Corrected Horsepower Factors > 340 ~ 360 ~ 383 ~ 400 ~ 426-S ~ 440

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69 Cuda 440

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Corrected Horsepower Factors


1962
383/343 HP ............ 320 HP

1963
383/330 HP ............ 280 HP

1964
383/330 HP ............ 280 HP
426/365 HP ............ 300 HP ..... 'Street-Wedge'

1965
383/330 HP ............ 280 HP
426/365 HP ............ 300 HP ..... 'Street-Wedge'

1966
383/325 HP ............ 280 HP

1967
383/280 HP ............ 280 HP ..... A-Body
383/325 HP ............ 280 HP
440/375 HP ............ 350 HP

1968
340/275 HP ............. 299 HP
383/300 HP ............. 295 HP ..... A-Body
383/330 HP ............. 295 HP ..... B-Body
383/335 HP ............. 300 HP ..... Road Runner and Super Bee
440/375 HP ............. 356 HP

1969
340/275 HP ............. 299 HP
383/330 HP ............. 295 HP ..... A-Body
383/330 HP ............. 295 HP ..... B-Body
383/335 HP ............. 300 HP ..... Road Runner and Super Bee
440/375 HP ............. 356 HP
440/390 HP ............. 395 HP ..... 'Six Pack' and 'Six Barrel'

1970
340/275 HP ............. 299 HP
340/290 HP ............. 320 HP ..... 'T/A' and 'AAR'
383/330 HP ............. 295 HP
383/335 HP ............. 300 HP
440/375 HP ............. 356 HP
440/390 HP ............. 405 HP ..... 'Six Pack' and 'Six Barrel'

1971
340/275 HP ............. 314 HP
383/300 HP ............. 295 HP
440/370 HP ............. 350 HP
440/385 HP ............. 405 HP ..... 'Six Pack' and 'Six Barrel'

1972
340/240 HP ............. 285 HP
400/255 HP ............. 305 HP
400/265 HP ............. 320 HP ..... w/ 'Fresh-Air Package'
440/280 HP ............. 340 HP
440/290 HP ............. 345 HP ..... w/ 'Fresh-Air Package'

1973
340/240 HP ............. 285 HP
400/260 HP ............. 298 HP
440/280 HP ............. 340 HP

1974
360/245 HP ............. 305 HP
400/250 HP ............. 310 HP
440/275 HP ............. 345 HP
 
I thought that the H.P. 383 in the Super Bee and the Road Runner would have been good for at least 10 horses over the A-Body with it's restrictive exhaust manifolds.......
How about torque figures for the same engines?
Is this the N.H.R.A. factoring?
If so, when?
Also, at what R.P.M. were these figures attained?
How about figures for the 426 Hemi in all of it's production years?
Great post, BTW!
 
69 Cuda 440 said:
Rusty,

I have to admit it. I was 'wrong' on my earlier assumptions in previous posts.

I figured the '1971' Thermoquad and Intake was only worth about {+ 7 HP}
over the Carter AVS.

I Feel Shame.
Click to expand...


lol But at least you figured "in the right direction"

LMAO
 
i did read a Dulchic test on a 340 built to stock specs including original carb
...it produced 281 hp.and they claimed the original carb was not working correctly.
Then added a bigger (800?)carb and it jumped up to a bit over 300.
..it seems a sharply tuned 340 could indeed hit 300
adding the thermoquad should show a nice gain over the stock small AVS.
those numbers are probably very close...i love these posts
 
69 Cuda 440 said:
Corrected Horsepower Factors


1962
383/343 HP ............ 320 HP

1963
383/330 HP ............ 280 HP

1964
383/330 HP ............ 280 HP
426/365 HP ............ 300 HP ..... 'Street-Wedge'

1965
383/330 HP ............ 280 HP
426/365 HP ............ 300 HP ..... 'Street-Wedge'

1966
383/325 HP ............ 280 HP

1967
383/280 HP ............ 280 HP ..... A-Body
383/325 HP ............ 280 HP
440/375 HP ............ 350 HP

1968
340/275 HP ............. 299 HP
383/300 HP ............. 295 HP ..... A-Body
383/330 HP ............. 295 HP
383/335 HP ............. 300 HP
440/375 HP ............. 356 HP

1969
340/275 HP ............. 299 HP
383/330 HP ............. 295 HP ..... A-Body
383/330 HP ............. 295 HP
383/335 HP ............. 300 HP
440/375 HP ............. 356 HP
440/390 HP ............. 395 HP ..... 'Six Pack' and 'Six Barrel'

1970
340/275 HP ............. 299 HP
340/290 HP ............. 320 HP ..... 'T/A' and 'AAR'
383/330 HP ............. 295 HP
383/335 HP ............. 300 HP
440/375 HP ............. 356 HP
440/390 HP ............. 405 HP ..... 'Six Pack' and 'Six Barrel'

1971
340/275 HP ............. 314 HP
383/300 HP ............. 295 HP
440/370 HP ............. 350 HP
440/385 HP ............. 405 HP ..... 'Six Pack' and 'Six Barrel'

1972
340/240 HP ............. 285 HP
400/265 HP ............. 298 HP
440/280 HP ............. 340 HP
440/290 HP ............. 345 HP

1973
340/240 HP ............. 285 HP
400/260 HP ............. 298 HP
440/280 HP ............. 340 HP
Click to expand...

Homer

1969
Plymouth 'Air Grabber' {Under Hood Fresh-Air Induction {Code N96} ........... $55.30
Dodge 'Ramcharger Hood' {Code N96} ..................................................... $73.50

Both of these Fresh-Air Package Units did 'not' change the 'advertised' Factory Horsepower ratings.

