tall and proud when you can peer over the wheel like a little old lady on her way to church?
thats a 3 mph up a steep grade type of mack.
It's not built 4 speed, its built to pull the world around the universe. What other truck can do that🤔
Allison transmission is the best
hell no
That engine sounds like a cat engine