I am a die hard FORD guy. Back in 1974 I had a 72 DART 340 4spd. It was by far one of the best street fighters I ever owned, it responded well to all upgrades no matter how small and was never scared of RPMs. You just have to love the 340!

I love seeing this motor on the dyno my Dad had 72 challenger 340

How I have waited for this little 340! One of my very favourite engines. Always loved how they sang like no other engine.

My buddy bought a brand new 1970 Plymouth Duster with the 340 and 4 speed. I’ve been luck to have experienced almost all Mopar engines, but none gave me that visceral experience like that 340 Duster. I believe a set of good headers will add at least 20 hp.

Best show on youtube

Nick, I ran this same combo in the 90's in my 70' Dart. TQ with a 2 inch spacer on an LD 340 intake, 'J' heads 2.02, 1.60 valves, stock exhaust manifolds, .040' over 346.2, and a 284/484/68 purple shaft cam with rhoades lifters. The car had enough vacuum for power brakes with the rhoades but not with stock lifters and had a nasty idle. I had a Carter Strip kit for the TQ and ran the largest jets and needle and seat with an electric fuel pump. I had a mopar electronic ignition and shifted the 727 at 6400 rpm with a 2800 stall and 3.91 gears. I scared a lot of buddies taking them for rides in it.

My cousin raced and built a 1970 Cuda around 1982. They ran the original 340, it had a lot of compression, a lot of cam, and I was a kid of all about 9 yrs old at the time. When that car fired up there was just a sound and feel like no other when the sound came out of those open headers. The ground shook, and it was right there I have been a Moparian for life. I did not understand engines at that age, when I finally discovered the monster that powered that car, I was always held in amazement.

Loved my 69 dart 340. I built it as recommended by Direct Connection which was Mopars performance parts division. They tested everything. If you followed their recommendations you couldn't go wrong. Headers, P4286630 cam with 474 lift and 284 duration, 235 at 50, and performer intake. Auto and 3.55 posi. This little monster kept even with my 1973 dart sport with a 440 on a roll on, but no match out of the hole. One thing I don't understand Nick is that you build a 1972 340 with 10.2 compression and then compare it to a low compression 340. At least compare it to a 1970 340.

So happy to see a 340 Dyno Test......thx Nick

Wow, that torque curve is so sharp. There's nothing left at the top. Probably a good choice for the cam for a weekend cruiser. 100 hp increase is nothing to sneeze at. That's a good running 340 for stock intake and exhaust.

The 340s might have been little, but they were mighty. Back in the day, I saw many a big block lose to these in the 1/4 mi. These little boogers could really Rev. 6500 was a breeze for em!

It's so nice to watch quality videos with no scripted drama like other channels

Nothing like a tire burning, ground pounding MoPar small block and NEVER any HEADERS Nick! Had a few of them in my day back in the early 70's! MoPar or no car! Bill from Linglestown Pennsylvania.

I like these dyno tests where you don't have other people sticking their noses in with their opinions!

