Chrysler Master Tech - 1959, Volume 12-12 The New 6-Cylinder OHV Engine

MTSC - 1959, Volume 12-12 The New 6-Cylinder OHV Engine
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[@desertbob6835]

The Chrysler Slant 6 was one of the most rugged sixes to ever be built, despite only having four mains. Good engineering proves itself over time.

[@79tazman]

Yeah but the mains were the same size as the 426 hemi

[@slant6guy]

...courtesy of Willem Weertman ~ designer of the Mopar 2nd Gen. HEMI motor!

[@Joshie2256]

@@79tazman Yes, but the RB engine with those 2.75" main bearings came first.

[@moparmaniac5206]

Well you gotta realize that inline 6s wether they have power (BMW) or not (Chrysler, Ford, GM) they all last a long time. It’s not as small as a inline 4 that combats more secondary forces, and it’s not as unbalanced as a V6 that also deals with secondary forces. It’s long, it’s easy to understand and work on and it’s a design that has proven the test of time

[@marcusdylan8390]

You all prolly dont care at all but does someone know a way to log back into an instagram account..? I stupidly forgot my login password. I appreciate any help you can offer me!

[@adamtrombino106]

1 of the best 6 cylinder engines ever built. It was used in everything from industrial applications, to 1 ton trucks. Nearly bullet proof. 1960-84 in cars, '86 in trucks.

[@cutsrosescents4950]

Adam Trombino I have those trendy hydraulic lifters so I just have to torque the head.And that Hi-fi lean burn spark control,oh those wacky Dodge Bros. what next?

[@cutsrosescents4950]

Adam Trombino I have those trendy hydraulic lifters so I just have to torque the head.And that Hi-fi lean burn spark control,oh those wacky Dodge Bros. what next?

[@deuce1606]

Adam Trombino I have a 63 D500 with a curb weight of 6500 pounds. Gvwr is somewhere around 16k and it has a 14 foot dump bed. The power plant is a 225 slant 6 with single barrel carberator. About 55 is top speed and puts the engine close to red line.

[@Bartonovich52]

Terrible engine. Ours was burning oil at 50k and had such low compression that it couldn’t hold the vehicle on an incline. The power of a four cylinder with the fuel efficiency of a V8.

[@hyperluminalreality1]

Terrible engine?!? You have to change the oil, troll. This engine has entire drag race days dedicated to it. Name ANY other six with that following. My 225 pulled a car on a trailer and when the electric radiator fan died it never even overheated. I found out by sitting too long. It spewed a bit, but once moving it cooled back down. I did fix the fan. Mine gets 18MPG while pulling HARD. Too bad about your experience and attitude. The entire world around you has had just the opposite reality. It is one of the best EVER inline 6 engines. Nascar had a race for pony cars. Chrysler entered 7 Valiants with slant 6 engines. Ford Chevy etc. The slant 6 cars came in 1st through 7th place. Nascar shelved the entire pony car concept after one completely one sided race. Terrible engine huh? Nope. It's you, dude.

[@Paramount531]

Back in the mid seventies, my auto shop teacher used these old filmstrips to teach the basics and they were perfect for the job!

[@karenmarieh.j.3842]

I.... I .... couldn't stop watching this video .... I am a Ford person, but there was something about this video. It reminded me of school videos from the 70s that were still in the schools, in the early 80s. Dear goodness, i was having flashbacks. I was waiting for one of the guys to start talking about "duck and cover".

[@jondickson75]

And once the oil pan is on,,,,, you’ll never have to remove it. Best motor ever.

[@PeopleAlreadyDidThis]

My dad had a '62 Dodge Lancer with a 225 slant six. He used to have a lot of fun embarrassing kids in Mustangs leaving red lights. That engine had so much torque with its farm-tractor stroke that it was a real contender for short street races. Ours was the aluminum block, too; quite a bit lighter. And yeah, that bypass hose was a bear!

