2 Gearshifts | Twin stick shifting in my Grandpa’s old Mack

1956 Mack LTH with a Cummins Big Cam 3 400hp and a Mack quadruplex twin stick transmission.
This is my grandfathers truck and the truck I learned to drive in. I wanted to take you guys along for a ride picking up the Caterpillar 977H to bring her home!

[@jeremyfunk9822]

What an absolutely beautiful truck Sam. Glad you and Matt are keeping these old beauties around for all of us to enjoy

[@horsepowerhorsepower3861]

Real Man's Truck....

[@earlbailey3767]

​@@horsepowerhorsepower3861😂

[@shanegaming2446]

@@horsepowerhorsepower3861😂😂😂😂😂😂😂😂😂😂

[@ricardogastmann9688]

Thank you Jeremy, say my words 👏👏👏 greetings from south of Brasil 🤗

[@robertbraun7155]

​@@horsepowerhorsepower3861 And real men are dying out way before that truck will..

[@TheFlyfisher54]

I did some work for an old Japanese farmer who had an old Hayes with an 871 Detroit with a 5&4 setup, that man made that truck sing, never missed a shift and no grinding gears. It was a thing of beauty!

[@herbdean9244]

never thats a lie

[@JC-zg4xe]

@@herbdean9244 Why would he lie about that??

[@jonnothetrucker]

Anyone who says they've never grinded, or missed a gear hasn't been driving long enough 😂

[@deborahchesser7375]

@@jonnothetruckertrue, we all scratched a gear or two when we started 😆

[@jeffm8235]

Beautiful demo of the Quadruplex. It really does paint the picture that this old iron has a personality and a mood.

[@ericlakota1847]

Of you ever drove fiat Heston tractor or italian made farm tractor same style shift except can only shift one stick on fly tranny 5:02 y

[@keithmounts5551]

it's not a quadruplex, it's called a Duplex!!!

[@SternDrive]

Who told you that? Maybe you did not watch the video. Duplex is two gears on the aux. This one has four. If you watch the video he has a plate on the dash that clearly says "Quadruplex". Are you new at truck driving?@@keithmounts5551

[@hoghogwild]

@@keithmounts5551 1:53 "20 speed quadruplex transmission with main direct in 4th."

[@Jasperdog710]

@@keithmounts5551 A duplex has only two gears on the compound and 5 on the main. This one has 4 gears on the compound, hence 'quad'.

[@tbys8]

In my opinion, this is one of the most beautiful trucks ever and I have full admiration for anyone who can shift gears cleanly

[@robertbraun7155]

It's not just shifting gears. It's a twin.. Thats a whole different beast until you learn it. Then it becomes twice the fun..

[@DavidBeckerSr]

❤ THAT MAC! I’m sure you and Grampa made a lot of memories together. He’s right there in the passenger seat EVERYTIME she is in use! As for me I could watch you shift her all day, what a great video ,thanks SAM!

[@ScrappyIndustries]

Thank you for watching!

[@joecoool100]

Grandpa loved you son….dont know the man but he loved you.

[@Jay-dr9co]

The LT's were one of the best looking trucks of the era and possibly the best looking Mack of all time.

[@ScrappyIndustries]

No doubt- they’re definitely my favorite truck

[@darrellbedford4857]

No, I think it was the B series. But your truck is gorgeous.

[@haroldphipps3457]

​@@darrellbedford4857my dad had a B model Mack. Mom named it old ugly. The L series is an awesome looking truck. Love the Autocar too.

[@tompaul2591]

​@@haroldphipps3457yeah the B is too bulbous. I like the LT R AND Superliner

[@ВасиаткаБезпутная]

Познакомившись с американскими грузовиками, вообще поразился тому-какие красивые грузовики у фирмы "mack"! В том числе и этот! Я то раньше думал, что мне кентворты 900 и петербилды 389 нравятся...

[@TKM1951]

I like the way you respect your heritage and the associated equipment- cheers

[@Hanky_Bannist8r]

That's a really pretty old Mack. I'm so glad someone cared enough about it to preserve it.