You can richen the Thermoquad very easily Nick without opening it up. At 43:36 you can see on the secondary air door on the throttle cable side, a slot. That slot is there to bend that part of the secondary air door to limit its opening. It is in fact a tab. The tab actually allows more things to happen than just limiting the opening of the secondary air valve too. If you look at the secondary air door it has two humps in it - these are actually variable Venturis. By limiting the secondary air door opening, those humps create more Venturi vacuum at WOT in the secondary barrels causing greater discharge of fuel by generating a deeper depression at the fuel discharge bars. Some important adjustments: *The primary metering rods base adjustment - unscrew the T bar screw until the T-bar/piston assembly bottoms out, then screw 1.5 turns in to lift the rods. *Secondary air valve adjustment - hold the air valve wide open and bend that tab (I just told you about) so there is 12mm (use a drill bit) between the top edge of the air door and the airhorn. *the secondary air valve dashpot (the small vac cannister behind the choke), apply vacuum so it is fully retracted. The secondary air valve should be able to move 1mm. If it doesn't, bend the dashpot link rod, if it has more than 1mm bend the rod link so it has 1mm. This is an important adjustment as it starts the air moving past it. *Secondary air door tension, undo the lock ring, unscrew the door tension so it hangs, then slowly tighten until it just closes, THEN screw in 1.25 turns, hold it there and use another screwdriver to nip up the lock ring then a bigger one to properly tighten it. *These are just base adjustments* Also the accelerator pump is designed by Carter to squirt twice, once on the primaries and again when the secondary throttle valves (not air valve) open. To get it to do this requires a sequential adjustment procedure and this post would get even longer. Note, if the secondary air door opens fully it is often too lean possibly even on a stock 440. They're actually not supposed to be wide opened for correct operation (though they certainly can be when modded for max performance). Strip kits for these have been unavailable for many years. There are just so very many good things you can do to these to get them to perform. What I used to do was buy them whenever I saw them cheap and after awhile I had so many parts that I could make my own strip kit by sorting all the primary jets, rods, piston lift springs and secondary jets. A final word, the performance primary metering rods were tapered. The less performance ones are stepped. This is good to know since the jets at the bottom of the well where the stepped rods go in are possibly calibrated for ELB. This might not always be the case on just ELB either.

Nothing more enjoyable than watching Nick taking a screwdriver and making adjustments. Old school. And what a gentleman.

Nick, I've been a Mopar guy all my life, but I'm not your normal Big Block guy, I'm a 340 A body guy, the 340 for me is a lot more fun, (my brother stomped on the 302 mustangs real bad 1970) so I appreciate you doing a small block 340. Love to hear the thump at idle.

"6,000 RPM for less than $3,000." Ah, the good ol'days!

I built one 40 over, 1972 cirica. Did 10:5 to one, fairly good sized solid roller, air gap intake, 2.02 valves, edelbrock 650 carb. I don't remember the torque numbers, but at 6250 rpms, 422 hp. 36 degrees timing. Mine did have headers. Good video loved it, thermoquad, that I didn't put on, but did get a new Demon spread bore carb, to try. Hey nick that first edelbrock carb has a fully adjustable rear door, opening rate can be adjusted as well as how far door opens under full throttle. That would richen it some.

This is a 340 from 1972 and rebuilding engines like this is what Nick and his band of brothers do With a few adjustments they keep it factory true and muscle car engines they've conjured a few This one is going in a Charger and as full size cars go there ain't many larger It's not a big block but it's plenty loud This is an engine that would make any muscle car owner proud It's a V8 and it sounds great make no mistake When Nick's Garage builds an engine it takes a special talent to make it break Nick's Garage shows every detail it ain't no showbiz fake This is the true news A blue engine that won't give you the blues Put together with the correct bolts not a bunch of rusty screws The fuel comes from a carb not a rail Nick's Garage might sometimes falter But Nick's Garage never fail Thanks Nick George and all the boys and girls Muscling and tusselling Nick's Garage every Monday is just the thing

Really enjoyed the 340 run Nick! I had a 1969 Dart GTS 340 and built up a new engine back in 1980. I got a super deal on a new pair of W-2 Chrysler iron race type heads and ran the updated Street Hemi grind cam for the 340. Intake was one of 12 Edelbrock LD-340 dual plane that was cast to fit the new W-2 head for tests. Got it from Petty Racing when they had an old parts sale. Ran the engine with the ported to fit stock 1969 340 manifolds with 2.50 pipes. It ran very well with a 3.91 gear and Torqueflite with 2500 convertor. I sold the car in 1989 but should have kept it. I will send you a few pictures. Keep up the great work!

I've been waiting to see what numbers this 340 will make on the dyno. There's always something different on Nick's Garage on a Monday afternoon, the best channel on KZfaq. Let her rip!

In a perfect world I’d get a shot to build a 340 screamer for a 68 dart. What a cool setup!

