Stock, Numbers Matching 340 Six Pack - 1970 1/2 Challenger Dyno Test 

I've always been a GM guy through-and-through...but who in their right state of mind couldn't love a 340 Six Pack? Great attention-to-detail, Nick! A hard-running piece of art!

I love watching how meticulous you are between tests, making sure everything is running optimally.

I had 1970 Cuda with a 340 Six Pack that put out 310 hp at 5,000 rpm so I guess we will see shortly. I loved that car. My ex totaled it. I bought the salvage rights to it but I never did anything with it so I sold it. My heart was broken...

It's not often you find a guy that goes the distance to make sure it's absolutely perfect. As a auto tech in Michigan I appreciate everything nick does. Keep up the perfect work thanks for sharing

A magician at work and incredible knowledge at what you do Nick, keep up the work . These moments are tough for all but what you and George do brings us some happiness every Monday Morning................Stay Safe

I HAVE LEARNED SO MUCH FROM NICK AND HIS CHANNEL, ITS AMAZING HOW MUCH KNOWLEDGE HE HAS. THANKS FOR SHARING NICK. CHEERS FROM ONTARIO CANADA

I've had two of the 340 six pack engines and one 440 six pack engine. Yes in the factory cars! My honest guess for the 340 + 6 was around 330s... Not far off. Being isolated out here in rural Southern Michigan , it's great to see a video for the 340 + 6. :-) thanks Nick and crew :-)

Stay safe Nick! Thanks for giving us something to break the boredom.

Thank for keeping the videos coming, gets my mind distracted from what's going on at this time for a few minutes, completely focused on what you're doing. Can't wait to see the keeper come back to life for a test drive. God bless us all.

Thanks for being around with videos during this time Nick! Your quality hasn’t even dropped in the slightest!

Thanks to Nick and George the camera man for keeping us all entertained while stuck at home . The package sound effects crack me up , great editing job George. Look forward to your next video.

I love the 340. I had one, although it was the lower compression 1973 version. Glad The Keeper found a home.

I love the 340 small block Mopar engine. Many years ago I drove a neighbors 69 Dart with a 340, 4 barrel, and 4 speed and I loved the way that car ran. Thank you for another great video Nick, I hope and pray everyone at Indy Auto and family and friends stay safe and sound during these scary times.

Nice work👍 I've owned 3 TAs all at the same time for years for which 2 of them are in museums now, pure stock all the way up to 500 HP. Not once did I ever have to mess with the carburetors. It is important to understand how to set them up properly from start.

I can’t get enough of that overhead view of the outer carbs opening! I was surprised how well they metered themselves and open nice and smooth as rpm increased.

I am really enjoying Nick and his wealth of knowledge! We need to value our craftsmen because the knowledge they possess is irreplaceable!

Love your videos, and really enjoy each and every one of them. Owned a72 Dodge Demon 340 black on black that I bought brand new and was a great car. It was the only Mopar I ever owned, otherwise was always a GM guy,although a lot of guys I ran around with back in the day were Mopar guys. A couple of them owned AAR Cudas,as well as Ridge Runners (lol) and if I could afford to, I'd probably buy one today, just couldn't say which one because there are so many that I like. Take care and be safe to you and your family and friends as well. 😎

These mopar small blocks kick!! 340 and 318 are lethal little gems of an engine...i grew up with a friend of mine who had a 318 built (cam, heads, etc.) in a 72 Satellite with original auto trans (or whatever trans in the car at that time) and stock rear-end and the car was just a little monster around town. Peace. Thanks for these vids.

Nick I wish you well bud through these crazy times on our planet . I’ve been watching your channel for a bit over a year . I have enjoyed every single one my friend . I hope to have an Opportunity to see your shop in person one day. Keep up the excellent videos , take care !

I've been binge watching Nick's Garage. Your videos put a big smile on my face.Thank you.

What a combination ! American engine , Italian Body and with a Greek Rod Great stuff Nick ! Stay safe ! from London

All natural aspirated engines is the way forward! Thank you for sharing your knowledge, we love your videos, your shop operations, especially trouble shooting techniques , and Dyno pulls, reminds of guys I learned from and work for, i miss the old days!

