Sorry, lol on the street stop light to stop light the 383 won. Left them small blocks like they were standing still.
340 A body versus 383 B body
- Thread starter justinp61
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lol What's it all matter! 90 seconds to midnight.
roccodart440
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A lot of people forget how hard it is to run a 14.
I remember being at the track and a friend came down with his SRT neon stage 3.
He asked if I thought his car would run the 10's. I said yes, all of them. All of them, he responded. Yes, and all of the 11's, al of the 12's, all of the 13's and some of the 14's. He didn't much like or believe that.
He ran a 14.0x. I was nice enough to not say I told you so.
I had a friend at work (about 1985) put a 350 chevy in a full sized buick stock gear and street tires he ran a 15.0 with it and everyone at work laughed at him. I told him the next ones to laugh take them out and race them. He kicked all their asses. Remember mid 80's Z28, TransAm's etc. He got the last laugh.
But they did
My stock 68 gts 340 auto 3.23s e-70-14s went 14.3@97mph with 85k on it as purchased from the original owner in 1983 with nothing but a tune up and a timming bump anybody with a 1/2 a clue knows the early carbs cost 20 hp on the 340 and just that change gets a 3.23 car 14.0 14.1 stock.
mr roco was correct mph tells the story A-bodys run 94 to 99 mph 3.23s to 3.91s there are 20 drag test atleast with those mph numbers most were 96 to 97 3.91 cars duster 340 aar cuda were 99mph and yes i saw the 15.0 aar cuda or ta test really a 340 6pak doing 15.0 @94 lol
B body 383 mph was 93 mph with gears and wider tires thats it and the 14.7 was its claim to fame you know that car was super tuned 15.0 or higher was the norm.
0 to 60 in 8.1? lol maybe backwards 6.4 6.5 was avg for a 340 for a B body 6.9 if you could drive the race is over
mr hemiSSdart 383 A-body went 14.91 with 3.55s something tells me he can drive
Its funny that in the know a-body should be experts do not know what the proper times and mph that these cars ran with a good driver ( maybe themselves ) and not an asshat
11s in a 383 car from the 80s that is another story the the super stock hemi cudas and darts turned 11.20s@120 as delivered @3020 lbs or so
What its the 383 A body curb weight? 3500 lbs thats alotta hp say 520 crank almost 1.4 hp/cube
justinp61
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One of the tricks was to replace the 340 carb with an AVS off a 440. Most people wouldn't know the difference looking at it.
Most people didn't know how to set them up. lol
The old man and uncle did though.
I sold all my Carters and strip kits after trying a 750 DP my friend lent me, a far better carburetor. imo
justinp61
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I agree, my first Holley was an 850 DP that was on a 68 Coronet RT that my cousin bought, it just so happened that I had the correct AVS for it. We traded even, both of us were happy.
All I know is both are fun !
They both wind and both have less torgue then the bigger cube motors.
Gears and tuning always make the difference.
I have both a 383 in my clone runner and a 340 in my Cuda.
Once I get the new 383 in my road runner I'll compare.
Cuda is a 4 speed has 292 cam and edlbrocks ported by IQ
Clone runner has 274xe with stealths with valve job and minor work from prh.
All I know is they will both pull hard.
They both wind and both have less torgue then the bigger cube motors.
Gears and tuning always make the difference.
I have both a 383 in my clone runner and a 340 in my Cuda.
Once I get the new 383 in my road runner I'll compare.
Cuda is a 4 speed has 292 cam and edlbrocks ported by IQ
Clone runner has 274xe with stealths with valve job and minor work from prh.
All I know is they will both pull hard.
oldhemiguy
Active Member
Guys talk all you want I was lucky enough to have cars in this time my first car was a 68 barracuda 340 kick the **** out of any 383 car owned 440 cars hemi cars and ran SS/AA
oldhemiguy
Active Member
Back then you needed to know what you lined up with or loose and I would take on any 383 but you always had the good guys and they would be a handful Ididn't always win
I have owned my '68 FB Formula S since 6 June 1969 which was the last day of my junior year in HS. I raced it hundreds of times at SoCal strips so have lots of experience with the car. It was an early build (August 1967 casting date) 340. The original owner only put Cragars on it and cutout exhaust. Tires were H70x14 retreads with a sticky compound (back when there actually were shops that would retread tires!) Cost $20 each back then. I ran the car mostly with the rear seat out, but otherwise stock. It turned a best of [email protected] with a stock 3.55 SureGrip. I had about 350 runs ont he car the first 4 years I owned it. I got good a launching the car with minimal weal spin, but back then there was no 60' times so no data. I saw a number of new 340 Dusters that ran 13.70's to 13.90's in stock form, so that was much quicker than magazine times for all of these 340's. I used to spank BB Chevy's as they had no traction, and BB Camaro's were even easier.
My best race was at Irwindale when I raced a brand new 440+6 Cuda. We were neck and neck the entire track, but I pulled him at top end and ran a 13.55 @ 104.1. The engine was missing at top end so I pulled into the pits to change plugs. The 440+6 pulled in next to me and wanted to see my Hemi as he said he hadn't been beat yet. His jaw dropped when he saw the 340. Just walked away.
My best race was at Irwindale when I raced a brand new 440+6 Cuda. We were neck and neck the entire track, but I pulled him at top end and ran a 13.55 @ 104.1. The engine was missing at top end so I pulled into the pits to change plugs. The 440+6 pulled in next to me and wanted to see my Hemi as he said he hadn't been beat yet. His jaw dropped when he saw the 340. Just walked away.
