1977 Firebird Engines

1977 Engine Firebird Specifications

                   
Engine ID Stamping
 
UPC Code Type Source Displacement (cubic Inches) Bore & Stroke

Carb

Comp
HP/RPM
Torque/RPM
VIN
Manual
Auto
Usage
LD7 V-6 Buick 231
3.80 x 3.40
2 bbl
8.0:1
105@3200
185@2000
 
standard Base and Esprit
L27 V-8 Pontiac 301 4.00 x 3.00 2 bbl 8.2:1 135@4000 235@2000       optional Base, Esprit. Standard Formula
LG3 V-8 Chevrolet 305 3.74 x 3.48 2 bbl 8.4:1 145@3800 245@2400       optional Base, Esprit. Standard inFormula after June 2, 1977
L76 V-8 Pontiac 350
3.88 x 3.75
4 bbl
7.6:1
170@4000
280@1800
 
optional Base, Esprit, and Formula
L34 V-8 Oldsmobile 350
4.06 x 3.39
4 bbl
8.0:1
170@3800
275@2000
 
optional Base, Esprit, and Formula in California
L78 V-8 Pontiac 400
4.12 x 3.75
4 bbl
7.6:1
180@3600
325@1600
 
standard Trans Am, optional Formula
W72 V-8 Pontiac 400
4.12 x 3.75
4 bbl
8.0:1
200@3600
325@2400*
 
optional Formula and Trans Am
                325@2200**        
L80 V-8 Oldsmobile 403 4.35 x 3.39 4 bbl 8.0:1 185@3600 320@2200       Standard Trans Am and optional Formula in California
*rating with 4 speed manual transmission
**rating with automatic transmission
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