Older Camshaft Profiles (Big Block "HE" Hydraulic)

12/31/1969
Archives


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
HE0410BL INT .405"
EXH .420" 		INT .432"
EXH .448" 		204
212 		248
260 		112 7 ATC
41 BBC 		31 ABC
9 BTC
HE0914BL INT .458"
EXH .470" 		INT .489"
EXH .501" 		208
214 		252
260 		112 5 ATC
42 BBC 		33 ABC
8 BTC
HE1423BL INT .470"
EXH .504" 		INT .501"
EXH .538" 		214
223 		260
270 		112 2 ATC
46.5 BBC 		36 ABC
3.5 BTC
HE1923BL INT .489"
EXH .504" 		INT .522"
EXH .538" 		219
223 		266
270 		112 .5 BTC
46.5 BBC 		38.5 ABC
3.5 BTC
HE2330BL INT .504"
EXH .515" 		INT .538"
EXH .549" 		223
230 		272
276 		110 4.5 BTC
48 BBC 		38.5 ABC
2 ATC
HE3038BL INT .515"
EXH .536" 		INT .549"
EXH .572" 		230
238 		276
286 		110 8 BTC
52 BBC 		42 ABC
6 ATC
HE3844BL INT .536"
EXH .540" 		INT .572"
EXH .576" 		238
244 		283
291 		108 14 BTC
53 BBC 		44 ABC
11 ATC
HE4449BL INT .540"
EXH .555" 		INT .576"
EXH .592" 		244
248 		292
298 		108 17 BTC
55 BBC 		47 ABC
13 ATC
HE4854BL INT .556"
EXH .570" 		INT .592"
EXH .608" 		248
254 		295
306 		110 17 BTC
60 BBC 		51 ABC
14 ATC
HE5459BL INT .570"
EXH .570" 		INT .608"
EXH .608" 		254
259 		304
310 		110 20 BTC
62.5 BBC 		55 ABC
16.5 ATC

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