1970 Plymouth Road Runner Superbird
B-body · Required for NASCAR homologation. 1935 built to qualify. Ext... · The winged warrior — built to win Daytona, impossible to ignore
Ultra Rare
Production & Overview
Total Production
1,935
Original MSRP
$4,298
Assembly Plants
Lynch Road, MI (final assembly after Clairton modification)
Wheelbase
116 inches
Body Styles
2-Door Hardtop
Curb Weight
3,785 lbs
Notable Packages & Production
Street Hemi — 426 Hemi
5-10x base
135
produced
440 Six Pack — 440-6bbl
2-3x base
308
produced
Available Engines
440-4bbl 440ci — V8
Standard 440
375 hp
440-6bbl 440ci — V8
440 Six Pack — three 2-barrel carbs
390 hp
426 Hemi 426ci — V8
Street Hemi — most valuable Superbird engine. 135 produced.
425 hp
Buyer Checklist
⚠ Clone warning: Hemi non-matching loses 70%+. All Superbirds are valuable regardless.. Always verify with cowl tag, engine stamp, and registry before purchase.
Verify fender tag — confirms all Superbird options
Confirm all three aerodynamic modifications are original: nose, flush window, and wing
Wing posts should be original metal — reproductions are detectable
Check nose piece for correct aluminum construction
Hemi cars — verify engine pad stamp and all Hemi-specific components
Inspect B-body floor pans and frame rails for rust
Verify correct Superbird-specific badging and Road Runner bird cartoon
Contact Galen Govier for official Chrysler production records
Check for correct TorqueFlite or 4-speed for engine combination
Road test: Hemi idle is distinctive and unmistakable
Known Problem Areas
Reproduction wing and nose pieces — common fraud
Non-Superbird Road Runners converted — nose/wing added later
Floor pan rust on B-body
Wing post rust where it meets the body
Hemi clone cars — very common and very costly fraud
Paint color changes from original
What Drives Value
↑ Increases Value
Hemi with full documentation — values $500,000 to $1.5M+
440 Six Pack with fender tag and broadcast sheet
Original rare color (Lemon Twist, Vitamin C)
Numbers-matching engine regardless of type
Galen Govier certified
↓ Decreases Value
Converted Road Runner (not factory Superbird)
Reproduction aero parts
Hemi claims without Govier certification
Heavy rust
Restoration Overview
Difficulty
Very High — unique aero parts require specialist knowledge
Parts Availability
Poor for Superbird-specific parts — repros available but costly
Driver Quality Cost
$150,000 – $300,000
Show Quality Cost
$300,000 – $600,000
Key Suppliers
Galen Govier (authentication) · Year One (B-body parts) · Classic Industries
Pop Culture & Legacy
Richard Petty drove the Superbird to the 1970 NASCAR season title
So extreme NASCAR banned aerodynamic cars — it was too fast
One of the most recognizable American muscle cars ever built
Other Plymouth Road Runner Superbird Years