Team Frito(you..) , Frisky Rob like that is hilarious ( and truthful...).Thank you kind sir. You are certainly full of.......
..................specifications. LOL
Team Frito(you..) , Frisky Rob like that is hilarious ( and truthful...).Thank you kind sir. You are certainly full of.......
..................specifications. LOL
Now did the 1968 {383/330 HP} and 1967 {383/325 HP} Plymouth
B-Body cars match up in the NHRA in 1968 when the Stock Class
Weight Breaks were re-aligned.
Look at out how the 1968 Plymouth B-Body cars fit into the weight class.
1968 Plymouth ~ 383/330 HP
1968 - Belvedere 2-Door Sedan .... #3419 lbs. ..... 10.36 Wt/HP ....... E/S or E/SA
1968 - Satellite 'Hardtop' ............. #3445 lbs. ..... 10.44 Wt/HP ....... E/S or E/SA
1968 - Satellite 'Convertible' ......... #3515 lbs. ..... 10.65 Wt/HP ...... F/S or F/SA
1968 - Sport Satellite 'Hardtop' ..... #3485 lbs. ..... 10.59 Wt/HP ....... F/S or F/SA
1968 - Sport Satellite 'Convertible' . #3585 lbs ..... 10.86 Wt/HP ....... F/S or F/SA
1967 Plymouth ~ 383/325 HP
1967 - Belvedere 2-Door Sedan ... #3460 lbs. ....... 10.64 Wt/HP ...... F/S or F/SA
1967 - Belvedere 'II' Hardtop ...... #3484 lbs. ........ 10.72 Wt/HP ...... F/S or F/SA
1967 - Belvedere 'II" Convertible . #3556 lbs ......... 10.94 Wt/HP ..... F/S or F/SA
1967 - Satellite 'Hardtop' ............ #3534 lbs ......... 10.87 Wt/HP ..... F/S or F/SA
1967 - Satellite 'Convertible' ....... #3606 lbs. ........ 11.09 Wt/HP ..... G/S or G/SA
Did N.H.R.A classes allow tire size/compound change/ chassis tuning ?!?!?, in these middleweight classes? This might make up, for some " horsepower factoring"....
What I don't understand is that the 68 383 Roadrunner engine was rated at 335, the same as a 69 383 Magnum. I thought the Magnum was a hotter engine.
------------------------------------------------------------------------------------------------
1968 Casting #2843906
* Open Chamber ....... 79.5 CC's {Minimum} ~ 88.0 CC's {Factory}
* Intake Valve .......... 2.08"
* Exhaust Valve ........ 1.74"
* Intake Flow ............ 203 CFM @ .440"
* Exhaust Flow .......... 145 CFM @ .440"
Note;
The 'Open-Chamber' design provided improved flow, and offered lower emission's at low RPM levels.
Note;
With the 'Open-Chamber' design, there would be less shrouding of the
Valves, which lowered the turbulence within the Combustion Chamber.
Note:
The #906 Castings were listed with having 10% larger volume Intake Ports, which
included an improved flow-design with a radius-type design, as opposed to the
earlier flat-floor design. The #906 Casting Intake-Port provided for increased
performance at higher RPMs.
Note;
The #906 Castings were equipped with larger Exhaust Valves {1.74" to 1.60"},
which was an increase of {+8%} in size. The Valve-Bowl area was also increased to accommodate the larger valve.
Note;
The #906 Casting also had an improved design within the port, as there were less
restrictive bends, which improved flow {+18%}.
Looking at the "stock casting " airflow numbers...., I can see why just a good radius cutter/honest good valve job,really wakes the stock head castings up... Just wow,there was room 4 improvement.
Boston Bob,
No, the 383/335 HP {Road Runner / Super Bee} engine was never found
in the 1968 or 1968 Dodge Charger.
It was only the 'weak-sister' 383/330 HP.
That was too bad, as the Charger 383 should have been part of that package.
The 'magical' 383
1967 383/325 HP ........... 1968 383/330 HP ............... 1968 383/335 HP
325 HP @ 4800 RPM's .......... 330 HP @ 5000 RPM's ........... 335 HP @ 5200 RPM's
425 Ft/Lbs. @ 2800 RPM's ... 425 Ft/Lbs. @ 3200 RPM's .... 425 Ft/Lbs. @ 3400 RPM's
-----------------------------------------------------------------------------------------
A general overview in the differences, and Horsepower Gain.
The 1967 ~ 383/325 HP was the 'base' 383 Performance Engine found
in all B-Body Mopars.
This was the same combination as the previous year {1966 Models}.
The 1968 ~ 383/330 HP was the 'base' 383 Performance Engine found in the
B-Body Models.
* Plymouth > Belvedere, Belvedere II, Satellite and Sport Satellite
* Dodge > Coronet, Coronet 440, Coronet 500 and 'base' Charger
The 1968 ~ 383/335 HP was the 'special' 383 Performance Engine found
only in the 'new' Road Runner and 'new' Super Bee.
Also in 1968, the 383 Engine found in the A-Body Cars {Barracuda
and Dart GTS} was rated at a low 300 Horsepower, due to a restrictive
Exhaust System.
300 HP @ 4400 RPM's
400 Ft/Lbs. @ 2400 RPM's
Now did the 1968 {383/330 HP} and 1967 {383/325 HP} Plymouth
B-Body cars match up in the NHRA in 1968 when the Stock Class
Weight Breaks were re-aligned.
Look at out how the 1968 Plymouth B-Body cars fit into the weight class.
1968 Plymouth ~ 383/330 HP
1968 - Belvedere 2-Door Sedan ....... #3419 lbs. ........ 10.36 Wt/HP ....... E/S or E/SA
1968 - Satellite 'Hardtop' ................ #3445 lbs. ........ 10.44 Wt/HP ....... E/S or E/SA
1968 - Satellite 'Convertible' ............ #3515 lbs. ......... 10.65 Wt/HP ...... F/S or F/SA
1968 - Sport Satellite 'Hardtop' ........ #3485 lbs. ......... 10.59 Wt/HP ....... F/S or F/SA
1968 - Sport Satellite 'Convertible' ... #3585 lbs .......... 10.86 Wt/HP ....... F/S or F/SA
1967 Plymouth ~ 383/325 HP
1967 - Belvedere 2-Door Sedan ..... #3460 lbs. .......... 10.64 Wt/HP ...... F/S or F/SA
1967 - Belvedere 'II' Hardtop ........ #3484 lbs. ........... 10.72 Wt/HP ...... F/S or F/SA
1967 - Belvedere 'II" Convertible .. #3556 lbs ............. 10.94 Wt/HP ..... F/S or F/SA
1967 - Satellite 'Hardtop' .............. #3534 lbs ............ 10.87 Wt/HP ..... F/S or F/SA
1967 - Satellite 'Convertible' ......... #3606 lbs. ........... 11.09 Wt/HP ..... G/S or G/SA
I looked forward to Paul's Match Race threads like a little kid on Christmas morning. Agree, he is definitely missed around here. His involvement (and his family) in NHRA racing made for great reading.I miss 69 440 Cuda's post. Such a knowledgeable person and was a huge asset for this forum.