[@MsJinkerson]

best engine ever built

[@packingten]

The 318 powered America along with the 225 both legendary.I had one of the last TRUE Chrysler products ever made the 1983 Chrysler Cordoba. One of the BEST cars I ever owned. We were heading east for Colorado,Filled up in western Kansas.Had cruise cont set.Went about 110 miles according odometer.Brother had to hav b room stop,I FORCED a little over 3 gallons into her, FORCED,It had the lean burn system,they either worked or didn't mine did.. So figure a V8 that went 110 miles on 3.1 or 3.2 gal of fuel,plain unleaded not prem si 31 or 32 mpg V8. We were going 55 cops were out cruise and eastward,I would kill for it back!.

[@teresa67factoid95]

Still driving my 63 signet convertible. Slant 6. A million taxicabs back in the day can't be wrong.

[@Bartonovich52]

That’s why they dumped them and went to the 305... then dumped those and went to the 4.6, then dumped those and now use the 1.5L hybrid engine.

[@2RCPRODUCTIONS]

I learned to drive in a 68 valiant 100 with this engine in the 170 variant, fantastic engine reliable and efficient! Not fast top speed was about 70 in that car but never left you stranded

[@martyisabeliever]

This is pure gold to a slant six hot rodder thanks :-)

[@carlstclair-it8ij]

Had the 225 slant six in a 1976 Dodge Aspen 4 door the 225 engine was bulletproof and outlasted the body.

[@79tazman]

My first car was a 1979 Dodge Aspen 2 door with the Super six 225 it had a 2bbl instead of the single bbl carb but that thing ran great and I beat the heck right out of it and it would always start even in the dead of winter when everyone else was having issues getting their car going

[@skylinefever]

My dad had a 1977 Plymouth Volare, which was similar. However, the electronic lean burn was an expensive pain. When he divorced, he was happy to leave it with the ex wife and then buy a 1979 Toyota Corolla.

[@kellyjones841]

These are excellent videos! Watched these in high school in the seventies. Learned about gas wash on cylinders. Have never seen it covered anywhere since.

[@agostinodibella9939]

This has to be one of the best engines Chrysler ever built!

[@ericwoy4132]

1982 D150 slant six, single bbl carburetor with lean burn. Runs perfect!

[@DCValiant68]

makes me love my mopar even more

[@chrisj197438]

Drove cross country after high school in a 79 aspen with a slant six. Car made the trip no problems. Four guys fresh out of high school will beat the hell out of a car and it held up fine. Thanks to that car we have memories that will last a lifetime.

[@randallgrenier3582]

That's awesome

[@warrenbuchanan8602]

the best feature that the slant six has is that curved runner intake manifold . it gives more equal fuel distribution to the cylinders . it is the only inline six engine made in america that has that . chevrolet 230 , 250 and 292 sixes are known for running to lean on the number one and six cylinders . and have you ever looked at a ford 144 0r 170 , the manifold runners make a 90 degree turn . only chrysler cared enough about the driveability of it's design to produce theirs the way they did

[@skylinefever]

My dad said that many car companies were interested in making the inline sixes cheap, that is probably why Ford and Chevy had such awful designs. The slant 6 would need more complex casting methods in order to build, making the base model car more expensive.

[@sking2173]

Skyline Fever - those Ford small 6,s (144, 170, 200, 250) had the intake casted integral with the cylinder head. Not unheard of, even today, but definitely an economy-car only design. The MOPAR 6 was definitely the king of American sixes back in that era ...

[@michaelbenardo5695]

Chrysler used to advertise "Extra care in engineering". It showed.

[@michaelbenardo5695]

@@skylinefever Your dad was correct. Chevy Stovebolts always shake when you start them, because they start firing on cylinders 3 and 4, then the others kick in. I have dual carbs on mine. Much better acceleration. Even Chrysler's flathead 6 has a better porting layout than Chevy's.