The Consensus > Was that they were worth approximately {+7 Horsepower} at 90 MPH.
 
ir3333 said:
i did read a Dulchic test on a 340 built to stock specs including original carb
...it produced 281 hp.and they claimed the original carb was not working correctly.
Then added a bigger (800?)carb and it jumped up to a bit over 300.
..it seems a sharply tuned 340 could indeed hit 300
adding the thermoquad should show a nice gain over the stock small AVS.
those numbers are probably very close...i love these posts
Click to expand...

Car Craft, did a dead stock 69 340 Dart,pure stock restoration. (Beautiful car,BTW..) Bob Lambeck did the rest build, stock cam, intake /exhaust manifolds ,& the rest. It dynoed 315 @ the flywheel,on a engine dyno. For a dead stock ( blueprinted,most likely..) Intake /exhaust manifolded 340, that's not bad(this was 1985,mind you).
 
1969
340/275 HP ............. 299 HP
383/330 HP ............. 295 HP ..... A-Body..
I find this completely interesting... With all the attention to 440/Six Pack/Hemi packages, they refactored the little 340,this high.. Small block Chev defense,anyone? ( thinking the 275 /327 ,& 295/350 '67-69 small block Camaro apps..( Boo!,lol)...
 
Abodybomber said:
1969
340/275 HP ............. 299 HP
383/330 HP ............. 295 HP ..... A-Body..
I find this completely interesting... With all the attention to 440/Six Pack/Hemi packages, they refactored the little 340,this high.. Small block Chev defense,anyone? ( thinking the 275 /327 ,& 295/350 '67-69 small block Camaro apps..( Boo!,lol)...
Click to expand...

A-Body-Bomber

Lets not forget,

In 1968, the NHRA 'put the screws' to Mopar, as they re-factored the 340 to 310 Horsepower and put them in the {10.00 to 10.49} Weight-to-Horsepower {E/Stock}.
 
Abodybomber said:
1969
340/275 HP ............. 299 HP
383/330 HP ............. 295 HP ..... A-Body..
I find this completely interesting... With all the attention to 440/Six Pack/Hemi packages, they refactored the little 340,this high.. Small block Chev defense,anyone? ( thinking the 275 /327 ,& 295/350 '67-69 small block Camaro apps..( Boo!,lol)...
Click to expand...

A-Body-Bomber

Lets not forget,

In 1968, the NHRA 'put the screws' to Mopar, as they re-factored the 340 to 310 Horsepower and put them in the {10.00 to 10.49} Weight-to-Horsepower {E/Stock} Class.
 
ir3333 said:
i did read a Dulchic test on a 340 built to stock specs including original carb
...it produced 281 hp.and they claimed the original carb was not working correctly.
Then added a bigger (800?)carb and it jumped up to a bit over 300.
..it seems a sharply tuned 340 could indeed hit 300
adding the thermoquad should show a nice gain over the stock small AVS.
those numbers are probably very close...i love these posts
Click to expand...

I did the same swap (kind of, it was a TQ instead of 800 AFB/AVS) and road tested, not dyno tested the carb swap in '88. Since then I have been telling people about the use of the TQ being worth while. I never heard the end of the use of a crap carb was a waste of time. I still say today, the TQ isn't a bad S/S carb at all, worth the time to learn it.

I then did the MP LD340 mod on the said intake.
 
I'm curious about the listings for the 400. Are those numbers for the 400 "P" or the 400 "M"?
 
mguner said:
I'm curious about the listings for the 400. Are those numbers for the 400 "P" or the 400 "M"?
Click to expand...

That would be the 1972 and 1973 ~ 400 4-Barrel {Engine Code "P"}

That Engine was available in the;
* Plymouth Road Runner and Satellite packages.
* Dodge Charger 'Rallye' and 'SE', and Coronet packages.
 
69 Cuda 440 said:
That would be the 1972 and 1973 ~ 400 4-Barrel {Engine Code "P"}

That Engine was available in both the Plymouth Road Runner and Dodge Charger 'Rallye'.
Click to expand...

And Charger SE badged as 400 MAGNUM.....

I wasn't sure if the big Chryslers with the 400 4 barrel were a "P" code or were they even offered in them?
 
rumblefish360 said:
I did the same swap (kind of, it was a TQ instead of 800 AFB/AVS) and road tested, not dyno tested the carb swap in '88. Since then I have been telling people about the use of the TQ being worth while. I never heard the end of the use of a crap carb was a waste of time. I still say today, the TQ isn't a bad S/S carb at all, worth the time to learn it.

I then did the MP LD340 mod on the said intake.
Click to expand...

Lots of records have been set and broken in stock eliminator and s/s with the TQ. You'd think enough that people would sit up and take notice.
 
RE Quote:

1969
Plymouth 'Air Grabber' {Under Hood Fresh-Air Induction {Code N96} ........... $55.30
Dodge 'Ramcharger Hood' {Code N96} .................................................. ... $73.50

Both of these Fresh-Air Package Units did 'not' change the 'advertised' Factory Horsepower ratings.

The Consensus > Was that they were worth approximately {+7 Horsepower} at 90 MPH.

Personally, don't believe any measurable effect on horsepower with air grabber type scoop (I bracket raced a new 1971 RR 383 auto with air grabber back in the day). For 70-72 it would be easy to verify during track conditions, just close the trap door every other run and then compare all the quarter mile ET's and MPH with the other 50% made with the scoop in the open position.
 
Back in the 60's Chrysler knew more about air scoops than the other guys. They knew about laminar and turbulent airflow, hence the big hemi and "mailbox scoops. Worked better than NACA ducts. Sorry Ford.
 
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