1970 Plymouth GTX
B-body · Convertible dropped after 1969. New Air Grabber hood scoop o... · The high-water mark of Plymouth's gentleman muscle car
Ultra Rare
Production & Overview
Total Production
7,748
Original MSRP
N/A
Assembly Plants
Lynch Road, MI · Hamtramck, MI
Wheelbase
116 inches
Body Styles
2-Door Hardtop
Curb Weight
3,640 lbs
Notable Packages & Production
Street Hemi — 426 Hemi
8-15x base
72
produced
440 Six Pack — 440+6
3-5x base
Unknown
produced
Air Grabber Hood — Air Grabber
1.3x
Unknown
produced
Available Engines
440 Super Commando 440ci — V8
Standard engine
375 hp
440+6 440ci — V8
440 Six Pack — three 2-barrel Holley carbs
390 hp
426 Hemi 426ci — V8
Street Hemi — 72 produced in 1970 GTX
425 hp
Buyer Checklist
⚠ Clone warning: Hemi non-matching loses 75%+. Always verify with cowl tag, engine stamp, and registry before purchase.
Decode fender tag for all options
Hemi — verify Galen Govier records and engine pad
Check for Air Grabber hood operation
Inspect B-body rust points — floor pans, frame rails
Verify correct 440 or Hemi exhaust
Check broadcast sheet under seat
Verify correct rear axle ratio for engine
Road test all systems
Check for high-performance car abuse on rear axle
Inspect frame rails thoroughly
Known Problem Areas
Hemi fraud
B-body rust — floors and frame
Six Pack carburetor issues
Air Grabber mechanism failure
High performance driving damage
What Drives Value
↑ Increases Value
Hemi — only 72 built, values $400,000+
440 Six Pack with Air Grabber documented
Numbers-matching 440
Rare bright color
↓ Decreases Value
Hemi fraud
Non-matching numbers
Rust in structure
Six Pack converted from single carb
Restoration Overview
Difficulty
Medium-High
Parts Availability
Good
Driver Quality Cost
$28,000 – $55,000
Show Quality Cost
$65,000 – $130,000
Key Suppliers
Year One · Classic Industries · Mopar Performance
Pop Culture & Legacy
The GTX at its absolute performance peak before emissions regulations
Strong Mopar faithful following
Regular presence at Carlisle and Mopar National events
Other Plymouth GTX Years