[@lionheart1867]

The voice of Tech is Denver Best (Uncle Jessie from The Dukes of Hazard).

[@andyharman3022]

Uh-oh, you're mixing the names up. Denver Pyle played Uncle Jessie. It was James Best that played Sheriff Roscoe P. Coltrane in the Dukes of Hazzard.

[@mikewhite7462]

I had 4 of these motors and all were worth the money

[@mkerbker]

Why could i not have seen this a year ago. This answers SO many different questions about my car AND truck that I had.

[@alanwood5857]

Had a '69 Dart with a 225 years back, it was so easy to work on, tons of room. No powerhouse, had over 200,000 miles on it but ran like a clock all day long. You could put a Hyper-Pack on these too. Way better than Ford or Chevy straight 6's.

[@Toolaholic7]

This was a bullet proof engine too,could not kill it at all

[@michaelvaus]

wafrederick My dad did. He hit oil pan, and it leaked oil out. He had a 1966 Plymouth Belvedere

[@Bartonovich52]

Sure you could. Ours was burning oil at 50k and had such low compression it couldn’t hold the vehicle on a hill. Sure.. nothing that a valve job and new piston rings couldn’t solve... but not worth it for a Malaise Era Dodge in the mid-1980s.

[@hyperluminalreality1]

If your 225 burned oil with no compression at 50k then you never changed the oil or maintained it. I have a 225 in a 1950 ford F2 with NO cooling fan. It has to move to cool. I have towed trucks on trailers with that rig. 1972 Valiant engine, 904 auto trans and 7 1/4 rear end all went in the 1950 F2. Runs great to this day. Just rebuilt the Carter BBS from a 1977 Aspen Super Six 2bbl intake I installed years ago. Both this truck and my 1965 Valiant daily driver have 1989 Toyota V6 3 core all metal radiators retrofitted. Way better cooling. Like I said, no fan at all on the 1950 with 1972 Valiant powertrain.....

[@selfdo]

@@Bartonovich52 Mopar's quality control went to hell in the late 1970s and damned near killed the company. That you got a bad engine is no surprise; still, in those years, Chrysler did offer a 5 year/50K engine and drive train warranty, which is kinda "chintzy" now, but was HUGE in its day (most warranties were 12 months and 12,000 miles, after that, you were on your own), so it's too bad you or whomever owned it (your parents?) didn't catch it, likely not a lot of miles were put on it so the warranty expired by time. And waiting to change the oil until the scheduled interval by MILEAGE, instead of time, will result in corrosion of bearings and piston rings enough to cause oil burning and poor compression, even if the engine was well built initially.

[@skylinefever]

@@selfdo My dad suffered greatly because of that short warranty. He drove a 1977 Plymouth Volare, and the Electronic Lean Burn module stopped working soon after the warranty ended. I guess that didn't count as an engine part, and was instead counted as an electrical part. When he divorced his first wife, he left her with that car and bought a 1979 Toyota Corolla. He chose it because he hated the Chrysler group with a passion because of it, and because his 1971 Toyota Corolla was a good car. The ELB modules were the death of many 70s Chrysler cars. I don't think computerized engines were a problem, Chrysler's method of doing it was a problem. The Datsun 280Z wouldn't have become famous of Bosch K-Jetronic didn't work well.

[@N2YTA]

When prepping a new car for delivery the tech was supposed to check the torque settings on the rocker shaft? Wow!

[@KingHarvestHSC]

I'm learning all about the Slant Six as I recently bought a 1966 Dodge Coronet 440 with it. I never worked on them when I was younger in the 1960s and 1970s. It drives very well even in the bigger and heavier B-Body.

[@jamesatkinson6480]

In Australia, the introduction of the RV-1 series Valiant in 1962, then the SV-1 series in 1963, had this engine, fitted with an alternator, and the oil filter piped to the opposite side to cater for the RH drive steering system. Several models ensued, (AP-5, AP-6, VC, VE, VF) leaving this engine the longest in production (finishing in 1970) with sedan, utility, coupé and 'safari' (wagon) variants. A very reliable engine.

