Engine profile

1975 Plymouth Road Runner engine family

Chrysler LA-series 318 and 360 V8 or B-series 400 V8 · 400 cubic inches · Plymouth

Engines and Induction summarized from reviewed factory and marque references. 1975 Plymouth Road Runner

Engine Summary

Manufacturer: Plymouth
Family: Chrysler LA-series 318 and 360 V8 or B-series 400 V8
Displacement: 400 cubic inches

Also Known As

1975 E44 318 two-barrel V81975 E57 360 two-barrel V81975 E58 360 four-barrel V81975 E63 400 two-barrel V81975 E64 400 four-barrel V81975 E68 400 four-barrel high-performance V8

Identification reference

Engine Details

Source-backed component numbers, codes, stampings, and application notes.

E44 318 two-barrel V8

Value: 318 cu in; 8.5:1; 150 hp and 255 lb-ft federal intermediate rating, or 135 hp and 245 lb-ft in California
Application: Standard Road Runner engine; three-speed manual or optional TorqueFlite
Type: engine assembly / specification
Car pages: 1975 Plymouth Road Runner

Sources: 1975 Plymouth Dealership Data Book: Engineering , 1975 Plymouth Dealership Data Book: Fury and Road Runner , 1975 Plymouth full-line brochure

E57 360 two-barrel V8

Value: 360 cu in; 8.4:1; single exhaust; 180 hp and 290 lb-ft federal rating
Application: Optional outside California with TorqueFlite
Type: engine assembly / specification
Car pages: 1975 Plymouth Road Runner

Sources: 1975 Plymouth Dealership Data Book: Engineering , 1975 Plymouth Dealership Data Book: Fury and Road Runner , 1975 Plymouth full-line brochure

E58 360 four-barrel V8

Value: 360 cu in; 8.4:1; single exhaust; 190 hp and 270 lb-ft California heavy-duty rating
Application: Optional California Road Runner path with TorqueFlite
Type: engine assembly / specification
Car pages: 1975 Plymouth Road Runner

Sources: 1975 Plymouth Dealership Data Book: Engineering , 1975 Plymouth Dealership Data Book: Fury and Road Runner , 1975 Plymouth full-line brochure

E63 400 two-barrel V8

Value: 400 cu in; 8.2:1; single exhaust; 165 hp and 295 lb-ft federal intermediate rating
Application: Optional outside California with TorqueFlite
Type: engine assembly / specification
Car pages: 1975 Plymouth Road Runner

Sources: 1975 Plymouth Dealership Data Book: Engineering , 1975 Plymouth Dealership Data Book: Fury and Road Runner , 1975 Plymouth full-line brochure

E64 400 four-barrel V8

Value: 400 cu in; 8.2:1; single exhaust; 190 hp and 290 lb-ft federal, or 185 hp and 285 lb-ft California
Application: Optional with TorqueFlite
Type: engine assembly / specification
Car pages: 1975 Plymouth Road Runner

Sources: 1975 Plymouth Dealership Data Book: Engineering , 1975 Plymouth Dealership Data Book: Fury and Road Runner , 1975 Plymouth full-line brochure

E68 400 four-barrel high-performance V8

Value: 400 cu in; 8.2:1; dual-snorkel induction, dual exhaust; 235 hp and 320 lb-ft
Application: Late-introduction option outside California with TorqueFlite
Type: engine assembly / specification
Car pages: 1975 Plymouth Road Runner

Sources: 1975 Plymouth Dealership Data Book: Engineering , 1975 Plymouth Dealership Data Book: Fury and Road Runner , 1975 Plymouth full-line brochure

Cars Using This Engine

1 linked car page.

RM21 two-door hardtop on the 115-inch-wheelbase Plymouth B-body

1975 Plymouth Road Runner

RM21 two-door hardtop on a 115-inch wheelbase

Source Trail

Chrysler Canada Ltd. via XR793 1975 Plymouth full-line brochure

Auto Color Library 1975 Plymouth paint chips

The 1970 Hamtramck Registry Library 1975 Plymouth dealership literature archive

Plymouth Division via The 1970 Hamtramck Registry 1975 Plymouth Dealership Data Book: Fury and Road Runner

Plymouth Division via The 1970 Hamtramck Registry 1975 Plymouth Dealership Data Book: Engineering

Automobile-Catalog 1975 Plymouth Road Runner production table

Hagerty Valuation Tools 1975 Plymouth Road Runner model overview

Mopar Connection Magazine Dennis Strausser's one-year-only 1975 Plymouth Road Runner