Nick: try to get down to DC sometime and visit the National Air and Space Museum on the Mall and out at Dulles Airport. You can also tour the restoration shop in Silver Spring, MD. I mention this because whenever the restorers need to make a part, like a strut perhaps, they engrave it as a reproduction so the next guy won’t think it’s original. You should mark your shift rod with “Nick’s Garage 2020”. My Mopar roots run deep. The first car I ever drove was my mother’s 1952 Dodge four door with the semi-automatic transmission. I got my license at 16 in 1961 in the family 1957 Chrysler New Yorker four door hardtop. I took the only behind the wheel driving test in my life in downtown Baltimore in mid-day traffic. The inspector had me parallel park that monster on the street too. “Just pull in there, Kid.” I think I impressed him, but with the fins out back with a radio antenna on each one, it was a snap. 392 first generation Hemi with 325 gross BHP of course. Later my older sister bought my grandparent’s 1952 Dodge business coupe. That one had a manual transmission with fluid drive not a torque converter. You could put it in third gear, let off the clutch, and the car would slowly accelerate with the engine at idle. Finally, I have a friend here in Annapolis who has an office in an industrial park. One side office, the other garage. I didn’t know about any of this when I first visited him. When I was about to leave he said “Look at this” and opened the door to the shop area. In there he had one of each Barracuda body style, a 1971 Duster drag car, and a Jensen. He’s getting on in years, but he still has the Jensen and one of the Barracudas.

Dr. Nick,years back my old friend had a Duster that had a 340 6 pack,thanx for all that you do for us in these strange time's,please be safe,cheers.

craziest engine ever put in a car! 340s were insanely fast for their displacement.

Nick you are a Treasure to the Muscle car world. Thank you for all the heart and soul you put into your work. Or is it Love? Bravo sir, bravo.

good morning Nick man i love the sound of smaller C I engines, keep safe thanks

Hi Nick from Lincoln Rhode Island. I want to tell you what a great relief it is to see you and your crew for 34:27 this time. In these troubled times you hang tough thank you for that!

I was a performance engine dyno operator at the Chrysler Tech Center from 1966 to 2007 and actually tested the 340 6 Pack along with all the other performance engines we developed. Back then we tested from 1200 rpm to 5600 rpm all 340 engines and we took readings every 400 rpm. We spent about 3 minutes at each speed taking all our readings manually by hand including F/A at every cylinder at every test point. Your numbers are pretty close to what we made back then. We ran the water pump off the the crank pulley. And by the way we were in the room with the engine running the tests. We put a wire cage around the engine to catch any parts if something broke. After 1970 the government set up safety standards to have the operators in separate room like they do now.

Makes me wish I could be out rebuilding the olds 307 I started. But with this virus going around I'm staying at home. Always like watching your dyno videos. Stay safe Nick

I really like the videos of these rarer classic muscle car engines. I prefer them in stock configuration just like they came off the factory line. It's like watching a living history of those years. I would be interested in seeing dyno runs of the high compression small blocks like the Chevy 327 L79 had solid came, and 11:1 compression. I know Ford had some of those also.

Love all your great videos Nick. My wife and I both own and drive 2013, 2014 Dodge Charger RTs, both AWD models. We also have a 2013 Chevy Camaro 2SS. We LOVE them! God Bless You and keep up the great work!

Hi, Nick. Great video. I love the multicultural nostalgia. Your "missing link" reference was funny. You mentioned the Pantera, let's not forget about Tim Horton, R.I.P. ....The 340 six pack is one of my favorite Mopars, nice weld on that bell housing. Hope the input shaft on your dyno was not damaged due to vibration of misaligned flywheel on the old hemi. Glad "The Keeper" found a good home. Love mail time, cool stickers. Stay Safe. 🤓

Service stations were fantastic places for teenagers to hang out and learn about cars. You’re so right, Nick, service stations have joined the chimney sweepers and dinosaurs. Keep up the good work and stay safe!

Nobody: Everybody scared out there from the virus Nick: testing a 340 like it's a normal day

Your knowledge and passion for old muscle is a great thing to watch Nick. Thanks for this during these odd times.

Sweet a Nick's Garage episode during this quarantine!

We were all Mopars till dad saw a 351c 71' mach1. But on the lot next to the mach 1 was a 70' 340 six pack Challenger T/A in drab green with the ram air hood. It was a hard decision but we got the mach 1. We are talking 1977. I had a buddy that had a 71' 340 Demon 👿 that ran 11.43 quarters consistently. I have alot of Respect for those 340s'. Thanks Nick for posting about 340.👍

It's different seeing Nick without the usual crowd in the dyno room. Weird times these days.