It's so refreshing to watch Nick go through the process of dealing with numbers that are below his expectations and then chip away until he gets respectable power numbers. Sometimes the journey is more satisfying than the actual result!!!!

We had those manifolds on my Dad's 340, but I dont think we had those shield gaskets. Those manifolds are rare now.

That’s a strong running 340. In the early 80’s when I was racing my 70 Cuda, I picked up almost .8 in the 1/4 by bolting on a pair of 1 5/8 primary Blackjack headers. The factory manifold’s still hold it back quite a bit

Sounding sweet! I run my 340 engine in my '67 Cuda @ 34 degrees total, works great with my engine combination. It will rev out to around 7 grand reliably and makes good power doing it. Excellent tuning video, Nick, thank you!

That’s a very nice motor…strong and reliable. No downside to this build. Romp on it!! Nice job Nick! Thanks George for your perfection.

I had a totally stock 72 Charger Rally 340 with a 4-speed pistol grip. That was back in 1973. It would do 140mph flat out on the interstate. It would pull 3rd gear to 120mph! I also raced a Super Stock 340 Duster 71. They both liked 34 degrees total timing. That's the sweet spot for just about any 340.

If I remember correctly I think the 1970 340 3 X 2 barrel models had an aggressive cam that sounded lumpy with a real good lope. Of course they were under rated to hopefully keep the bureaucrats and the insurance companies happy, sorta.

Thermoquads make a wonderful sound when the secondaries open.

WOW💥 The Aluminum intake made the 340 a little Monster with a lot of help the master engine builder NICK......Thanks Nick & George the Super Camera🎥📸 man 👍👀 The one an only = Old Navy Flying Shoe🇺🇸

The volume and quality of work Nick completes out of this shop is amazing. I had a ‘72 Charger with this exact engine in the mid ‘80’s.

The factory rated the 1971 340 @ 275hp which was believed underrated. The NHRA rated the stock 340 at 330hp. The 340 is a great engine that was designed as a high performance engine, there were no pedestrian 340's unlike GM 350's etc.

I'm in a 5.7 challenger watching this through my car stereo and this 340 sounds extremely close to my actual car. I'm assuming similar bore

When I got out of high school I bought a "73" 340 Dart sport (It was a few years old) and that was one of the absolute most fun cars I have ever owned.

The first Elderbrock, "650" has the "sort of" choke plate over the secondaries, where the second carb does not. The "Thermoquads have one, and is adjustable. Also pretty easy to play with the metering rods. Yes, I'm a Thermoquad fan boy! Ha!

You could get your engines built by anyone...but Nick here is one of the few that strap the things to a proper engine dyno and wring out runs. Gets more power out of them and takes care of any issues along the way even those annoying little oil leaks that Nick absolutely hates as noticed in previous videos.

Great job Nick, I have been waiting for this moment and not disappointed. For you waiting on the 72 Charger Ralley 340 dyno, glad you liked it also, especially the torque and HP going up and at lower RPM's. Probably do some car shows but definitely I will be driving around and watching all the heads turn giving me the 👍👍. Not any others around this area get this attention, have seen other show cars passing through to get to car shows. Thanks again Nick, and you too George for the video documentary. Let Nico and the rest that I said HI.

that stock intake is pretty good considering the air gap only made 8 more horsepower

On a nice twisty hilly road I had rather have that 340. Yeah the power is down from a big block but so is the weight you have to slow down and carry through the curves. Makes for a happy ride.😊👍🏻

LOL at the "Elderbrock" logo.

Anyway, you look at it that’s a huge improvement for that 340 the 1970 was the best year

Love this test,have a 71 340 with a Thermoquad myself,and 70 hp exhaust manifolds.

Nick and George great show !!!! Love watching the 340 get it done ..I know I my be repeating on the this but the AVS , Looks and remind me of a Themoquad 4 barrel from days gone by . Nick ,you are one of the Best Master Mechanic's I ever seen , so vast knowledge in building and tuning . Hello to everyone!!!

