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Watch a restored 1973 plymouth barracuda filmed by #moparbro fred_eazy25 at the lagoon city classic car show.

Here’s a full breakdown of the 1973 Plymouth Barracuda 340, a classic Mopar muscle car known for its aggressive style and respectable small-block performance.

🔰 Overview
Model Year: 1973

Make & Model: Plymouth Barracuda 340

Body Style: 2-door coupe (E-body platform)

Trim Levels: Base, 'Cuda (performance trim), AAR dropped after 1970

Platform: Chrysler E-body

Assembly Plants: Hamtramck, MI / Los Angeles, CA

🔧 Engine – 340 CID V8 (5.6L)
Type: LA-series small-block V8

Displacement: 340 cubic inches (5.6 liters)

Bore x Stroke: 4.04" x 3.31"

Compression Ratio: ~8.5:1 (due to emissions changes in '73)

Horsepower: ~240 hp @ 4,800 rpm (net, SAE)

Torque: ~290 lb-ft @ 3,600 rpm

Carburetor: 4-barrel Carter AVS carburetor

Fuel: Premium unleaded recommended

➡️ Earlier versions of the 340 (1970–1972) made closer to 275 hp SAE gross, but power dropped slightly in 1973 due to emissions controls and the switch to SAE net ratings.

⚙️ Transmission Options
3-speed manual (standard)

4-speed manual (optional)

3-speed TorqueFlite automatic (optional)

🔩 Drivetrain & Suspension
Rear Axle: 8.75" Chrysler (typically with 3.23 or 3.55 gears)

Differential: Sure-Grip limited-slip available

Suspension (Front): Torsion bars with sway bar

Suspension (Rear): Leaf springs

Brakes:

Front: Disc (standard on 340)

Rear: Drum

Steering: Power steering optional

📏 Dimensions & Weight
Wheelbase: 108.0 in

Length: ~192.8 in

Width: 74.2 in

Height: 50.9 in

Curb Weight: ~3,280 – 3,400 lbs (varies with options)

🛞 Wheels & Tires
Factory Wheels: Rallye or Road Wheels (14")

Tires: F70-14 bias-ply or optional white-letter performance radials

🎨 Exterior Styling – 1973 Specifics
Redesigned front grille and taillights (split grille with vertical bars)

Larger rubber bumper guards (federal safety mandate)

'Cuda badging if equipped with performance package

Optional shaker hood dropped after 1971; dual-scooped Rallye hood optional

Multiple stripe packages, including billboard or hockey stick side stripes

🛋️ Interior Features
Bucket seats standard (bench optional)

Optional Rallye Gauge Cluster with 150 mph speedometer & tach

Center console available with automatic or 4-speed

AM/FM stereo optional, as well as rear speakers

Air conditioning available (rare on 340s)

Color Options: Wide palette with High Impact colors (e.g., Lemon Twist, Plum Crazy, etc.)

🏁 Performance (Stock)
0–60 mph: ~6.8–7.2 seconds

1/4 mile: ~15.0 seconds @ 92–95 mph

Top Speed: ~125 mph

Fuel Economy: 11–13 mpg (real-world average)

🔥 Notable Options & Packages
Rallye Appearance Package

Performance Axle Package (3.55 or 3.91 gears with Sure-Grip)

Rallye Instrument Cluster

Dual Exhaust with Chrome Tips

Rear Spoiler (Go Wing)

Slap-Stik Shifter (auto trans)

🧰 Common Mods Today
Headers + dual exhaust

Aluminum intake and Holley carb upgrade

MSD ignition

Cam swap (Comp Cams XE268 is popular)

Suspension upgrades (QA1, Hotchkis)

15" Rallye or aftermarket wheels

Disc brake conversion (rear)

💵 Current Market Value (2025)
Project cars: $8,000 – $15,000

Drivers (decent condition): $25,000 – $40,000

Fully restored/original: $55,000 – $75,000+

High-option 340 'Cudas (4-speed, Rallye, stripe, color combos): $80,000+



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