Hi Nick, I've been watching you on you tube every day. You have some great content. I enjoy watching and guessing the H.P. on your builds. Been a car guy for ever, had a 69-GTO W/400 small block, had a 72- W30 Hurst Olds w/ 455 Ram Air & a 4 speed M-22 Muncie. Put a set of headers & a set of cams. That sure made the car a handful, wife did not like, but I did. Thanks for the great past time. Be careful & be safe.

Stay safe nick i wish you and you're family the best threw these hard times

The second job I ever had was in a full service gas station,way back in the 80`s.Learned so much about cars.

Mopar 340: most underrated best small block ever made

Nick, I worked in a speed shop specializing in MoPars back from 1963-'69. We also worked on some GM products. When a Hemi rolled in it was awesome but I had a thing for Six-Packs like you. I always thought the 340 never got the love and adoration it deserved. Such a handsome engine too especially as a Six-Pack. I loved this dyno run and enjoy your channel so much. Like my old boss you have a special love and attention to detail with these great engines and cars. I surely miss those days that were interrupted by the US Navy! lol

"The missing link." Priceless!

Nick. Always enjoy your shows. My guess was 340 hp. Had and raced 340s in the 70's. These engines can rev past 5500 and will make more power at higher RPM with the right camshaft. Miss those days which is why I love your show. Brings back a lot of memories. MOPAR forever!

I would check the oil pressure relief spring. My 302 Mercury was blowing oil filters off when it jammed...

Well Nick. In these days of queuing just to get to the security to try to get in supermarket to try to buy food that is very rare now. I See Nick being Nick when i get home. VERY big thanks from Australia Nick.

Nick is probably the best boss you could ever have. Wish my boss was as cool.

They (the factory) say's they ran 290 HP. Everyone knew that it was probably around 350 or maybe 375. It don't matter, it's just nice to see one run. Thank You Nick for bringing this to us. Ronnie.

stay safe NIck ! always liked the 340 ! and cant wait to see the keeper drive in a car... im from California and grew up on See's ...that stuff is better that any drugs... carful with it LOL

Nick i love watching nicks tricks cause reminds me of my dad he thought me all the same tricks every time i see one of ur tricks i already know them but remind me of my dad thanks nick ur true old-school

When I was a young teenager, my sister's boyfriend took me for a spin in his new 340 Demon. Scary fast.

Thanks Nick, you’ve got an awesome operation. It’s interesting that the factory numbers were posted @ 5000 rpm. Motor was capable of sooo much more.

Factories back in the 60's and 70's always sown played the amount of home a engine made for insurance purpose

I too love your videos, enthusiasm and the view from above of the carbs in action. Keep up the good work. Oh yeah, I love the naturally aspirated engines as well.

P.S. I love that sinister laugh Nick gets when he opens a package of coffee. :-) -Ed

May the great team at Nick's Garage be safe and healthy. The videos bright up my day and the funny sports are priceless... CANDY... you got me to laugh out loud that my wife thought I went nuts. Yiassou!

I just pulled one of those transmissions out of a IR carbed 1967 Shelby GT350 I'm working on, interesting

I love your coverage of so many engines i developed. I often think of visiting your shop but i I'm staying in lock down now.

I am slightly surprised that the motor put out that much power in its almost bone-stock tune. No wonder the 340's ran so well back in the day.

I was guessing 325 because thats what my 340 six pac had with a racer brown solid lifter cam.

Your the KING! All Hail King NICK!!! I look forward to the day I can bring my engine to Nick's Garage.

I had a T/A Challenger and of course wish I had hung on to it. I would love to see you do a comparison between a stk Six Pack manifold and one that has been extrude honed. Reason being I have seen dyno result that showed the Six Pack wasn't really as good as it could have been when comparing to single 4 and duel 4 manifolds.

l had guessed it would make 325 HP at bored over....Shuck's Nick you got the best Car...Stuff on youtube..By far...George has made all of this come true.....For us to watch....l hope you know that....Love you''all.....Super car stuff...God Bless truly...Thanks very much indeed...!

I'm pretty old school but that seams to still have a carb ballance issue. You can get the air fuel right on those but still have a carb ballance issue. If the 2 outside carbs are running rich and the center carb is running lean you would still get the O2 sensor reading correct. I think there is still some left in that six pack.. Just my observation for what it's worth.

small block mopar! LOOOVE the sound of mopars more than any other brands!! Thanks for sharing this Nick!!

The Frankenhousing! It's Alive!