Dr. Nick. there is a 1973 Duster in my Town that needs that 340, thanks for the show, and well done George, the video's keep getting better all the time, cheers.

Gained ten hp with a different intake. Id stay stock looking that was expensive hp. With lots of reading it seems to get the most out of that intake gotta go with headers. Id leave It all stock its a beutiful engine. Great job and over 1hp per cube its a streetable screamer. Excellent as always Nick. These lil engines love their rpms up there for sure.

The 340 loved high rpm straight away. It was the perfect match to A body and E body cars. Something about the thermoquad. It was a good carburator and the phenolic base kept the fuel cooler on hot days, no vapor lock like other carbs. I had one on a 1978 440 Dodge Magnum and it performed well. Nice video Nick.😁

Superb Monday , love the 72 charger 👌. Buddy of mine drove a 72 with a 340 pistol grip 4 speed back in 79. Never under estimate the 340 in that car. They pull hard.

you can do it nick, love the no nonsense channel

Summertime in Germany , 1 hour earlier Nicks Garage on my Desktop PC 😀

I used to have a 1969 dart gts with a 340. It was a mean little beast. I don't know what what kind of hp it was making but it could run high 12s-low 13s. I miss that car

Also need to mention that the torque range with the AirGap intake is flatter, 380 ft/lb from 3600 to 4800 rpm, rather than rising to a peak then dropping off and that's what you really need (in my opinion) to better utilize your horse power

Hey guys, great dyno video!! Indeed, the 340 is the little engine that could, and very often DID!! The final numbers with that aluminum intake do Indeed speak for themselves!! Great work, Nick!!

Bon Jour/ Good Day, Nice to see a small block again.

I believe with the air-fuel ratio straightened out the 650 Edelbrock would make the power numbers. I've seen enough dyno tests of hotter small blocks than this to know 650 cfm is plenty to support well over 350 horsepower.

I would like to see a show on that Trans am ! I'm a Pontiac 455 fan !

Wow Nick worth the wait and man that 340 did not disappoint either both in looks and the way it sounded thus real smooth at idle, no oil leaks and manifolds too. George your intro was a beaut and fitting for this video.

Old school. My 1968 318 Dodge Dart GT made 350 HP with a one barrel Rochester carb and a glass pack. How this 340 is only makin' 344 hp boggles the mind. I guess I would stomp em'.....

Read this on an old mopar A body only forum. Depends on how bad someone wants the extra hp. Seems heaxers are a pain on these due to steering shaft clearance. Andy wlheres a reply in the thread. The 340 I built for the 2010 Mopar Muscle Mag engine challenge made 39HP more going from a set of Hooker 1 5/8 headers to a 1 5/8- 1 3/4 header. And it was not all on the top end either, it made more power everywhere on the dyno pull from 3000-7500rpm. If you want power, ditch the stock manifolds and go with a header.

Best show on KZfaq, great numbers for the 340, the little keg of dynamite.

Hello Nick and all the crew.have to respect these 340 screamers.they always made me nervous👍

Ran the factory Thermoquad on my 72 Roadrunner. It was the best running carburetor until it (I think) warped the plastic body. Tired replacing it with an AFB then later a Holley, but always preferred the TQ.

Matching numbers are great if you have a show car! If you have a street car and you want power go with the right stuff!

Personally, I don't want to make the old cars a race car; I just want to see them run well for a long time. I love old simple technolgy.

Good job on this video. Those good old light 340s sure give the big block guys a hard time on the street back then. Those painted exhaust manifolds sure look good but I don't know how you can justify doing it when it only last a few minutes once the engine is running. Other than the work and cost of the paint, and then, the toxic fumes you're breathing when it burns...To each his own I guess.

In the “FAST” series they run factory exhaust manifolds but port them thin for more exhaust volume. Wonder what the difference in vastly ported manifolds and headers? Sounds like a great test session for Nick’s Garage 👍🏻

Nick is a genius.

