Crane Cams 134241 Details

Chevy 396-454ci Big Block 1965-96

*Note: In order to use these camshafts in 1965-66 396/427ci blocks, it is necessary to machine a 3/16'' wide x 7/64'' deep groove in the rear main journal of the cam to allow oil flow to the top of the engine.

FAIR IDLE, MODERATE PERFORMANCE USAGE, GOOD MID-RANGE HP, MILD BRACKET RACING, AUTO TRANS W/2500+ CONVERTER, 3200-3600 CRUISE RPM, 9.5 TO 11.5 COMPRESSION RATIO ADVISED.
1980 AND LATER ENGINES SHOULD USE CRANE 270-99837 SPRINGS AND 270-99957 RETAINERS AT AN ASSEMBLY HEIGHT OF 1.828''.

Grind Number:	H-286-2 (Replaces CCH-286-2)
Operating Range:	2500-5500 RPM
Duration Advertised:	286° Intake / 296° Exhaust
Duration @ .050'' Lift:	226° Intake / 236° Exhaust
Valve Lift w/1.7 Rockers:	.534'' Intake / .553'' Exhaust
Lobe Separation Angle:	112°
Max Lift Angle:	107° ATDC Intake / 117° BTDC Exhaust
Open/Close @.050'' Cam Lift:	Intake - 6° BTDC (opens) / 40° ABDC (closes) Exhaust - 55° BBDC (opens) / 1° ATDC (closes)