1966 Plymouth Barracuda Facts, Figures, and Specifications
1966 Barracuda – Adding Refinement
For the 1966 model year the Barracuda received new taillamps, a new cleaner and more unified front fascia, and a new instrument panel. Disc Brakes were also available. The 1966 front sheet metal which, except for the grille, was shared with the Valiant. It better defined the view from the front, and the new grille featured a strong grid theme.
1966 Plymouth Barracuda Resources
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1966 Plymouth Barracuda Facts – Body Paint Color Codes
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1966 Plymouth Barracuda
| 6 Light Mauve | |
| A Silver | |
| B Black | |
| C Light Blue | |
| D Medium Blue | |
| E Dark Blue | |
| G Dark Green | |
| K Light Turquoise | |
| L Dark Turquoise | |
| P Bright Red | |
| Q Dark Red | |
| R Yellow | |
| S Soft Yellow | |
| W White | |
| X Beige | |
| Y Bronze | |
| Z Citron Gold |
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1966 Plymouth Barracuda Facts and Specifications
General Year Information – 1966 Plymouth Barracuda
The 1966 Barracuda was redesigned somewhat forward of the windshield, but for the most part, unchanged at the rear. The car used the new split Valiant grille opening, but the inserts had a grid style pattern. A circular medallion was set in the horizontally ribbed body colored center panel. “Barracuda” in script was set in front of the front wheel openings, close to the front fascia. The trim above the deck lid was changed to a unique Barracuda fish logo for the first time. On cars having the Barracuda S option package, a small, circular medallion was placed below the script. Deluxe models featured fender-top turn signal indicators with a stylized fin. The bumpers were larger, that actually stretched appearance and made the car appear wider.
The 225 CID 145 HP SlI-6, optional on Valiant models, was now standard in the Barracuda. The 273 CID two-barrel V-8 remained standard for the V-8 Series Barracuda. Pin striping was placed along the Barracuda’s belt line. A vinyl top was a new option. The Dashboard was changed slightly. A console was now optional.
1966 Plymouth Barracuda Factoids
The 225 cubic inch 145 horsepower Slant Six (optional on other Valiant models) was standard in the Barracuda, leaving the 170 CID version only available on the Valiant. This left the Barracuda with the 225 CID I-6, the 273 2-barrel V-8 and the 273 CID Formula S 4-barrel as the only engines in the line.
See the 1966 Barracuda AMA Specifications Sheet for more information on available engines HERE.
1966 Plymouth Barracuda Facts – Models Offered
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Barracuda – The Barracuda was continued with the uniquely styled roof, deck and rear window. Trim features, front to rear, were distinct to this model. They included a unique grille, and larger front bumper, unique front fenders and hood, wide rocker sill panels and a chrome band across the rear window base. “Plymouth” in block letters appeared on the front of the hood. “Barracuda”. in script. was on on the top front sides of the front fenders and A circular medallion with “Plymouth” adorned the center of the grille.
Standard equipment included bucket front seats; bucket shaped rear bench seat with folding back rest; special finned wheel covers, chrome backup light housings and the base 225 CID I-6 was the starting power team, with the2-barrel 273 CID V-8 and the “Commando” 4-barrel 235 HP V-8 as options.
Barracuda Formula S – The Barracuda Formula S was not a separate model but an option. However, we describe it here for clarity. The Formula S included all the standard Barracuda features, with the following changes: the Commando V-8 engine as standard, heavy-duty front torsion bars, heavy-duty rear springs, firm ride shock absorbers, sway bar, rally stripes, extra wide wheel rims, Goodyear Blue Streak tires, a tachometer, and “Formula S” medallions (pictured) at the front of the fenders, just below the “Barracuda” script.
1966 Plymouth Barracuda Facts – Engines
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225 CID I-6. Overhead valves. Cast iron block. Four main bearings.
Displacement: 225 cubic inches.
Bore and stroke: 3.400 x 4.125 inches.
Compression ratio: 8.40:1.
Horsepower: 145 @ 4000 RPM.
Torque: 215 @ 2400 RPM.
Valve lifters: Mechanical.
Camshaft Timing: 240°, Exhaust: 236°, Overlap: 16°. Valve Lift: Intake 0.394″, Exhaust 0.390″.
Carburetor: (manual transmission) Holley one-barrel: R-3271 (automatic transmission) Holley R-3272 A. California: (manual transmission) Holley one-barrel: R-327173A (automatic transmission) Holley R-3274 A.
273 CID 2-Barrel V-8. Overhead valves. Cast iron block. Five main bearings.
Displacement: 273 cubic inches.
Bore and stroke: 3.625 x 3.310 inches.
Compression ratio: 8.8:1.
Horsepower: 180 @ 4200 RPM.
Torque: 260 @ 1600 RPM.
Valve lifters: Mechanical.
Camshaft timing: Intake 240°, Exhaust 240°, Overlap: 16°. Valve Lift: (Intake) 0.395″, (Exhaust) 0.405″.
Carburetor: Two barrel: (manual transmission) Ball & Ball BBD-4113S (automatic transmission) Ball & Ball BBD-4114S. California (manual transmission) Ball & Ball BBD-4115S (automatic transmission) Ball & Ball BBD-4116S.
273 CID 4-Barrel V-8. Overhead valves. Cast iron block. Five main bearings.
Displacement: 273 cubic inches.
Bore and stroke: 3.625 10.5:1.
Compression ratio: 10.5:1.
Horsepower: 235 @ 5200 RPM.
Torque: 200 @ 4000 RPM.
Valve lifters: Mechanical.
