Engine profile

1981 Pontiac Firebird Trans Am engine family

Pontiac 301 V8 and Chevrolet 305 V8 · 301 cubic inches · Pontiac

Engines and Induction summarized from reviewed factory and marque references. 1981 Pontiac Firebird Trans Am

Engine Summary

1981 RPO L37 Pontiac 301 V81981 RPO LU8 Turbo Pontiac 301 V81981 RPO LG4 Chevrolet 305 V8

Identification reference

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

Value: 301 cu in; 8.1:1; four-barrel; 150 net hp at 4,000 rpm and 245 lb-ft at 2,000 rpm
Application: Standard Trans Am engine with VIN W, MX1 automatic, and 2.56:1 axle; 3.08 optional
Type: engine assembly / specification
Car pages: 1981 Pontiac Firebird Trans Am

Value: 305 cu in; 8.6:1; four-barrel; 150 net hp at 3,800 rpm and 240 lb-ft at 2,400 rpm
Application: Regular United States Trans Am application with VIN H, MM4 four-speed manual, and 3.42:1 axle; Canadian automatic exceptions remain unresolved
Type: engine assembly / specification
Car pages: 1981 Pontiac Firebird Trans Am

Value: 301 cu in; 7.5:1; four-barrel draw-through turbo; 200 net hp at 4,000 rpm and 340 lb-ft at 2,000 rpm
Application: Optional Trans Am engine with VIN T, MX1 automatic, 3.08:1 axle, and required C60 air conditioning
Type: engine assembly / specification
Car pages: 1981 Pontiac Firebird Trans Am

1 linked car page.

Two-door four-passenger Trans Am W87 sport coupe with fixed roof or optional CC1 removable hatch panels

Two-door four-passenger Trans Am W87 sport coupe

Pontiac Motor Division via Dezo's Garage 1981 Pontiac full-line factory brochure