CAM LOBE PROFILE CATALOG - Crane Cams Australia

SPECIALIZED PROFILES
PROFILE CODE
DUR. AT .050”/
VALVE LIFT
ADVERTISED DUR.
AT TAPPET LIFT
DEG. IN.
DUR. AT
.300”
VALVE LIFT
VALVE LIFT AT
TOP DEAD CENTER CAM LIFT
104 DEG.
INTAKE
114 DEG.
EXHAUST
GROSS VALVE LIFT
WITH ZERO LASH
ENGINE SPECIFIC PROFILES FOR TRANSLATING FOLLOWER SOHC AND DOHC APPLICATIONS
These profiles may be used in other applications. Consult with the Crane Cams technical staff for recommendations.
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DESIGN
BASE CIRCLE
RADIUS
ACU
Acura DOHC 1.8L 4-valve B18A1 I-4, mechanical series. Recommended
lash is .004" intake and .008" exhaust. (Crane Cams 101 prefix)
ACU-202/400INT 228 .0200 97 .041 .020 .224 .400 0.551
ACU-206/400INT 232 .0200 99 .047 .023 .224 .400 0.551
ACU-204/388EXH 242 .0200 94 .044 .025 .218 .388 0.551
ACU-208/388EXH 246 .0200 95 .050 .027 .218 .388 0.551
ACU-212/388EXH 250 .0200 97 .056 .031 .218 .388 0.551
ACU-218/433 246 .0200 114 .067 .036 .240 .433 0.551
ACU-226/453 254 .0200 125 .083 .047 .250 .453 0.551
ACU-234/472 262 .0200 134 .101 .060 .260 .472 0.551
GMHEC Chevrolet / GM DOHC 2.2L 4-valve Ecotec I-4, hydraulic series.
GM-197/428 238 .0060 101 .039 .008 .252 .428 0.590
GM-201/440 242 .0060 106 .045 .011 .259 .428 0.590
GM-224/475 266 .0060 128 .090 .033 .280 .475 0.590
GMMEC
Chevrolet / GM DOHC 2.2L 4-valve Ecotec I-4, mechanical series. Recommended lash
is .007" intake and .009" exhaust, set between the follower and base circle.
GM-236/520 261 .0200 139 .102 .063 .3067 .520 0.590
GM-246/520 271 .0200 147 .126 .081 .3067 .520 0.590
GM-250/502 275 .0200 148 .136 .089 .2960 .502 0.590
GM-256/520 281 .0200 155 .152 .102 .3067 .520 0.590
GM-266/520 291 .0200 163 .178 .126 .3067 .520 0.590
GM-266/550 294 .0200 160 .167 .116 .3243 .550 0.590
GM-280/540 308 .0200 169 .198 .149 .3180 .540 0.590
GM-290/540 318 .0200 178 .223 .172 .3180 .540 0.590
CHR1
Chrysler SOHC 2.0L 4-valve I-4, hydraulic roller series. Lobes designed for a base
radius of .550” or less, and require Ferrea lash caps #C10008. (Crane 158 prefix)
CHR-196/335INT 242 .0060 60 .021 .216 .335 0.591
CHR-204/355INT 250 .0060 76 .031 .230 .355 0.583
CHR-216/355INT 262 .0060 80 .051 .230 .355 0.583
CHR-226/355INT 272 .0060 84 .072 .230 .355 0.583
CHR-232/400INT 280 .0060 108 .080 .245 .400 0.550
CHR-236/440INT 280 .0060 120 .091 .269 .440 0.542
CHR-200/315EXH 250 .0060 40 .020 .207 .315 0.591
CHR-212/345EXH 262 .0060 72 .031 .228 .345 0.585
CHR-226/345EXH 282 .0060 76 .047 .228 .345 0.585
CHR-230/400EXH 285 .0060 104 .052 .257 .400 0.550
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