1966 G/Stock Wars ~ Mopar 273/235 HP ~ Chevy 283/220 HP ~ Ford 289/225 HP

-
6

69 Cuda 440

Legandary Member
Legendary Member
Joined
Dec 12, 2012
Messages
4,244
Reaction score
434
Location
Wilton, Connecticut
'G/Stock Wars'

1966 NHRA G/Stock = 12.50 to 13.99 Wt/HP

Barracuda and Dart GT
273/235 HP
* 235 HP @ 5200 RPM
* 280 Ft/Lbs. @ 4000 RPM

Chevrolet Chevy II
283/220 HP
* 220 HP @ 4800 RPM
* 295 Ft/Lbs. @ 3200 RPM

Ford Mustang
289/225 HP
* 225 HP @ 4800 RPM3
* 305 Ft/Lbs. @ 3200 RPM
 
Current NHRA Horsepower Factors

Engine.............................. Stock......Super Stock

Mopar 273/235 HP ............ 210 ......... 230

Chevrolet 283/220 HP ....... 223 ......... 237

Ford 289/225 HP ............... 207 ......... 215
 
I think you have to give it to the 273 on this one...the 289 is basically a 2-barrel motor with flat top pistons and a 4-barrel carb...same cam. SBCs usually run well, however.
 
Aaron,

Back in 1966 {G/S or G/SA} = {12.50 to 13.99 Wt/Hp}\

The 273/235 HP was the 'Top Dog' in NHRA Class between the '3' Little Small Blocks.

1966 NHRA Horspower Factors

* Barracuda ...... #2940 lbs. = 12.51 Wt/HP
* Dart GT ......... #2945 lbs. = 12.53 Wt/HP
* Nova SS ........ #2867 lbs. = 13.02 Wt/HP
* Mustang GT ... #2874 lbs. = 12.77 Wt/HP
 
1966 Barracuda Formula S 0-60 in 9.1 seconds, 1/4 mile in 17.2 seconds at 81 mph (source Car and Driver June 1966)
1965 Mustang 2+2 289 cu rated at 210hp 0-60 8 seconds, 1/4 mile in 16.4 seconds at 81.5 mph ( source Car and Driver 1965 yearbook)
1965 Dart GT with 273 Charger 0-60 in 8.2 seconds, 1/4 mile in 16.9 seconds at 87 mph ( source Car and Driver 1965 yearbook)

Sadly nothing on the Chevy II with a 283 cu

I am still going through the years, I have a late 1964 C/D which is a shoot out between the HP 289 cu 271HP vs the 65 Formula S
 
1966 Chevrolet Nova ~ 283/220 HP {Code L-77}

The book states, only 1386 Produced. Tough to find Magazine Performance Tests.

Though back in March 1966, Baldwin Chevrolet stated that they turned 16.00's @ 88 MPH
with a 'Pure Stock' 283/220 HP, 4-Speed and 10-Bolt Rear w/3.55 Posi-Gears.
 
Found some information, sadly only Shelby 289 Mustangs

1965 Mustang GT 350 289 cu - 306 hp 0-60 6.5 seconds, 1/4 mile 14.9 seconds at 95 mph (source Car and Driver May 1965)

On a interesting note, the 1966 Mustang GT 350H (almost specs, almost same time) cost $17 a day plus gas to rent and $70 a week plus gas to rent - C/D May 1966)
 
I know the answer to this one for sure because I was there in my 66 Dart GT. I was never beat by either of those cars.
 
Magazine Results all over the board.

Car Life {July 1964}
1964 Barracuda 273/180 HP ~ Automatic ~ 2.93 Gears .............. 17.80 @ 72 MPH

Motor Trend {January 1965}
1965 Barracuda 273/235 HP ~ 4-Speed ~ 3.55 Gears ................ 16.10 @ 87 MPH

Auto Topics {February 1965}
1965 Dart GT 273/180 HP ~ 3-Speed ~ 3.23 Gears ................... 17.10 @ 82 MPH

Road and Track {April 1965}
1965 Barracuda 273/235 HP ~ 4-Speed ~ 3.23 Gears ................ 16.32 @ 87 MPH

Car and Driver {November 1965}
1966 Dart GT 273/235 HP ~ Automatic ~ 3.23 Gears ................. 16.90 @ 84 MPH

Car Life {January 1966}
1966 Dart GT 273/235 HP ~ 4-Speed ~ 3.23 Gears .................... 16.40 @ 85 MPH

Car and Driver {June 1966}
1966 Barracuda 273/180 HP ~ Automatic ~ 3.23 Gears ............... 17.60 @ 81 MPH

Speed and Supercar {October 1966}
1967 Barracuda 273/235 HP ~ 4-Speed ~ 3.91 Gears ................. 15.90 @ 89 MPH

Car Life {March 1967}
Barracuda 273/235 HP ~ Automatic ~ 3.23 Gears ....................... 16.90 @ 85 MPH
 
Comparison Test

Road and Track {April 1965}

$(KGrHqV,!pEE8Wf8rDbiBPIIydnE2Q~~60_57.JPG
 
Johnny D,

In 'Motor Trend' {August 1967}.

The Magazine performed a 'revisit' performance test on a 1967 Dart GT 273/235 HP 4-Speed 'Convertible' with 3.23 Gears 'Sure-Grip'.

The Dart GT had 8000 miles on the Odometer.

They ran the car at Carlsbad Raceway, and took '11-Passes' with the Dart GT.

Best Performance ........ 16.54 @ 86.4 MPH

Now remember, this was with a Dart GT with 8000 Miles on it, and was {+50 lbs.} 'heavier' than the Hardtop.

Dart GT 'Convertible........ Shipping Weight; #2995 lbs. ...... Curb Weight; #3140 lbs.
 
The only wrench in the works here seems to be the NHRA refactored horsepower numbers...I'm a little surprised at how low the 273 is rated, and how high the 283 is.
 
Aaron65 said:
The only wrench in the works here seems to be the NHRA refactored horsepower numbers...I'm a little surprised at how low the 273 is rated, and how high the 283 is.
Click to expand...

In 'Stock Class'

In 2002, the 273/235 HP was dropped from 235 HP to 220 HP.

But in June 2008, they were dropped down to 210 HP in Stock Class 'only.
 
1966 Carburetor Comparison

...............Mopar 273/235 HP......... Chevrolet 283/220 HP.......... Ford 289/225 HP

* Make ............ Carter AFB .................. Rochester 4GC...................... Autolite #4100
* Primary .......... 1.437"........................... 1.437" ............................ 1.437"
* Secondary....... 1.563" .......................... 1.437" ............................ 1.437"
* Venturi Size..... 1.063" x 1.250" ............. 1.125" x 1.250" ............... 1.080" x 1.189"

* CFM Rating...... 460 ............................. 486 ................................ 480

The General Rule is, that the Rochester 4-GC can pump out 500+ CFM's.
 
You must log in or register to reply here.
-

Back
Top