Thank you for the video hommie You bring a smile to my Monday 340 looks clean Nothing like original look! Keep safe and thank you once again!!!! Nicks Garage number one all day every day 👍🏽🇺🇸🇲🇽and 🇨🇦 keep building that great American muscle 🤟🏽

Nick, that was really cute about the Greek rod!!! I have a question about the 340 six pack. I noticed when the throttles opened on the secondary carbs, that's when the hesitation occurred. Now why doesn't the secondaries have accelerator pumps??? Could this problem occur in the field or just on the dyno???!!!

Excellent test. Enjoy all of your work. Suspected back then the 340 6 Pack was underrated and you proved it. Thank you for the information and entertainment.

Dyno Room = Perfect "Social Distancing" spot.

Thank You for all of the great videos Nick ! It’s just about as interesting and knowledgeable as it can get !!!

My favorite small block mopar. 335 hp guessing

"W'ell take it from there" love it when you say that Nick. It symbolizes taking things one step at a time, a great trait to practice at work and especially life itself. What an awesome channel guys! Great job producer man! Another Top Notch product from the guys at NICKS GARAGE!!

Good power but it's only half the story, the 6pack smooth cruise motor.

Thanks Nick and Team for Keeping us entertained, Uncle Tony's Garage brought me Here.. daily driver 1968 Dodge Dart everyday and Everywhere..

Damn the oil pressure is good over 100 PSI at 5300 RPM LOL!!

We are with you in Spirit Nick.. We all are practicing social distancing. Great Video...

Buddy you got so excited opening up the chocolate! You know me with chocolate ah

Of course ! We love you Nick. Stay safe

I would like to see a video on that dart

Hi Nick and Nick’s Troupes, I hope all you guys are healthy and safe. I was just thinking about a video I would like to see you make. I am curious about the functioning of the 3 carburetors in a 6-Pack and in duel quads. I am interested in which carb controls the choke, the idle, and how the power gets introduced through them. Thank you ALL for the time and effort you put in to the making of all the videos you produce. I look for them first when I get on You Tube. And right now the entertainment you provide to so many people, is worth so much more than you can imagine. Thank you so much!

I always thought the engines of that time period were always under rated by the manufacturer for some reason.

Nick is what I need in these times.....thank you

325 HP would be my guess on the 340 refresh.

Good Morning Nick! Locked down in Seattle. Enjoy your channel, better than anything on TV! I do not have a muscle car but I am restoring a '47 Willys Jeep....

Maybe you can give light on the 340? The rumor was when I was a teen that the 340 was a bored out hopped up 318. Is this true? I know I 1/4 mile several Demons with a 1970 Road Runner I had. The 340 was not to be taken lightly.

475 wow i was way off! And as I always say it's always a good time here you put on a great show I miss seeing Vasily on scene. The boy that was nice to see how those carburetors worked in sync. The ones that work for you and are around you are very fortunate to learn the awesome tricks of the trade I mean you build some awesome engines and beautiful cars. Always a good time here always. You got some lucky workers that get to learn from you. I would have paid a fortune back in the day just to be taught by you. As always great show can't wait till the next one.

Pretty stong for a small block

thanks Nick we really need something good to take our mind off of whats going on! ya'll stay safe and GOD BLESS

Mopar -----massively over powered and respected !!!!!!!

I had one of these 340 6 packs in my 1970 AAR Cuda with a pistol grip 4 speed. It was packing a Crane Fireball 650 solid flat tap cam and Accel Ign. with 8mm solid copper wires to the plugs. Car was Plumb Crazy Purple - beast on the track-road coarse. Wish that I had it back.

Ahhh it's got a Greek rod 🤣🤣🤣😜🙊

You just got to love Nick. He's the man

I think the 3 deuces is too much for a little 340, a single 4 barrel probably put up a little more power but it's just not going to look as good as the 3x2's on a Challenger.

Please don't let Discovery and all them other channels come around and try to sign you into a show for them. We really enjoyed you here on RU-vid it's such a blessing for us and we appreciate you!

You get too many more flags you're going to have to buy bigger shop

Man, that 6 pack didn't bog down as bad as first loaded i thought it would. Nick,I had a friend in high school (73-75) that he put a 340 6 pack in a 71 Plymouth road runner back then! MAN, that thing could REV in such an heavy car damn!

An engine that just shouts 'Where's the other carb!' one missing! Seriously though, what an engine and as always Nick is your man to build/tune it.