[@michaelmueller7405]

Beautiful truck .... amazing! And how you talk about your Grandpa .... is the nicest part. He still is with you as long as you have him in your heart. Awesome video ..... Thank you 😊

[@GarageWorx]

Thats just about the best theft deterrant I've ever seen. Sweet truck.

[@markpashia7067]

Hell, my five speed manual ford focus was a theft deterrent. Most car hijackers and thieves cannot drive a manual of any type.

[@bobhudson6659]

Everything I see about you says you have a heart of gold. Your love for family, mates, equipment and also the way you relate to others. Your video editing has also come on in leaps and bounds; a lot easier to watch. Keep it up. May our Lord continue to bless you.

[@ScrappyIndustries]

Wow, thank you for your kind words!

[@elesjuan]

She's a beaut, Clark. Love how excited you get driving grandpa's old truck. Really wish I had something and a memory like that I could've shared with my grandfather, but they both passed when I was so young. 😞

[@CGT80]

I know how you feel, in a way. My dad's dad passed before I was born but I turned out quite similar to him with all the mechanical and precision stuff I do, as well as personality. There is a connection, but I only know him through my dad's memories. My mom's dad had a huge influence in my life since I was his first grandchild and I grew up around the corner from him, so I got to experience all that and have his firearms, fishing stuff, toolboxes and a few tools. I wish you could have felt and known what we had.

[@user-ts1fp4nm9y]

Your grandpa did some good 👍👍 work. It's great you keep his memory alive!!!

[@terryrogers1025]

Truck is definitely be theft proof with a 2 stick shifter in today’s society, most people can’t even handle a 4 speed manual trans today. The ole Mack is a beauty for sure, thanks for the ride along sir, enjoyed it.❤

[@jbagsz1234]

I don’t know why I’m soo confused with this setup lol

[@ScootsMcPoot]

It's just shifting with extra shifts between shifts. Lmao

[@DBs58]

Sam, thank you for the ride-a-long in what I can only say is a beautiful truck!! The family history and memory you have with your grandfather plus the passion you have is what makes this a special video! Again, thank you, sir, for sharing such a great video!! *new subscriber*

[@kevinmurphy3464]

Wow, your grandpas old Mack tractor is beautiful Sam! Love the paint scheme with tan interior and the British racing green exterior. Keep that bad boy in tip top shape and he will be with you smiling on every drive! By the way, she looks good pulling that dozer…

[@michaelmcclintock4350]

Great tutorial. I learned on one of those in the 70’s. The only thing you missed was to carry (2) 2’ pieces of rebar to unlock them from underneath when they’re both get locked in neutral! Not many drivers left that can run one of those! Beautiful truck, so glad you’ve kept it in such nice shape! Your grandfather would be proud of you!

[@4051a]

I love that truck. I met your grandfather several times but being 70 years old I don't remember his name. Keep it rolling.

[@AaronTheViking250]

your grandpa would be so glad and proud of you for keeping his truck going. And it still looks brand new like it did the first day he drove it off the lot, so you're doing him proud, and he is sitting there with you like u mentioned.

[@CGT80]

Wow, I can relate to this video! While I didn't get any vehicles from my grandfather, I do have firearms, tool boxes, tools, and fishing gear from him. Every time I walk in my garage, I see his old long time tool cabinet and the new stainless one the family got him after he was no longer able to do much but he still had the desire. I use his win 94 lever action rifle to win the lever action silhouette matches at the club I belong to. I used to stop by his house after a match and show him whatever pins I won for that match. I still fish with the pole he taught me on back when I was in kindergarten. My dad is similar to my grandfather (mom's dad) and I am much like my dad's dad, who passed before I was born, and then my uncle (aunt's second husband) hired me as a teen to work on their house and with his painting and construction business, which just lead me further down the path of working with my hands. It is cool to see someone else who appreciates a similar background passed on by generations before!

[@keith4886]

WHAT A TRUCK! I really like the color too, sets off the chrome nicely. I really like the style of the older trucks.

[@georgeenriquez612]

Sam you make some awesome content! Keep up the good work buddy! That Mack is beautiful and I’m sure your grandpa is proud of you

[@ScrappyIndustries]

Thanks a ton!