[@79tazman]

Chrysler went from a flat head 6 to the slant 6 in 1960 and that was in production right up to damn near the 90's that's how good that engine was

[@jameswagoner3309]

And still made that Flathead 6 for industrial, and agricultural Machinery throughout the 70s. Those flatties were used in Massey Ferguson tractors on till just about 1980.

[@loveisall5520]

That was the best OHV six postwar.

[@ctg6734]

Man how I wish this engine was available for the 1957 cars. It looks so much more appropriate than the old flathead.

[@michaelbenardo5695]

It was originally conceived for the car that become the Valiant.

[@ctg6734]

@@michaelbenardo5695 Yes, but honestly something like this engine should have been in the works far sooner IMHO. The fact that the slant six was conceived in '58 and actually in production in '59 for the 1960 model lineup is impressive to say the least. They knew the flatheads were outdated in the late forties so I'm surprised Chrysler didn't develop a more advanced six at that time. Several prototypes were made (including hemi head versions) but none made it to production, which is unfortunate. Would loved to have seen a hemi six or even poly six cyl inline.

[@michaelbenardo5695]

@@ctg6734 Would have been nice, but Chrysler thought the 6 cylinder engine in full-size cars was going to disappear, so they felt that developing a new full-size 6 was just not worth it. The sudden burst in demand for 6s in the 58 recession changed their mind, so they added a larger displacement version to the Slant 6 program.

[@SCTV59]

Ahhh...1959, the year I was born! Clean lines in architecture, space race and the SLANT SIX!

[@garymckee8857]

Tech sounds like he's been smoking Chesterfields and drinking Schlitz all night.

[@skylinefever]

By the 1980s, his smoking habit probably forced him to use a Chrysler electronic voice module to talk.

[@garymckee8857]

@@skylinefever 🙃👍

[@ericwoy4132]

My grandfather graduated from Chryslers mechanic school in the 1930s. Luckys and Schlitz wasn't just for breakfast.

[@michaelmartinez1345]

Great engines!!! This slant-6 engine had decent torque and power and gave excellent fuel mileage on regular gas... Great for daily driven vehicles... The 'A' body vehicles were outstanding with slant-6 engines...

[@terrymeyer9895]

I always liked the Mr. Tech series! I've got some books and audios from back in the '60's and '70's Great stuff!@

[@randallgrenier3582]

Wow I'd love to see some of those

[@sunny-yl4pr]

Great video. Thankyou for uploading. I learned some things about the slant six.

[@chrislemaster2695]

Chrysler should bring back the 225 Slant 6 add EFI and you would still have a leaning tower of power and bump the hp to 300-325 hp.

[@pacbeltrr38]

Chris Lemaster - That's actually possible...... but corporate sidestepping and loonie ex Hippies would prevent that from happening. 😑😣 Gives me an idea though! Build one for an older Car, using modern, vastly improved components and Engine Management Systems, performance Cam, intake ported, polished and drilled to fit injectors in each runner, a matched throttle body with CAI, Coil Pack Ignition, a good Dyno Tune.......... And a few other tweaks, and I believe that 350-375hp is possible!!! 😎👍👍😱😵😀😀 .......... Upwards of 450hp with a Turbo!! Just Sayin' 😉

[@fk4515]

but there are no cars with an engine bay big enough to hold it and the V6 is a cheaper engine to build for the base pick up. Much of that is a by-product of the CAFE standards imposed on the US auto market

[@skylinefever]

V6 engines often exist because they are easy to package under the hood. They also lead to a car that is smaller overall. BMW is about the only car company who wants to build cars with inline 6 engines. If you want to see the difference in car length, I suggest looking at a Datsun 280ZXT and 300ZXT. Although the car lines are much different, many parts underneath the car interchange between the 2. Another idea is to look at a MKIV Toyota Surpra and Nissan 300ZXTT. They have similar curves, but the Supra has an inline 6 and the Nissan has a V6. It is easy to see the difference in length.

