1974 Firebird Engines

1974 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
L-22 Inline 6 Chevrolet 250
3.88 x 3.53
1 bbl
8.2:1
100@3600
175@1600
D
CJA, CJB, CJC
standard Base
L30 V-8 Pontiac 350 single exhaust
3.88 x 3.75
2 bbl
7.6:1
155@3600
275@2400
M
WA, WL, ZW
standard Esprit, optional Base
L30 V-8 Pontiac 350 dual exhaust
3.88 x 3.75
2 bbl
7.6:1
170@4000
290@2400
N
standard Formula 350, optional Esprit and Base with 682 Dual Exhaust
L65 V-8 Pontiac 400 single exhaust
4.12 x 3.75
2 bbl
8.0:1
175@3600
315@2000
R
-
optional Esprit
L65 V-8 Pontiac 400 dual exhaust
4.12 x 3.75
2 bbl
8.0:1
190@4000 330@2400 P     optional Esprit with 682 Dual Exhaust
L78 V-8 Pontiac 400
4.12 x 3.75
4 bbl
8.0:1
225@4000
430@2400
T
standard Trans Am, optional Formula
L75 V-8 Pontiac 455
4.15 x 4.21
4 bbl
8.0:1
250@4000
380@2800
Y
optional Formula and Trans Am
L67 V-8 Pontiac 455 Super Duty
4.152 x 4.21
4 bbl
8.4:1
290@4000
395@3200
X
optional Formula and Trans Am
*
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