Chevy 396-454ci Big Block 1965-96
ROUGH IDLE, PERFORMANCE USAGE, GOOD UPPER RPM HP, BRACKET RACING, AUTO TRANS W/ 3500+ CONVERTER, MARINE PERFORMANCE, 4000-4400 CRUISE RPM, 10.5 TO 12.0 COMPRESSION RATIO ADVISED.
|Grind Number:||H-306-2 (Replaces CCH-306-2)|
|Operating Range:||3800-6800 RPM|
|Duration Advertised:||306° Intake / 314° Exhaust|
|Duration @ .050'' Lift:||246° Intake / 254° Exhaust|
|Valve Lift w/1.7 Rockers:||.571'' Intake / .585'' Exhaust|
|Lobe Separation Angle:||112°|
|Max Lift Angle:||107° ATDC Intake / 117° BTDC Exhaust|
|Open/Close @.050'' Cam Lift:||Intake - 16° BTDC (opens) / 50° ABDC (closes)|
Exhaust - 64° BBDC (opens) / 10° ATDC (closes)
The most popular OE camshaft type through the late 1980s, hydraulic lifter profiles can provide a power curve that tops out just over 7000 RPM when used with high-performance hydraulic lifters. Also easy to maintain, hydraulic cams range from aggressive (rough idle) to towing (improved bottom-end torque).
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