[@slantsix6344]

@@skylinefever Front wheel drive is the only reason for people getting rid of the inline 6 engine

[@skylinefever]

@@slantsix6344 No, there were some V6 engines made only for RWD or 4x4 trucks. The GM 4.3 V6 and MOPAR 3.9 were two such examples. There was another reason those engines were developed. Inline 6 engines with one carb would always have an air fuel mixture on cylinders #1 and #6 that were different from #3 and #4. This problem didn't happen on V6 engines, so car companies could continue to use carbs for a few more years, and later on, use TBI fuel injection. An inline 6 would need multi port injection.

[@selfdo]

Note the GENERATOR, which was used in the 1960 models when the Slant Six was introduced. I believe it was 1961 when Mopar went over to the alternator, and mounted it to the right of the front of the valve cover, with one bracket going to the head and another to the front of the block. The space above and to the left of the water pump was reserved for power steering and/or the A/C compressor, if so equipped.

[@bobbyheffley4955]

The 1960 Valiant had an alternator

[@selfdo]

@@bobbyheffley4955 Note at 2:38 the still clearly identifies a GENERATOR. Of course, this is obviously a prototype engine, as Mopar had been working on the new G and RG engines since 1957, so naturally a generator would be shown at the time. I was under the impression that the alternators we all knew didn't come in until '61 for all vehicles, but if you say the '60 Valiant came with an alternator, I believe you.

[@michaelbenardo5695]

@@bobbyheffley4955 But the 1960 Plymouth still had a generator, at least optionally.

[@gieco32]

Thank you so much definitely helps a lot to know about my motor

[@wil7228]

The best 6 ever made better than any BMW !

[@prevost8686]

The Leaning Tower of Power was a great design but suffered from poor quality control by Chrysler. Some engines ran forever with no problems while others had valve seats falling out of place and others burnt huge amounts of oil.

[@HamptonBallance]

It looks like one person did not appreciate the overall engineering of an old 225. that's a shame.

[@jacquespoirier9071]

probably the best 6 cyl engine built for norts american cars, bullet proof and very versatile.

[@skylinefever]

Well, I suppose the Ford 300 and AMC 258 might have been better inline sixes.

[@jameswagoner3309]

Not at the drags they weren't... I've seen slant sixes that turn elevens all day, I have never seen any AMC or Ford's do that.

[@philjerome9795]

My buddy inherited a 61 Valiant slant six back around 1980. First car I ever tuned up.

[@b4roni1]

great clip, so helpful

[@flufanga]

Weertman, his mentors, and his colleagues - geniuses.

[@skylinefever]

That intake manifold is far better than what was on most American inline 6 engines, just like these people say it does. It does a much better job of ensuring the the air fuel mixture between cylinder #3 and #4 is much closer to #1 and #6. During the 80s, some cars were built with a V6 and throttle body fuel injection because it was cheaper than an inline 6 with multi port injection. Chevy built the 4.3, a 350 with 2 cylinders cut off. Dodge built the 3.9, a 318 with 2 cylinders cut off. They also made brand new 60 degree V6 engine designs. Jeep and Ford continued to use inline 6 engines, but used multi port injection to solve the air/fuel distribution problem. Some speed parts companies were able to do better by having 2 carbs, each one connected to 3 cylinders. Also, some foreign car companies built inline 6 engines with multiple carbs, but I don't know if any of them were doing that back in 1959. Also, since foreign cars weren't common in the USA back in 1959, I don't even know if anybody even noticed those cars. 11:30 That is an excellent feature which was uncommon back then. Later engine designs would feature oil spray jets that were aimed directly at the pistons. It is said to be one reason why the Nissan 300ZX could handle large increases in boost. 14:30 I have heard people would have to re-torque early gasket designs, that is why this torque specification was mentioned. I think it was required after 1000 miles after the gasket is installed.

