1980 Pontiac Firebird Trans Am 301 CID T/A 4.9
Automatic Transmission Engine Specifications

Engine Code	YN, YR
Engine RPO	L37
Displacement	301 CID
Bore x Stroke	4.00" x 3.00"
Compression Ratio	8.0:1
Horsepower @ RPM	155@4400
Torque (Lb/Ft) @ RPM	2450@xxxx
Head Casting	01
Carburetor	4-bbl
Carburetor	17080270
Camshaft
Part #	10012185
Lift, I/E	/
Rocker Arm Ratio	1.5:1
Duration I/E - Degrees	NA / NA
Overlap - Degrees	NA
Intake Valve Dia -	1.72"
Exhaust Valve - Dia	1.50"
Distributor	1103407