Doing a dyno after each part installed "separately" to see the gains is much more intriguing than doing one pull and then swapping HCI all at once. More videos should be done this way,its more "real world" since allot of enthusiasts mod their vehicles in stages.

Those old 300ci inline 6s were bulletproof.

Coming from someone who has owned several 4.9s, those things would pull whatever you put behind em, and you couldn't kill em!

Definitely one of the best engines Ford ever designed and built.

I'm liking the inline 6 builds. Keep them coming.

Pat's childlike wonder at this engine gives me hope for humanity

Finally people are starting to showoff all the perks of the ford 300 inline 6. The cummins of gas motors... Also inspired cummins 12 valve.

I learned to drive in my grandpas 88 F150 with a manual trans. Had the 4.9L 300ci in it. He gave it to me when he replaced it with a newer pickup. I was young, teenager, 14 or 15. It was running rough and I vividly remember looking around under the hood in our East Texas field in the summer, wind blowing the leaves like crazy through the trees that had been there long before us, fresh air. That truck was special. Wish it was still around. A shame a lot of people don't get our obsession....man and machine. All I can say.

I find this more interesting than another small block anything.

legend has it dude is still jamming pens and skrewdrivers into that pocket

Years ago back in the early 90's. The drag strip I often went to, a guy had an inline 6 cylinder in a short dragster, like a slingshot. The way it ran, you would of thought it was a V8, until you heard it. It was fast. We went to the pits and got a closer look at it.

I love those inline sixes. Naturally balanced by design with the ability to run smooth as silk. I've got the 4.9 liter/300cu.in. inline six in my 93 F-150 with the M5OD 5 speed manual behind it. This is the factory fuel injected version with the old OBD 1 management system. OBD 2 didn't get installed on this engine until 1996, the last year Ford offered the engine in it's pickup line. I've done a few mods by adding a K&N air induction kit, an MSD-6A spark box with an MSD high output coil. I made a custom set of ignition wires by using MSD's 8mm low resistance wire wound ignition wire and wire terminals. I looked for a pre-made set, but it appears that no wire sets of this caliber are available. FlowMaster's single outlet muffler and pipe kit finishes off my daily driver. These few mods have given the old truck what I feel is a seat of the pants increase in power. Let's say a few horses above the factory 175 HP rating and a sound out of the back that tends to turn some heads. The FlowMaster system gives the old six a nostalgic sound similar to that of an old Jaguar XKE... at least to me. While what I have isn't a sleeper, it's still fun as hell to drive with the manual transmission. Unfortunately the factory fuel injection system doesn't allow me to get too radical, so I can't use a more aggressive camshaft, at least for now. There's one thing that I know for sure, though, this engine will outlast the truck itself. It can be said, that this engine is definitely one of Ford's better ideas.

Can't wait to see more of this 300!!!

I've got such a soft spot for these motors... so many good memories, mine was the most reliable thing I've ever had

I built a 300 in line six in 1976 to go in my 61 falcon dirt short track car. It would blow some of the V8 engines on the track away. That engine made a ton of torque. I wish I had a list of the things I did to it. I was 17 years old at the time. Thanks for pushing my way back button.

When you changed the old points distributor to the new High Energy GM unit capable of 60,000 volts, you didn't change the plugs to accommodate the higher voltage spark. We've gained HP with a change to E3 diamond fire plugs, and even more HP with the addition of an MSD 6 ignition box that fires the plugs 20 times per revolution up to 3,000 rpm. More complete fuel burn to utilize the power from every drop of fuel. The emissions dropped drastically as well since there was very minimal excess unburnt fuel in the exhaust.

Starts up after looking like that and sitting for that long, because that’s what 300s do! Easily top 5 favorite ford engines of all time

Almost doubling horsepower and torque, without tearing anything apart. Definitely looking forward to more of this build

The issues with the 300s was ability to flow. The heads weren't made for flowing well, and if you fixed that, they made power even with no turbo

absolutely love this 300 series. I am currently redoing my dads old f250 that had a 460 and I am changing it out for a 300. Hoping to get 200 horse an 300 torque.This series gives me lots of hope!

