Part Number/Work Order Number 50233
Engine Application 215-340 BUICK
Grind Number 280HDP
ADVERTISED CAMSHAFT SPECIFICATIONS:
INTAKE:
Duration: 280º
Lift: .488
Clearance Hot: .000
EXHAUST:
Duration: 286º
Lift: .501
Clearance Hot: .000
The specifications listed above are based on a rocker arm ratio of
1.60 IN
1.60 EX
RECOMMENDED VALVE SPRING INFORMATION:
Part #
Single
Dual
Triple
Approximate spring pressure:
valve closed: LBS.
valve open: LBS.
2.0 BTDC
-3.0 BTDC
38.0 ABDC
49.0 BBDC
Timing Events
The information below is for degreeing cam only. Correct only at .050" tappet lift.
INTAKE
Opens: 2.0 BTDC
Closes: 38.0 ABDC
EXHAUST
Opens: 49.0 BBDC
Closes: -3.0 BTDC
LOBE SEPARATION 112º
Duration at .050"
Intake: 220º
Exhaust: 226º
LOBE LIFT
Intake: .305
Exhaust: .313
4 degrees of advance have been ground into this Camshaft.
If using "Lobe Center" method of degreeing, cam should be installed on an intake centerline of: 108º
NOTES:
Cams damaged by excessive spring pressure, over shimming, valve train bind or retainers contacting the
guides are void from warranty. Refer to the "Important Camshaft and Lift Information" booklet included
with each new Crower camshaft to avoid any break-in problems.
