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 CRANE 138291 BBC BILLET ROLLER CAMR-274/4334-2S-10
138291 Click to enlarge

BBC BILLET ROLLER CAMR-274/4334-2S-10
CRANE 138291

 CRANE 138291



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CRANE 138291
Part Number:138291Grind Number:R-274/4334-2S-10
Engine Identification:
Start Yr.End Yr.MakeCylDescription
1967UpCHEVROLET8COMPETITION ONLY, BRACKET RACING, GOOD UPPER RPM TORQUE AND HP, SUPER PRO, SUPER GAS, SUPER COMP, AUTO TRANS W/ RACE CONVERTER, 12.5 MINIMUM COMPRESSION RATIO ADVISED. BASIC RPM 4600-8000
Engine SizeConfiguration
396-454 C.I.V
Valve Setting:Intake.026Exhaust.026HOT
Lift:Intake @Cam4334@Valve737All Lifts are based
on zero lash and theoretical rocker arm ratios.
Exhaust @ Cam427@Valve726
Rocker Arm Ratio1.7
CamTiming:TAPPET@.0162
Lift:OpensClosesADV Duration
Intake49 BTDC85 ABDC314
Exhaust94 BBDC50 ATDC324
Spring Requirements: Triple Dual Outer Inner
Part Number99874
LoadsClosed200LBS@1.938or1 15/16
Open620LBS@1.238
Recommended RPM range with matching components
Minimum RPM4600
Maximum RPM8000
Valve Float8400
CamTiming:TAPPET@.050
Lift:OpensClosesMax LiftDuration
Intake30 BTDC64 ABDC105274
Exhaust75 BBDC29 ATDC115284
Remarks:
Notes:

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