[@michaelbenardo5695]

The aluminum version required periodic re torquing.

[@michaelbenardo5695]

Many foreign 6s had more than one carb, but those engines were just too small for American cars. Not enough torque.

[@davesnothereman699]

Thank you!

[@UQRXD]

I knew a person who had the slant 6 engine in a Dart many, many ,years ago. I recall the valves had to be adjusted from time to time.

[@justenough730]

A valiant with 225 would run circles around a Ford falcon 6cyl.or a Chevy 2 six cyl.

[@craigwilkin7286]

I am 67. While I was building my 67 GTX 440 4 speed race car in my early 20's, I bought myself a 66 Valiant with a 225 slant 6 for $100 for basic transportation. That car was my Christine. It was indestructible. I would drive it until it got a couple quarts low on oil and the valve train would get too noisy, so I would add one quart and keep driving. I never changed the oil. One day I noticed that it had lost power, so I removed the clogged air filter and reinstalled just the air cleaner housing and never ran an air filter in it again. A full sized car T-boned the little red Valiant one day, the insurance adjuster totalled it for $200 and sold it back to me for $100. I put a piece of cardboard in the window and kept driving it. I sold it for $100 a year later. The car required zero service and paid me to drive it for 3 years. The car loved me and was indestructible. It was my Christine and I miss her.....

[@randallgrenier3582]

That's the stuff I love to hear. I would love to hear about how you bout the 440. Have you ever drove a 426?

[@michaelbenardo5695]

Too bad you were so cruel to her.

[@davsaltego]

I had two cars with that indestructible engine

[@williamg2552]

Australia got one Mopar engine we DIDN'T... THE HEMI-6 !!! with up to *300 HORSEPOWER!!* en.wikipedia.org/wiki/Chrysler_Hemi-6_Engine

[@timpriddy349]

We sold Australia a beefier design......215 , 245 and 265 that was a badass in a Chrysler charger and valiant pacer

[@42lookc]

I wonder if they even had a clue what a runaway winner they really had on their hands at that time.

[@electrolytics]

I took my 69 Dart around the block without oil to prove how tough it was. It lasted another month or so.

[@randallgrenier3582]

Did you really?

[@glennstiller7616]

Probably one of the most reliable engines ma Mopar ever built.

[@prevost8686]

You’re probably correct.

[@mattmc8391]

Hell of a tough engine . And I'm not a Mopar fan , At my first job , I use to thrash the hell out of 16 year old d150 with the slant six , I was impressed with it .... Even though it was slow as hell .

[@terryking1274]

I just finish reading an article about FCA secretly working on a new slant six to replace it's current line of V6 engines.

[@jondickson75]

Terry King do you have the article?

[@randallgrenier3582]

Wow really

[@michaelbenardo5695]

You sure?

[@joshuamarucha4993]

wow that power is not bad.

[@PhilHewkin]

the leaning tower of power

[@latexsolarbeef4990]

..my 6 cyl. 86' bmw 528e m20 motor..although EFI..has quite a resemblance to the 225 I have in a 66' Dodge A100..

[@kamikazecosmonaut]

Back when car commercials actually made sense.

[@coursonfamily1981]

Just found a bunch of these film strips and vinyls buried but in good condition does anyone know how much they might be worth?

[@AryDontSurf]

Probably a good bit to the right buyer, just like everything Mopar.

[@chrislemaster2695]

That 225 Slant six I had one in a 1983 Dodge Diplomat it was the leaning tower of power and toque and good on gas. My friend brought the car off me for 500.00. These Slant 6 are hard to blow up. We drove this out of antifreeze and oil for 10 minutes it was hot let it cool down and put antifreeze and oil in it still ran great. SO we used to say 225 slant 6 oil and antifreeze optional.