[@customconnections2425]

Grandpa is DEFINITELY proud of you. No doubt! 😎👍🏾

[@jimcampbell8061]

Trouble with old Macks is that every nut and bolt had to come from Mack. They were notoriously underpowered for use on modern interstates

[@johnhughes2043]

The LT was one of the most beautiful Macks ever built. Grandpa did an unbelievable resto and update on it!. First vehicle Dad taught me to drive with was a long hood B with a triplex in an A & P parking lot on a Sunday afternoon many many years ago! Those old bulldogs where the best of the best. This old dog is in excellent hands! Goes to show “all good dogs go to heaven” . Thanks for the vid.

[@toddherbrand4507]

Sam your trucks are a beautiful example of an amazing age of trucking thank you Awsome video

[@michaelmiller7208]

Nice old Mack! Looks like he done a great job!😊😊

[@e020443]

Back in '79 I learned on a '65 Autocar with a 5 and 4. The truck I owned later had a Fuller 9 speed. Like your Mack it had a 22" steering wheel to go with the armstrong steering. Nice to see the trailer brake lever where I'm used to seeing/using it. Definitely a nice trip down memory lane -- thanks.

[@The1cdccop]

My Grandpa drove one of those LTH's for Roger's Trucking in the 1960's. His first truck was a 45' Pete that he and his dad purchased to do OTR in 1949. He never liked the Bulldog's for some reason. Beautiful rig.

[@IchliebeHunde58]

I couldn’t think of a cooler tractor…forest green old Mack with (my favorite) Big Cam 400 Cummins, and a 5+4 twin stick. Love it, love it, love it. Thanks for sharing suck an awesome truck

[@johnmccormick175]

Wow what an awesome job your grandfather did restoring that truck,it's beautiful and sounds so sweet,thanks for sharing Sam and stay safe.

[@firewalker1372]

Man, that is a great looking rig. Your grandpa did a dang jam up job restoring this piece of history. Thanks for the lesson on how to shift a twin stick. Will probably never drive one, but now I know how to 😂

[@nightowlrally]

5:25 - Let's take a second or two and show some gratitude for our grandfathers for their priceless lessons (and of course, a few things that our parents didn't know about) and memories like this. Absolutely beautiful truck, Sam.

[@jimmackey2909]

Well that totally screwed up my idea of how you shift a 5 & 4. lol Beautiful machine and well kept. Enjoyed seeing the old houses at about 8:20. My dream homes. Still more solid than today's offerings. Thanks for all this.

[@ericksoncraig2519]

I'm 68 yrs old and I drove a 63 Mack 10 wheeler dump truck with a cummins and quadruplex trans . One of the hardest 2 stick transmissions to master. Nice truck. Anyone would be proud have a beautiful classic like that.

[@paulcost6446]

Beautiful old Mack. a art to shift the gears on this old girl, but it still kicks butt pulling a load.

[@klrwhizkid]

My grandfather drove one of these same trucks in the late fifties and early sixties. I rode with him once in about 1961 or 1962 when I was seven years old. Watching him go so smoothly through the gears on the twin box, up-shifting and down-shifting was mesmerizing. Sam, your grandfather taught you well and would be proud!

[@adamgandy6470]

Thank you for sharing your grandfathers Mac truck with us. I’m a third generation truck driver. I miss my grandpa and my father. Thank you for sharing man we love your channel and your content ❤❤❤❤❤

[@pointingdog7235]

The L Model is beautiful and I was happy to see a modern day driver still double clutching. Your grandfather has to be proud of you.

[@D8PETE]

Great video Sam! Great truck! Motor sounds sweet! I miss your Grandfather too. He & Erma are/were a class act.

[@lorrainesheatsley]

That ol’ truck makes my heart go pitty-pat. Beautiful. As someone who has always appreciated the big tractors but never got to ride in one, thanks for taking me along for the ride and explaining the gears.

[@pauldillinger2286]

That is a gorgeous 1stack mack with the window in the back. Sounds awesome. Thanks for sharing that buddy.

[@geofferyshanen7758]

Sam, great video, thanks for the great content. I love the old make what a beautiful old sweetheart! I use to drive a heavy duty wrecker with twin sticks . It was a long nose KW with a 425 Cat under the hood. Have a blessed day, thanks again.

