Engine Tuneup Specifications

 

Cars

Year              Cu.In. Cylinders Bore and Stroke Brake Horse-
power
Compr. Ratio Compression Pressure Sparkplug Make and Model Timing Mark Location Ignition Timing Degrees BTDC Distributor Point Gap Inch Valve Lash Intake Valve Lash Exhaust
1954 239 3.50x3.10 110 7.2 130 Ch H10 P 3a .015 .019C .019C
1954 256 3.62x3.10 161 7.5 120 Ch H10 P 3a .014-.016 .019C .019C
1955 272 3.63x3.30 162 7.6 130 Ch 870 V 3a .015 .018C .018C
1955 HiP 272 3.63x3.30 182 8.5 140 Ch 870 V 3a .015 .018C .018C
1955 292 3.75x3.30 193 8.1 135 Ch 870 V 3a .015 .018C .018C
1955 HiP 292 3.75x3.30 198 8.5 140 Ch 870 V 3a .015 .018C .018C
1956 272 3.62x3.30 173 8.0 160 Ch 870 V 3a .015 .018C .018C
1956 272 3.62x3.30 176 8.4 165 Ch 870 V 3a .015 .018C .018C
1956 292 3.75x3.30 200 8.0 155 Ch 870 V 3a .015 .018C .018C
1956 292 3.75x3.30 202 8.4 160 Ch 870 V 3a .015 .018C .018C
1956 312 3.80x3.44 210 8.0 155 Ch 870 V 3a .015 .018C .018C
1956 312 3.80x3.44 215 8.4 160 Ch 870 V 3a .015 .018C .018C
1956 312 3.80x3.44 225 9.0 165 Ch 870 V 3a .015 .018C .018C
1957 272 3.62x3.30 190 8.6 160 Ch 870 V 3a .015 .020C .020C
1957 292 3.75x3.30 206 9.1 160 Ch 870 V 3a .015 .020C .020C
1957 312 3.80x3.44 245 9.7 160 Ch 870 V 3a .015 .020C .020C
1958-59 292 3.75x3.30 205 9.1 160 Ch F14Y V 4a .015 .020C .020C
1960-61 292 3.75x3.30 185 8.8 160 Ch F14Y V 3b .015 .018C .018C
1962 292 3.75x3.30 170 8.8 160 AL BF82 V 5e .015 .019C .019C

 

Trucks

Year              Cu.In. Cylinders Bore and Stroke Brake Horse-
power
Compr. Ratio Compr. Pressure Sparkplug Make and Model Timing Mark Location Ignition Timing Degrees BTDC Distributor Point Gap Inch Valve Lash Intake Valve Lash Exhaust
1961 292 MD 3.75x3.30 160 8.0 150 Ch 860 V 6 .014-.016 .019C
.018H
.019C
.018H
1961 292 HD 3.75x3.30 173 8.0 150 Ch F-10 V 6 .014-.016 .019C
.018H
.019C
.018H
1962 292 MD 3.75x3.30 160 8.0 150 AL BTF-6 V 6 .014-.016 .019C
.018H
.019C
.018H
1962 292 HD 3.75x3.30 171 8.0 150 AL BTF-3 V 6 .014-.016 .019C
.018H
.019C
.018H

AL = AutoLite
a = Spark advance for cars with conventional transmission. On cars with auto-transmission 6 BTC
b = Spark advance for cars with conventional transmission. On cars with auto-transmission 10 BTC
C = Cold
Ch = Champion
BTC = Before top center
e = Spark advance for cars with conventional transmission. On cars with auto-transmission 12 BTC
H = Hot
HD = Heavy Duty
HiP = High Performance
MD = Medium Duty
P = Pulley
V = Vibration damper

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