[@DrewLSsix]

I’m a service tech at a Mitsubishi dealer, as a point of comparison.... in my shop you gotta use the scanner during a service. To set it up you have to select some of the features the car has. In my world “keyless” means the car/truck has a key, “smart key” means there is no key.... we have come so far compared to the 60s man!

[@edclinton2884]

For 60 ' s and 70 ' s American cars , my " scanner " is between my ears , basic vehicles , not tons of unnecessary plastic electronic garbage on them like 1990 and newer !!!!!!!!!!!!

[@michaelbenardo5695]

Can't stand those Japanese-style keys. They are too damn big. You need separate key chains for each car.

[@michaelbenardo5695]

@@edclinton2884 AMEN, AMEN, AMEN!

[@warrenbuchanan8602]

did you know there was two or three larger sizes of the slant six than the 225 , they werent used in the cars or pickups but were used in the medium trucks like the D400 D500 and D600 . a long time ago i looked at a D400 about a 1966 , and the plate on the door jamb said it was 270 some cubic inches , i can't remember exactly . and i read somewhere a long time ago that there are to or three larger ones than the 225

[@sking2173]

Never heard of that. There was a 273 CI version of the LA engine family that was used in trucks from that era ...

[@josephjames259]

Just sold a 68 Fury 383 car and bought a 65 Dart with a 225 slant six. It’s a better daily driver than the Plymouth was.

[@troycollins7778]

This one dude on here sounds like Oscar the grouch.

[@dannymostarac1799]

😊❤😊

[@TimNelson]

Denver Pyle voiceover

[@barneywarwick1038]

is the 318 a Good motor

[@AryDontSurf]

Hell yes!

[@bigsid54]

Crazy good...

[@soaringvulture]

The original version with polyspheric combustion chambers was as durable as the slant 6. Later on they simplified the engine and it was ordinary.

[@edclinton2884]

Both the '66 and older 318 ( poly. ) " wide block " AND the '67 and newer 318 ( LA ) " small block " are great engines . my '68 Fury with a 400 horsepower 318 wasn't " ordinary " Bill Schiffsky built the engine and trans. in the early 70's .

[@michaelbenardo5695]

Yes, especially the original Polyspheric version.

[@markmeans9258]

Checking rocker shaft & manifold bolt torque check? Doesn't speak highly of Mopar engine assembly of that period.

[@skylinefever]

I don't know why the rockers need to be retorqued. However, I do understand why intake manifold gaskets needed to be retorqued. Sometimes they would crush a little more after 1000 miles before settling into their final shape.

[@emanuelnamseth1469]

That's 3.7 liters of torque. I'd like to see the comparison to the 225 gmc inline 6 , and the buick 231 by. And the ford 230 inline 6.

[@bobbyheffley4955]

The 230 was a Chevy motor. The 240 and 300 were Ford products.

[@michaelbenardo5695]

The 60s version was the best 6 for it's size, but it was a shame that they never offered a larger version, as the 70s really choked the heck out of it. A 250 or 260 version would have been super.

[@skylinefever]

The slant 6 intake manifold was far better at fuel/air distribution than the ones found on other inlines. Also, the slant 6 cylinder head may have been better than some others, it is best to have one intake port and one exhaust port per cylinder, but some of those other inlines didn't have it. Was the Buick 231 an early V6? If so, it avoided the fuel distribution problem, but controlling vibration was a different problem.

[@michaelbenardo5695]

@@skylinefever Yes, it was much better that way. The early Buick V6 was a 90 degree V6, the bad kind, with only three crank throws. It shook like a paint mixer. Later, it was reworked with a proper six throw crank shaft. It was a far nicer engine as a result, and lived on to become one of the best GM engines ever.