[@jeffreyharman9145]

Beautiful truck, and it's great that it was your Grandpa's truck and what you learned to drive on.

[@adamgandy6470]

What a great tutorial on twin sticks I learned in a old Mack cabover in 1970. I miss my pops and grandpa 😢 thanks for sharing ❤

[@dogsbyfire]

Dude! That was totally awesome! I’ve never been in one of those trucks, and this is probably the closest I’ll ever get. I really, really appreciate this video. I think you did a great job on the shifts. Your grandfather would be proud!

[@johnypitman2368]

I lost my maternal grandfather in 1959, I was three and I lost my paternal grandfather in 1970 and i was 15. I have some memories of grandpa Mac and many great memories of grandfather Elgin. Grandparents teach you that old people are the best and you never forget them.

[@vintageiron6905]

I miss talking with your grandfather about our buses we stayed in at the Brownsville show. He had the Mc5 MCI and we stayed in our 4104 GM. Very nice video Sam.

[@RobertBrothersJr-dc7nr]

I absolutely love your grandfathers old Mack. Great job explaining the transmissions and showing how to shift the old girl. Driving those old trucks definitely separates the men from the boys. I really enjoyed the video thanks.

[@CaptianKaos]

Now that is truck driving. I had the pleasure to drive a 5+4 and a 10+4 in my career. Really liked them for the loads we pulled. Your Grandpa's truck is Beautiful. He did a Awesome job restoring it. Thank you Sam for sharing.

[@jeepcj3b436]

Nice tribute to your grandfather. I'm sure he'd be glad to know the old truck still working hard.

[@grantensrud9185]

For me, this video isn't about the twin sticks as it is that beautiful classic Mack.

[@jdhinckley1954]

Man oh man, what a beautiful truck! And to have it be a connection with your grandfather is icing on top. I do remember driving one of those twin stick Macks in the 70's. Needless to say, I made a mess of it the first time out... And that yard with all that old iron. Would love a couple of hours there with my camera. Anyway, thanks so much for sharing this. John Vermont

[@chongshenchang9367]

Sam, old is gold. I really love seeing that old Mack hitting the road. Thanks to you and your Grandpa...👍👍👍

[@m73m95]

When I first started running cranes, 25 years ago, we had a few old cranes with "brownies". Except, in a crane, the cab is so small, the sticks are north and south, instead of side by side, like in a truck. Every once in a while, you'd get the rear stick (the main box) with your elbow and put it into neutral, while you were splitting with the front stick...and then you'd have them both in neutral. It was a nightmare to get through town with. Good times! And, it's kinda funny how times change. That Big Cam 400 Cummins was unbelievably powerful back in the day! We used to fight over the truck with the 400 in it. Now I don't think we own a truck with less than a 550hp engine in it, and they're just plain old trucks we use to haul boom.

[@theflyingfool]

4:33 I wonder if you notice the slots in the screws holding all the placards to the dash are all lined up horizontally and the crosshead screws holding the switches are also. Neat, and a sign of attention to detail. Beautiful truck!!

[@Strider1954]

Can see the future where practically nobody will understand this., I love stick shifting best but don't even get the chance now. Twin Sticks are wild, thanks for the ride along.

[@59MackB61]

Very well done! No apologies necessary on grinding a little now and then, We don’t drive them every day and there is an art to it. Great point on timing stop lights. Headed into the first stop light at the Ballston Spa show I caught every gear going down to a red light without grinding and was quite proud of myself. The guy behind me talking on his phone and drinking a latte while trying to park under that big old Mack Differential was not at all happy for me. Great job and thanks for sharing!

[@markpashia7067]

Yeah, but he did not get there any sooner for driving under that differential did he?

[@stevenlatham4397]

When he talked about faking it and holding the throttle steady In neutral to avoid embarrassment, I laughed because I have done that. 😂 My grandpa had me running a double stick Detroit pulling a pup when I was 14-15 years old. It was loud and everyone looked.