6:45 that's why you use an old pad to help compress the piston

Anyone else amazed at how much he fits in his pocket?

One of my favorite all time engines. Extremely reliable with a long stroke for lots of torque.

This inline 6 build is where it's at! More content like this please. Ps. Thanks for not including the monster truck announcer.

I love the Ford inline 6! One of the best engines ever, Id love this combo in a old square f150!!!

That could be the biggest NA percentage gain in power they’ve ever done.

Hands down 1965-96 ford inline six is the best engine for durability, simplicity and reliability! Hey and standing in the engine bay while changing plugs is the icing on the cake.

Fabulous step by step build with easy to follow progression. Loved the power gains after each step. I think most people would have loved this Engine in their truck with that last build alone.

Finally a good engine

When are you guys gonna post the rest of the 300 motor build!?

I've been watching this "channel" since it began when I was a teenager back in the 90's. Still think I'm that same teenager sometimes, until the next morning when I can't move lol. But, love watching you guys still. Thanks, for the many years of entertainment guys!

I had a '69 Econoline with the 240 version of this engine. At the time (1978) the only performance improvements I could find were a set of Doug Thorley StreetTubes. Picture 2X3 Dual Exhaust. That SOUND when you let off the gas was the highlight of the experience. This brought it back in Vivid Color!!! I used to purposely let up in Tunnels...

It's a perfect off road engine, having all that tq just off Idle is great for any truck or bronco!!

I love the incremental testing. THIS is how much a header is worth - THIS comes from adding a decent intake...the ignition was a surprise. Points should have been able to handle that rpm and load. The original must have been completely shot. BTW if anyone is looking for one that hasn't had the balls beat off it, check out the mid '80s Ford econo-stationwagons. They actually had these jammed into that little engine bay.

Power Nation , please continue with this project. .

Ill take all the 300 big six content you can give me. Go whole hog on this one guys.

Chevy, Ford, and Chrysler all made fantastic inline 6's!

Back In my drag strip days, 50s- 60s there were teams that built GMC 6 cylinder bus and truck engines. A lot of teams were working on flat head V-8 s. The Jimmeys were powerful and you couldn't break them.

I’m original owner of 1979 Econoline 100 with 300 cubes and manual four speed on floor. Yup, that’s what I ordered. Currently has about 280k miles. When the exhaust manifold started whistling I called Clifford. Got triY headers and 4 bbl intake. Runs great !! Never pulled the valve cover yet !! Never seen another like her !! Treated her to a Maaco paint job last summer. Good for another 40yrs. That’s my baby...

I love the 300 six. Still run them on my farm. What really restricts these engines is the heads. Open up the intake and exhaust ports.

I just happened upon this and found it extremely interesting in that many years ago, about 45 to be near exact, I had been a long-time fan (and owner) of Toyota LandCruisers. My first new one was in 1966 and subsequently owned 6 or 7 of them, always using them to their limits off-roading and racing in the Pacific Northwest with the Columbia Roadrunners (loosely called "jeep") Club (mostly Jeeps, a Scout, a few Broncos, Chevy Blazers, etc. Early on I had my dealer replace the engine on my second new one with a new Buick 401 cu in V8 , only the second conversion in the entire NW (I heard that a guy in Seattle had put a 389 Pontiac in his being the first conversion) soon after chevy v8 conversions of all types were showing up everywhere. My machine then was quite impressive with other upgrades and huge (for the time) Implement tires for sand use. Later with another new rig (I lost count of the sequence number) I came across what I thought to be a HP 396 Chev motor, tore it down for rebuild to find it a HP 427 ... but due to some problems when first ran in the rig it galled some cam/lifter surfaces due to incompatible materials used by the builder. About then a friend in the club working as a mechanic at the Chev Dealership found that GM had just released their first Big Block HP "Crate" motors to the public, a couple of us jumped right on that deal. His in a Chev Suburban and mine replacing the 427 ... these were LS6 454 450HP engines, the first and last of the "MuscleCar" reign ... making a long story shorter (as I am just reliving my youth, I am 80 now, and know you readers are not at all interested) ... eventually I "outgrew" the racing to that degree (100yd Sand Drags) and just recreated stock engine rigs ... always marveling at the great torque performance of such a small engine (135HP) ... wanting to upgrade to a 292 Chev 6 cyl, preferably the Ford 300 cu in ... well modified of course ... but never got around to it. ... so after so many years of not even thinking about it all, along came this here article ... wow! Had I ever known then what could have been I sure would have done it!