Rat Bastid
Dunamis Metron
Mopar Action had an article on a '60 M-Code Cuda. Back in '69, Cliff Gromer and Joe Oldham tested it in NJ in a cold October. Turned a 14.04@104 stock. They took it to a dealer for a check and tune. Got 9" slicks from Motion Performance and back on the track turned [email protected] smoking the tires. Setting timing at 36°, and a pressure adjustment got them to 13.53 @ 106.6. Power-braking and leaving at 3000 got them to [email protected]. Another run shifting at 5200 vs 5000 got them to a 128.82@ 110.9. Lowering the rear pressure more and increasing the fronts to 45 PSI got them to a best of [email protected].
Tire traction and driving technique were what it took to go fast back then. Hard to do on E70's.
Tire traction and driving technique were what it took to go fast back then. Hard to do on E70's.
Ok - some real world here. My 69 Charger was a 383 2-bbl. Don't recall but it may have been a 2.76 axle. I bought it with 32k mikes on it in 1978 from original owner. Dead, bone stock...unmolested. Cars weighs over 4200#'s. Took it to Thompson Drag Raceway back in the day to see what this car would do. 15.76 @ I-don't-recall mph. Woohoo - what a speedster!!
Fast forward a few years to 1984 when I bought my 71 Demon 340 from the original owner with 34k mile's on it. It had either 3.23 or 3.55 gears. 3360 pounds. A Cam Dynamics cam that had a little thump to it but not much. Everything else dead stock. Ran 14.90's at ??? mph.
Too many years ago to remember the mph's because back then, it was all about et! And mine were slow! Warmed up the 383 a bit and got it down to 13.04 at 104 but couldn't crack the 12's.
Neither car has accumulated many more miles since I got them. The Demon remains a sheep in wolf's clothing and is all restored while the Charger spent duty through 1993 at the track with its mild 440 put in in 1991 and ran mid-12's at 108. It's sat in the garage ever since waiting it's turn to shine again!
Fast forward a few years to 1984 when I bought my 71 Demon 340 from the original owner with 34k mile's on it. It had either 3.23 or 3.55 gears. 3360 pounds. A Cam Dynamics cam that had a little thump to it but not much. Everything else dead stock. Ran 14.90's at ??? mph.
Too many years ago to remember the mph's because back then, it was all about et! And mine were slow! Warmed up the 383 a bit and got it down to 13.04 at 104 but couldn't crack the 12's.
Neither car has accumulated many more miles since I got them. The Demon remains a sheep in wolf's clothing and is all restored while the Charger spent duty through 1993 at the track with its mild 440 put in in 1991 and ran mid-12's at 108. It's sat in the garage ever since waiting it's turn to shine again!
Ode to the mighty 340. 
I saw that test, they figured if they replaced the restrictive exhaust with headers and if the car had traction it would easily do mid 12's or better.
Most likely the fastest production Mopar of that era.
rmchrgr
Skate And Destroy
I agree with this 100%. Not a fan of 383s myself. I have a lot of time behind the wheel of a 383 B body. My '68 Coronet 440 has a basically stock 383 with headers that goes nowhere slowly. Has the factory hi-po 335 hp "Road Runner" hydraulic cam, stock 452 heads, (no better or worse than 906), factory flat top pistons above deck, 2 1/2" exhaust and factory 4 speed with 3.23 gears - it's your garden variety Super Bee in 440 trim. It's got EFI and runs pretty good, it just can't get out of it's own way. The hydraulic cam barely gets over 4K rpm before it starts running out of breath. Definitely needs at least a 3.55 gear. It cruises on the highway OK but it's not like a 440 that when you punch it from a roll can break the tires loose. Also agree that any quick 383 is built up, no way a stock one is making any real power.The MPH tells all.
This will rile some egos and feathers, but the 383 B-bodies in stock trim were pigs. Heavy, severely underpowered (335hp@5,000 at best), undercubed, under RPM'd, under everything.
If you had or have a quick 383, it isn't stock, and it has some gear behind it.
A tuned only 340, especially a 6 pack, or a tuned and warmed over 340 A-body will mop a stock 383 B-body.
Neither of those cars need more than a 10.50 tire to hook and will easily fit under either car, just little more work under the A-body, requiring offset shackles and proper offset.
Gimme a 340 A body every time over a 383 B body.
pure stock class
69 gts 340 727 4.30s e70s no soft compound 13.01@104
Vs
69 ss nova 396/375hp 4 spd 4.10s [email protected]
nova wins by 1/2 second
dart sucked the paint off it out of the hole 2 plus cars still ahead 1 plus car for quite a distance lol
383 b-bodys that would be 8 cars out of the hole lol
I know my dad ran 13.9 in my parents 70 383 auto with 3.23 gears.
I know he put headers and a holley 750 on it.
I can't remember if he changed the intake ?
It had different tires as well, but not slicks.
I know he put headers and a holley 750 on it.
I can't remember if he changed the intake ?
It had different tires as well, but not slicks.
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Ironracer
Gearhead
I could be mistaken but there's a 340-68 Dodge Coronet at Big Daddy's Museum I believe it's an original 340 car I could be wrong about the originality... I was there on Christmas of 2019 and I actually took Princess, ( she was dying of cancer complications from a botched surgery) there with me..
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