Older Camshaft Profiles (Small Block "HE" Hydraulic)

12/31/1969
Archives


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Grind Number Valve Lift 1.5 Valve Lift 1.6 Duration at .050" tappet lift Advertised Duration (at .008" lift) Lobe Separation Angle Opening at .050" tappet lift Closing at .050" tappet lift
HE0410AL INT .407"
EXH .420" 		INT .434"
EXH .448" 		204
212 		247
261 		112 7 ATC
41 BBC 		31 ABC
9 BTC
HE0914AL INT .458"
EXH .470" 		INT .489"
EXH .501" 		208
214 		252
260 		112 5 ATC
42 BBC 		33 ABC
8 BTC
HE1423AL INT .470"
EXH .504" 		INT .501"
EXH .538" 		214
223 		260
270 		112 2 ATC
46.5 BBC 		36 ABC
3.5 BTC
HE1923AL INT .489"
EXH .504" 		INT .522"
EXH .538" 		219
223 		266
270 		112 .5 BTC
46.5 BBC 		38.5 ABC
3.5 BTC
HE2430AL INT .504"
EXH .515" 		INT .538"
EXH .549" 		223
230 		270
276 		110 4.5 BTC
48 BBC 		38.5 ABC
2 ATC
HE3038AL INT .515"
EXH .535" 		INT .549"
EXH .571" 		230
237 		276
286 		110 8 BTC
51.5 BBC 		42 ABC
5.5 ATC
HE3844AL INT .535"
EXH .540" 		INT .571"
EXH .576" 		237
243 		286
290 		108 13.5 BTC
52.5 BBC 		43.5 ABC
10.5 ATC
HE4449AL INT .540"
EXH .557" 		INT .576"
EXH .594" 		243
248 		290
298 		108 16.5 BTC
55 BBC 		46.5 ABC
13 ATC
HE4854AL INT .557"
EXH .570" 		INT .594"
EXH .608" 		248
254 		295
306 		107 20 BTC
57 BBC 		48 ABC
17 ATC
HE5459AL INT .570"
EXH .570" 		INT .608"
EXH .608" 		254
259 		304
310 		107 23 BTC
59.5 BBC 		51 ABC
19.5 ATC

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