In 1979 I bought a brand new Ford Econoline with this engine, with 4 on the floor. Loved it.

The 6-300 was my first rebuild with my father. He said if you can build it you can get a car. Smart guy got a free labor rebuild and never had to help me fix all the junkers i drove.

When compressing the caliper pistons, do it before you remove them, using the old brake pads to keep everything square. That's the way I've always done it.

One of my favorite builds of all time! Yeah we all love a 800 HP V8, but these 300 Fords are absolutely amazing! Probably the most durable and reliable gas engine ever made! Hope we get more builds of interesting engines like these, the Chrysler slant 6, etc Would love to see you guys build an old IDI 7.3 diesel (especially one of the rare factory turbo engines from 1993!) or even go big and bad with a 2 stroke Detroit!

I was a Ford parts guy starting in 1978, and ran at one point anything with wheels. The engines were incredible! Aside from lifter cover gaskets, they seemed to never need anything but normal maintenance stuff: filters, plugs,etc. They were, quite literally, bulletproof. And the industrial versions? Aside from draining all fluids, I can't imagine how you could kill one.

I did most of these upgrades to my first truck. 1982 F250. Yep you could get a straight 6 in a 3/4 ton back then. Headers, intake, 4 barrel Holly, hotter cam, and heavier valve springs. It woke the old girl up!

I love it. I can't wait to see more. This eingine is something I have worked with since I was 12 and I'm planning on putting one in my 77 f150 supercab.

Definitely my favorite build so far from you guys. Hope to see more on this!!! I've added basically the same mods to my 300 in my truck, and it really woke it up!

My Dad had this one in an Econoline van. It was the easiest oil change on the planet! The filter just hung on the side of the block with clearance at least 6 inches anywhere!

Anyone who loves cars and trucks knows the Ford 300 inline 6 is a workhorse. I didn't realize they made them all the way to 1996. Thanks.

Fantastic work! I really find the inline 6 build interesting. AND - great job doing runs after every upgrade. That's way more interesting than just doing all the mods and a dyno run.

😂 That why you use one of the old pads to press the pistons back into the caliper. What ding dong tried to press the pistons with the c clamp end?

I've a '78 Econoline, same engine, 3 on the tree. I just replaced the manifold gasket... 350k miles, still runs great... but yeah... it could use more torque and HP... and I'm sure mods would not affect this engine's integrity. A remarkable engine. I will have this van for the rest of my life. Parts are cheap, and available. I am very curious about Clifford Performance, who specializes in mods for straight six engines. Check em out.

He gets extra 10hp for every pen in that pocket protector. Lol. Good job guys keep em coming.

I love how this motor is being built and Dyno tested. Showing everything in incremental parts is very helpful for the common guy looking to build a motor like this. Build everything like this!

...Its your second most watched video in the past month...you should probably put out the next installment of this beast! :) ...please

Had one....spent it's whole life as a bakery delivery van....then I got it...ran it a year..split a trans cooler line. Swapped to a friend for a trailer, he fixed the line, pulled a 27ft camper with it and lived in it for a few years. Last I heard it's finally gone. Thing was a champ.

My first truck was a 81 ford f150 it had a 300 straight 6 that truck had a lot of power, i worked this truck so much, hauling hay, cut wood and deliver ricks of wood to several people each year around a 100 rick each year, i wish i still had this truck

You forgot marine applications. Thousands of these 300/6 where installed in boats.