[@gregwitkamp5583]

Beautiful Truck, My first experience in a old Mack two stick was a B42 gas 6 cylinder , what an experience

[@gullreefclub]

That is one sweet looking Puppy Dog and I have a soft spot in my heart for trucks with twin sticks mostly because I drove trucks with them when I first started driving

[@marklambert3428]

Beautiful truck Sam. I remember my father talking about the old Mack two stick trucks. In Australia they called the secondary gearbox “Joey Boxes” because they were a baby gearbox attached to the mama gearbox :) I never got to drive one, sad to say. You take good care of that sweet rig!

[@metalnewsnetwork3116]

Wonderful looking truck and great video talking about the differences with demos. Is a good video to show my co-worker who is getting his CDL.

[@jaygraham5407]

Your Grandpa was AWESOME!!

[@JD-rf1xc]

Beautiful truck, and hats off to you, you really make it seem easy to shift this truck.

[@robertp.wainman4094]

Boy - mastering those gears is a real art! Great video to watch - don't think we ever had the twin sticks here in the UK, but two speed back axles were quite common years ago.

[@DrDoom-uu3cj]

I learned to drive an old 1960 Pete with a four and four trans back in 1979. Can't tell you how many times I didn't square off the "brownie" stick and had to pull over to the side of the road, crawl underneath and push the connector rods back into position for the shifter to be aligned to drive again.

[@Framo60]

Now that is REAL driving ... 😃 Thanks for showing how it is done! As far as I am concerned, I would have gladly watched the whole journey without any cuts - watching twin stick driving never gets old to me. And while you have explained the principal shift logic very well before starting, it was still somewhat difficult to figure out the reasons why you shifted at certain points (and why you did not shift at certain other points, although the engine sounded like a higher gear might make sense), because the viewer cannot 'read' the road ahead as the driver can (and has to). Also, it is somewhat difficult to judge the actual speed of the rig at any given time - I was quite astonished to hear that you were only going 20 mph at a certain point, it definitely looked faster than that to me.

[@randalldrake4704]

Yeah, and 75k can make that seem pretty fast on the down hill side too!

[@markpashia7067]

20 on that uphill grade was actually pretty amazing. Video is hard to show grade but I was watching the houses out the window behind him and I kind of know that part of the state. That was a steep grade two lane for sure.

[@johnwesner3935]

Beautiful old Mack. We all have those special memories of our grandfathers. Back in the day I drove a IH tandem dump with a 5 and a 3. Most operations today are being forced into automatic transmissions in order to get drivers in the seats. As you know there's a difference between knowing how to make a truck move and really knowing how to drive the darn thing.

[@wim0104]

excellent instructor

[@raystarky3896]

Your a Blessed Man having and getting to drive that beautiful truck, I had a 1971 with a small cam 350 and a 13spd. But the 84 Kenworth i had a Big Cam III 350 not quite like yours, Great Video. Thank you.

[@ricksmith-iw2op]

Nice job Sam. That is a beautiful truck.

[@thierryvt]

Old American trucks are the best trucks. In looks and sound.

[@HistoricMachines]

Sam, to me this is the best KZbin video that I have ever watched! Keep up the great work! Never meet your grandfather but I believe that he would be proud to see how you continue to take care of his machines and collect your own. Yea I do like that truck, maybe I could catch a ride someday if you have it at Brownsville, I could be your camera man.

[@BunGeBuRkLEy]

This has to be one of the best videos I've seen demonstrating and explaining the twin stick shifting. What a beautiful old Mack as well. Yes, I agree with a lot of comments here. Your grandfather would be proud of you with the respect you show for this wonderful old Rig..

[@randypurtteman1183]

This sure brings back memories! I learned to drive on an old LF mack with three sticks. Five speed main, three speed aux and two speed rears. My uncle taught me over a period of three summers. He could split shift all three without using the clutch. His hands were like a blur. He could make that old Mack scream. No Jake. It had a big water tank that he could spray water on the brakes to keep them cool. They don't make truckers like him anymore, God rest his soul. Great video, thanks.

[@binadybudhi5234]

Thanks Sam for showing how the gear shifts. Awesome.