[@AryDontSurf]

I was so confused the first time I saw a slant 6. Really does look odd if you're not used to it

[@pinkfrank]

Anyone else notice the exhaust manifold is the exact shape as the mopar m?

[@rontreen3278]

Yeah and the oil pump cover looks like a Chrysler pentastar

[@jessesan2003]

Best motor built they do smoke later

[@novaman3509]

Jesse Sanchez 318 is a strong contender. Actually, I'd say it beats the slant six out. More power, more torque, and it'll last 300,000-400,000 miles.

[@billcat1840]

When 145hp got folks excited 😂... terribly undersquare tho..3.4x4.125.

[@michaelbenardo5695]

That's why it has good torque. With traffic today, top end is useless, as is Cruise Control.

[@michaelbenardo5695]

That was the 60s version. The 70s version sunk to as low as 90 horsepower.

[@dginia]

I had 3 cars with Slant Sixes - '62 Dart, '73 Duster, '76 Aspen wagon. I do not consider any of them to have been fuel mizers. I disliked the carburation - EFI would have been so much better. They were reliable.

[@edclinton2884]

I always rebuilt the carb regardless of make , carter and holley 1v ' s are very simple .

[@michaelbenardo5695]

The object was, until the 90s, simplicity and ease of repair at home with common had tools. You can't do that with EFI.

[@skylinefever]

@@michaelbenardo5695 Many people don't know what to do with carbs, but they know what to do with simple EFI systems. I think of the late 80s and early 90s Toyotas that are still on the road because the EFI was usually reliable, and a blink code was usually enough. Some of the more complicated EFI engines made by certain companies are a huge nightmare. I think about the stuff Benz makes, and what a nightmare it can be.

[@brokejokeratv5851]

I love old mopar till I see the slant 6 it's such a handicapped motor with no real aftermarket availability rip it out slap in a 318 and already way ahead of the slant six with mods

[@michaelbenardo5695]

But the Slant 6 is the longest lasting. Not everybody is looking for a hot rod.

[@MsJinkerson]

5 8 inch socket for spark plus

[@jacquespoirier9071]

13/16 for all engines equipped with N type spark plugs,, 5/8 for the later engines equipped with RBL type spark plugs

[@pl5624]

Different tech voice...

[@mschiffel1]

A little corny and hokey sounding, but this early video is how they made them back in the day...All auto manufacturers are guilty of this with their advertising and technical movies.

[@Thomas63r2]

This training film was pretty demeaning to the techs - the way it portrayed techs as rough talking and slightly coarse.

[@Wayneman48]

Worst engine design on the planet. Melt it for scrap (crap). When I bought my 1973 Duster it should have come with six spare carbs in the trunk for the next two years.You would need every one to keep it running.💩

[@chrisj197438]

Wayne R A bad carb doesn’t mean the engine is a bad design

[@4thstooge75]

The carbs in the 70's were made to run lean and a lot of problems occured. The engines were solid and ran for years with minimal maintenance. Compared to other engines of the day they were one of the best.

[@skylinefever]

During the 1970s, many great engine designs performed poorly because the smog devices really sucked back then. You had a tangle of vacuum hoses and if even one failed, the car ran awful.

[@prevost8686]

4thstooge That’s true. A mechanic worth his salt could fatten the mixture up and they’d purr like a kitten. Toyota carbs were famous for running too lean back in the day. We drilled the mixture plugs out and richened the mixture to make them idle better.

[@sking2173]

The ticket was to install a factory-new old-style Holley (with the front-mounted float bowl). The stock 1-V carb on the later slant-6’s was so crappy that Holley started manufacturing the old-style carb in bulk. They were cheap. Later yet, the slant-6 came equipped with Carter 2-V carbs that worked fairly well ...

[@Flies2FLL]

This engine is a heavy pile of shit from the 1950's~

[@michaelbenardo5695]

But it is DURABLE AND LONG LASTING. Most of us consider that more important than feather-light weight.