Damn...almost doubled the horsepower by swapping out that pile of an intake manifold and carb. Now THAT'S a result!

In the 1970s I worked at a race engine building shop in Nashville and we built 2 300 Fords like no others, They both went into NHRA record holding cars. Both had cylinder heads that were made from 5 Ford Boss 302 heads that were sawed apart and then furnace brazed together in a fixture so they would bolt to the 300 block. Then they were what was called "high ported" where the exhaust side was milled off and a billet aluminum plate was bolted on. This allowed the exhaust gasses to exit at about a 45 degree angle. One of the engines had 3 Weber 2 barrels and the other had a fabricated Hilborn mechanical injection. Everything inside of these engines was the best with BRC pistions, Carillo rods, Solid roller cams and everything else.

I am sitting in my 1995 F150 with my 300 watching this. It's my spare truck and was my dad's first new truck and I'm thinking about "restoring" it this year. Just daydreaming a little. I love these engines.

I am "patiently" waiting for the final build and parts sheet, theres a sleepy '89 in the driveway thats ready to wake up.

Thanks! Really liked the step by step process of measuring between each modification. This is the first video of yours I have seen. I’ll be watching more!

I work at a truck shop. We do fabrication, not engine/drivetrain type work. I build flat decks, side-curtains, dumpers, install and repair rail gates and tuck-away hydraulic tailgates. We had a 5 ton Hino come in for a re&re; he wanted his 26’ box transferred to a new Isuzu cab and chassis. No problem. Did the job, guy drives away happy, leaves the old Hino behind for the scrap guy. This truck had a 411 cid inline six diesel with a 5 speed manual transmission. Watching your videos, I wish I had your skills… I would have absolutely loved to refresh that engine and tranny and put it in my ‘90 F250 ..

I loved my 78 f-150, That 300 would wheel all day and never let me down.

Gotta be honest, this is probably my favorite engine you've messed with.

To complete your collection, get y'all hands on a Ford Barra engine. Also that meaty ford6 jumped from 88hp to 166hp with JUST three bolt on's is what a lot of people do with their own cars before going big buck builds and you guys should keep presenting your builds like this. I would like to see you guys build up a Honda 1.8 to 2.4 four banger like this.

I bought a 1964 f100 from a gentleman in 1974. He had ordered it from ford in 64. That truck had a three on the tree and even after ten years of service I could break the tires lose in every gear, loved that truck.

I had a 77 f150 with the 300 straight 6,,pulled horses all over the southwestern states,what a great truck that was,foolishly sold it with 160,000 miles on it,was still running strong.

About 15 years ago, we ran our 300 over 40 miles pulling a 10,000lb load, after we overheated it and blew the radiator comin home from the Swamp Cabbage Festival. Thing was knockin and bangin around REALLY BAD the whole way. I watched the temp gauge go up and max out past the L, then drop down to nothing, like the truck was off. There was zero water in it. I had to hold it to the floor and could only sustain about 30 mph (thankfully there's no hills in southern Florida. I don't kno if it woulda climbed a hill tbh). We had a 351w to drop in it so really didn't care if it blew up. We we're tired and just wanted to get home if we could. Anyhow, got home, shut it off and came out the next morning and turned it over and it fired right up. Smooth as it could be. You never would've known what we did to it. Its still running and driving to this day. 94 1-ton, work truck. Its never broke down and left us stranded, ever. We always made it home. We blew a head gasket comin home from the Keys, but it still made it back to the yard, no problem. We ended up putting the 351 in a mud truck. Anyone reading this probably already knows what's up with a 300. Just figured i'd share my little torture story.

Great! I was hoping you would do some more with that 300. What a great motor. I love that Offy intake.

Maybe a camshafts upgrade could gain maybe 20% more in power.