[@detroitgarage9430]

Nice old Dog.:)

[@selfofthephalanx]

That Mack is a work of art on wheels. Glad to see it well kept and working well

[@mrtjbiga1784]

damn thats a nice truck

[@fredschneider5352]

been on the road over 40 years seen a couple of these 2 stikers but never in action. thanks for the demonstration video

[@jamesadams1064]

What a beauty!

[@bombardier3qtrlbpsi]

You can say that again.👍

[@bombardier3qtrlbpsi]

Next to our shop was 8 truckers 7 cab overs 1 Mack R series. I Very young at the time the guy would let drive the Kenworth Cab over 5&4 around in the field. My early teens I got to back it up to a trailer. One I got the hang of it when he would come back from trips or ready to go on a trip. I would hook up or back up and unhook and put the truck in the shop. Lot of fun at that time.😂😂

[@ScrappyIndustries]

Thank you!

[@TimSmith-si7rv]

Back in '68 & 69 i learned in R models and a B 61 how to shift duplexes....what an education for a kid!!

[@jason0870]

The gren mack is a beautiful rig. Appreciate you sharing it here.

[@danpuro5018]

Beautiful truck, I drove a Mack DM model with a 20 speed quad, with a 335 Cummins back in the mid 80’s, fun to drive.

[@michael_3985]

I love that truck Sam. I got over a million miles in a 18 speed and I have driven the dual stick but I trained students and some hardly could shift the 18 , I could only imagine teaching them on the split stick. I use to double clutch the split stick or sometimes dot even use the clutch. Good video Sam. Your grandpa probably is still sitting in his seat you just can’t see him.👍👍👍

[@gregdimtroff6397]

Excellent driving, Bravo for the Mack and Trailer. And your Grandpa for the restoration on the truck. Be safe. Enjoyed the video and hope to see more..

[@nickrehmani]

Thank you for sharing your story about your gramps , I appreciate it!! God bless

[@hollywinsman9464]

The Mack is beautiful. You drive it well too.

[@ronaldjoyce7374]

She’s gorgeous 👍🏻😊 Thanks for the ride. Ron

[@ronmack1767]

Enjoyed the video Sam. Your Grandfather did a great restoration on the 56 Mack. I believe you have the shifting down pat. Thanks for the video. You take care and God bless.

[@GlenKennedy-gz5hl]

Absolutely immaculate.You must be very proud of yourself and that old girl .As l am sure your grand dad would be .l have never seen a quad box in operation before .Thankyou.

[@michaelwhite6112]

My drove a coal truck for 39 years I went with him every time I could we would move heavy equipment on the week ends you do a great job

[@alvestonroots]

Thank you for your video! Brings back my joy of riding with my Dad in his old Mack. As a boy my chance to spend the day with him and his old Mack was a joy.

[@timhallas4275]

I actually learned how to drive a stick shift trans on a Mack B-62 cement mixer. Never drove a manual trans, until my dad got me a job driving cement truck for the company he worked for. I had another driver show me how the two stick trans worked, then I took my turn and 15 minutes later I was loading up for my first haul. That was the most fun I ever had on a job.

[@mikek8089]

What a great tractor!👍 The only thing missing is an air start.

[@ericbitzer5247]

Absolutely gorgeous old truck! I love to see old trucks saved and you don't see too many. Not much built today has any personality.

[@brozelmotorsports4234]

I live in Texas now and have never seen any of you vids before. When you were timing the red light and I watched the scenery go by, it hit me that was Beallsville! I grew up in Scenery Hill. Love the truck!

[@bip4all]

Amazing demonstration of the twin shift, love it!

[@greggstroud7580]

I really enjoyed your content, I ran a 62- B61 with a 5-3- and 2 speed differentials , loved that o’l girl , thanks for the video, your Grampaw would be proud

[@geneporter4849]

Man that's a good memory of the first Mack I drove one like that with a big maxdine 500 horse motor in it and I could pull any thing I hooked to I pulled a lowboy moveing a D9 from job to job down here in North West FL and south Al. was still being used by the grandson of the man I worked for but he just pulls a edd dump with it now and then good old truck . they don't teach people how to drive one of them in the driveing school.God Bless Y'all and you are doing good to keep them old toys a live