Camshaft timing: Intake 248°, Exhaust 248°, Overlap: 26°. Valve Lift: (Intake) 0.415″, (Exhaust) 0.425″.
Carburetor: Carter four barrel: (manual transmission) AFB 4119S (automatic transmission) AFB 4120S. California (manual transmission) AFB 4121S (automatic transmission) AFB 4122S.
1966 Plymouth Barracuda Facts – Chassis Features
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- Wheelbase: 106 inches.
- Overall length: 188.3 inches.
- Overall width: 70.2 inches.
- Overall height: I-6: 53.0 inches; V-8: 53.3 inches.
- Front tread: 55.9 inches.
- Rear tread: 55.6 inches.
- Tires: I-6: 6.50 x 13, V-8: 7.00 x 13. Optional: 6.95 x 14, Formula S: 6.95 x 14 Goodyear Blue Streak.
1966 Plymouth Barracuda Facts – Powertrains
- Three Speed Automatic Transmission Ratios
- All: 1st – 2.45:1, 2nd – 1.45:1, 3rd – 1:1, Reverse – 2.20:1.
- Three Speed Manual Transmission Ratios
- 225 CID I-6: 1st – 2.95:1, 2nd – 1.83:1, 3rd – 1:1, Reverse – 3.80:1.
- 273 CID V-8: 1st – 3.02:1, 2nd – 1.76:1, 3rd – 1:1, Reverse – 3.05:1.
- Four Speed Manual Transmission Ratios
- 225 CID I-6: 1st – 2.66:1, 2nd – 1.91:1, 3rd – 1.39:1, 4th 1:1, Reverse – 3.00:1.
- 273 CID V-8: 1st – 2.66:1, 2nd – 1.91:1, 3rd – 1.39:1, 4th 1:1, Reverse – 3.00:1.
- Rear Gear Standard Ratios
- 225 CID I-6 3-Speed SMT – 3.23:1, Optional 3.55:1.
- 225 CID I-6 3-Speed AMT – 3.23:1, Optional 2.93:1, 3.55:1.
- 273 CID 2-barrel V-8 3-Speed SMT – 2.93:1, Optional 3.23:1, 3.55:1.
- 273 CID 2-barrel V-8 4-Speed SMT – 3.23:1, Optional 3.55:1, 3.91:1.
- 273 CID 2-barrel V-8 3-Speed AMT – 2.93:1, Optional 3.23:1, 3.55:1.
- 273 CID 4-barrel V-8 4-Speed SMT – 2.93:1, Optional 3.23:1, 3.55:1.
- 273 CID 4-barrel V-8 3-Speed AMT – 3.23:1, Optional 2.93:1, 3.55:1, 3.91:1.
1966 Plymouth Barracuda Facts – Powertrain Options
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- 273 CID V-8 Standard in V-8 models with price adjusted over I-6 models.
- 3-speed manual transmission was standard.
- 3-speed Torqueflite automatic transmission, with I-6 ($172), with V-8 ($181).
- 4-speed manual floor shift transmission with I-6 ($86), with V-8 ($179).
- Commando V-8 273 cubic inch 235 horsepower four-barrel engine ($97).
- Crankcase vent system, mandatory on California built cars ($5).
- Sure-Grip positive traction rear axle ($39).
NOTE: Available rear axle gear ratios: (I-6 and V-8) 2.93:1, 3.23:1, 3.55:1, 3.91:1, dependent on transmission and engine choice.
1966 Plymouth Barracuda Facts – Significant Options
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- Air Conditioning ($319).
- Barracuda racing stripes ($31).
- Basic Group – includes left-hand outside rear view mirror, windshield washer, variable speed wipers, and radio ($84).
- Buffed paint ($17).
- Custom spinner wheel covers ($13).
- Heavy-duty shock absorbers and suspension package ($17).
- Formula S Performance Group – includes – suspension package; 273 CID Commando four-barrel V-8 and power brakes ($156).
- Power brakes ($42).
- Power disc brakes ($82).
- Power steering ($80).
- Radio AM, Transaudio ($59).
- Remote control outside rear view mirror ($12).
- Retractable front seat belts ($7).
- Safety padded instrument panel ($16).
- Sport Group – includes – simulated wood grain three-spoke steering wheel; bolt-on-design wheel covers; whitewalls ($80-$100).
- Sports wheel covers, bolt-on design ($34).
- Three-spoke steering wheel ($17).
- Tinted glass, all windows ($29).
- Tinted glass, windshield only ($14).
- Variable speed wipers and washers ($17).
1966 Plymouth Barracuda Downloads and Images
1966 Plymouth Barracuda Facts – Related Document Downloads
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1966 Plymouth Barracuda Brochure
1966 Plymouth Full Line Brochure
1966 Plymouth Barracuda Print Ads
1966 Plymouth Valiant & Barracuda AMA Specifications Sheets
1966 Plymouth Barracuda S Road Test – Car and Drier Magazine
1966 Plymouth Barracuda Facts – Related Images
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1966 Plymouth Barracuda
The 1966 Plymouth Barracuda could be had with a225 CID I-6 or 273 CID V-8 and most options. The 235 HP Commando V-8 was reserved for the Formula S
1966 Plymouth Barracuda Formula S
The 1966 Plymouth Barracuda Formula S came standard with the Commando 235 HP 273 CID V-8 and heavy duty suspension and performance tires and rims.
273 CID V-8 Commando Power Pack
The 273 CID V-8 Commando Power Pack was a huge upgrade for the LA V-8, going far beyond the mere horsepower figures.