Great video. I swapped on a Bosch mechanical injection from a Benz gas 6 with a welded up intake manifold. ( per Ak Miller) The pump needs more teeth on the rack, but WOW !!!! When you do the build, the 240 head has smaller chambers. Your industrial engine may have propane pistons ( 9 1/2 )

I had one of these 300s in an f150 when I first got my license. Great engine but I was young and dumb and thought I needed a V8. Traded the truck to a friend for a c10 with a 305. That was a lesson for me. 😢😢 13 years later the i6 was still running in a different vehicle and I bought it back. 17 years after buying it back I still have both engines. The i6 is in another pickup...the 305 block is the base of a table in the shop. 😂 The i6 is 42 years old, has been used and abused and is still running strong and smooth.

That thing has almost full torque from the bottom. It was definitely engineered to pull from a stop.

I'm very pleased to see an older inline build. This is something I've wanted to do for a long time myself. Your build was fun and educational adding improvements incrementally. Looking forward to more on this build, SUBSCRIBED!

I have the EFI version of this engine in my 1990 f150. These things are BULLET PROOF!!! I was raised a Chevy Guy, but to be honest I would have to say that the Ford 300 is even More Dependable then any of my 350 Chevy's have been! Most Impressive! Thank You!

We used to race nothing but 300's YEARS of race track life!!!

One of the cooler engines to build up. Great episode guys!

Wow. You can really tell this guy knows his stuff. Just look at all the stuff in his shirt pocket!! That's a pro for sure:)

I pulled a 1967 230 out of the junk yard, new points and coil, fresh gas, started right up, straight sixes are so cool.

the best thing is that street demons are inspired by the thermoquad so not only are you getting a huge jump in performance but it uses barely more fuel

I've long had a soft spot for the Ford 300. They seem to endure so much and just keep running. Like all straight 6 engines, they are very smooth running too. Great choices for farm trucks and other vehicles that spend more time working than commuting. I have to say I'm surprised to see the power gains that were achieved. I have to wonder what effect the increase has on durability and longevity.

The same goes for Chrysler’s Slant Six Engines!

My '86 F-150 4x2 has a 300 six which has never been cracked open. It has almost 300,000 miles on it and uses no oil and makes no smoke. That engine is world-famous for reliability.

I had one of these in a van.what a great engine.

There's something wrong with that engine. All Ford 300/6 engines are supposed to leak oil out of the side covers. It prevents rust of something.

Nearly a 5L gas i6?? Holy heck! And here i thought the Barra was a chunky boi!

This was FANTASTIC!

My '96 made 150hp stock. She's making over 300hp now! I love my 300! ❤️

Been 2 weeks i hope they are still working on this. More excited about this than the other projects.

Finally, I've literally got the same engine that had been rebuilt with a small cam, but they put that stock single barrel carb on it, I've got same intake and plan on using a Holley efi with it and the HD exhaust manifold, should be good for close to 300 ft lbs of tq just off idle

I had that engine in my 1982 F150 Custom and even without any upgrades it had insane torque! With the 4 speed manual, the 1st gear was a bull low, I could pop wheelies!

I bought a new 1983 F-150 and took it all over North America. After a few years I bought a Palameono slide in camper with a crank up roof system that gave it a six foot ceiling hieght. It was a HEAVY beast. But that 300 C.I. had the torque to keep it moving. I just let it take it's time, it went across the Blue Ridge Mountains. The manual transmission was a good match for the load. It ran great in Florida and another trip to Galveston Texas. It turned 100K on the road to Lake Nipagon Ontario. It continued on for another 100+ K .

Great video !!!! I'm a big fan of inline 6 cylinder s. I had a 292 straight 6 in my 68 chev C10 when I was a kid. Back then there was a company called Clifford Research - their moto 6=8. Same idea - let the engine breath. I'm excited to see what you guys do next. Keep up the great work !!! Cheers

When you turbo these things, they turn into diesel engines. Nuclear torque!

I had a 300 six in an 85 F150 I bought new. I was way more impressed with the 4 litre engine in the 88 Jeep Comanche I bought new in 87. It is the one I wish I would have kept.

Best engine ford ever built. Very reliable and plenty of smooth power.