I was impressed with the 330 Hp reading on the Dyno that motor sounds great

It is so nice to watch a master at his work always enjoyable Nick thank you.

I love the 340, thoseexhaust manifolds look good.

Hava a 70 340 stock bore & piston,469/494 crane cam with x heads,hp manifolds & LD 340 intake, 780 holley. Drive it like I stole it most of the time for 8 summers in my 70 cuda convertible 4 speed 3.55. Surprised alot passengers how it ran. Last winter I put aluminum mopar commando heads with mild porting & decked to get 10.7/1. TTI headers. And surprised myself with the difference in torque and topend. I find it pulls the hardest at 32°total timing with 16° in distributor. Maybe try retarding the timing a bit Nick and see what happens. I been mopar guy since I was young boy. When my grandfather would come to my parents in a big black dodge car that rattled the windows in house. Great channel and shop you have Nick.

1971 was the last year of the AVS, which the 1971 340's came with. In 1972, they started using the thermoquad. The AVS is a fantastic carb which is easily adjustable with a strip kit. I still have my strip kit I bought back in 1988.

hats off to all the people that make these videos look the way they do. nice job thank you.

I have those same exhaust manifolds on my 340. I love them. And the two manifolds being different give the engine a cool look.

That Mopar 340 ran like a 440. That's a good little motor. For me, it's more like 315hp and having 395 ft lbs of torque. Thatll be good in a 1975 Plymouth Duster

Thanks Nick, small block owner.Central California watching.

Hey George, you just keep getting better and better with your videos skills . Love it !!! We are wide open ride now with life and getting off on our check in s...Doing our Best . Best Muscle Car and Mopar Channel on KZfaq!!!! Big Wave to ya !!!!

I just discovered Nick's Garage. Nick, I really like what you are doing. I love the old 'simple' technology especially how well you get it working.

The best garage from ST-vincent de Paul! 👌

Sounds great! the 5.7 Hemi is 345 and it's a beast!

I had a 1972 'cuda with this engine in it, in front if a four speed. It was such a beast.

Great dyno video nice engine build 👍🏻🇺🇸

That was a tough build to get expected results out of, Nick. Maybe "HEADERS" would help on horse power along with the aluminium air intake. I know you hate header, Nick. "CHEERS!"

A true pleasure to watch a real, old skool horsepower mechanic work with an engine. So refreshing to see the knowledge is still there in today's world. Too many "kids" with no instincts, or no how, or ability to learn and listen to those that know, showing their ignorance and thinking they know it all. I just wish you weren't all the way up north in Canada, just a really long way from where I live. Keep up the awesome work, I subscribed, just from watching this one vid. I'll be watching a lot more vids.

Those Thermo Quads are the best wheel chocks ever😢😢😢...

Nothing sounds as good as a TQ!

Awesome run with the 340 you did a good job Nick keep them coming and see you Friday

Love the dyno room

That 340 looks nice..

Awesome stuff Nick!!! Always look forward to your vids

I had a hopped up 318 with a mild cam and 2.02 valved heads and that motor took everything the 750 Edelbrock carb would give it. He might want to think about getting himself one.

.30 over and a bigger cam for that 370 400hp mark

Great build you are only down10 or 15 HP with those manifolds . great job Nickn

Wiah you guys had a stock AMC 360 im curious what your HP/torque numbers would be.. we know its net hp in the vehicle.. but itd sweet to see a stock one... Not once have seen it. No one does AMC.. ever

great job how about some more t/quad tests please

I would love a whole show on the TQ. I remember being somewhat intimidated by them as a kid, on the 400. I have a build with a buddy's 340TQ I pulled that I would like to try.

I haven’t seen a rear main leak in any of the engines you assembled, that I can remember. Are you primarily using a rope seal?

There is a screw in the center of the Thermoquad for adjusting the A/F ratio at part to full throttle. No jets have to changed.

Nice 340 painted Ford blue, just like the factory !