Part Number/Work Order Number S372595-005
Engine Application 401 BUICK NAILHEAD
Grind Number HYDRAULIC TA20-401
ADVERTISED CAMSHAFT SPECIFICATIONS:
INTAKE:
Duration: 280º
Lift: .480
Clearance Hot: .000
EXHAUST:
Duration: 280º
Lift: .480
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.
4.0 BTDC
-4.0 BTDC
36.0 ABDC
44.0 BBDC
Timing Events
The information below is for degreeing cam only. Correct only at .050" tappet lift.
INTAKE
Opens: 4.0 BTDC
Closes: 36.0 ABDC
EXHAUST
Opens: 44.0 BBDC
Closes: -4.0 BTDC
LOBE SEPARATION 110º
Duration at .050"
Intake: 220º
Exhaust: 220º
LOBE LIFT
Intake: .300
Exhaust: .300
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: 106º
NOTES:
106 INT.LC.114EXH.LC.
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.
