Camshafts

[Guest]

Stock cam specs:

Type : Hydraulic roller, assembled (hollow core with pressed on lobes)
Duration : 196º intake / 196º exhaust (@ 0.050" lift)
Lift @lobe : 0.273"
with 1.6 roller rockers : 0.437"
Lobe Seperation Angle : 112º

Changes made between years:

1994-1999 : cam sync ring was a "missing tooth" design, requiring cam position sensor AC Delco PN 213-294
2000-2002 : cam sync ring was a "single tooth" design, requiring cam position sensor AC Delco PN 213-937
2003-present : cam sync ring is a 50/50 pattern of raised and lowered semi circles, requiring cam position sensor AC Delco PN 213-1533

[SappySE107]

Here are the stock cam specs from napaonline (changed the lift for our stock 1.6:1 rockers)

Cam Lift (Exhaust):.272"
Cam Lift (Intake):.272"
Cam Timing at .050" Lobe Lift (Exhaust Close):12 Deg BTC
Cam Timing at .050" Lobe Lift (Exhaust Open):32 Deg ABC
Cam Timing at .050" Lobe Lift (Intake Close):29 Deg BBC
Cam Timing at .050" Lobe Lift (Intake Open):15 Deg ATC
Degrees Overlap:39 Deg
Duration at .050" Lobe Lift (Exhaust):197 Deg
Duration at .050" Lobe Lift (Intake):197 Deg
Lobe Centerline (Exhaust):111 Deg
Lobe Centerline (Intake):113 Deg
Valve Lash (Exhaust):Hyd.
Valve Lash (Intake):Hyd.
Valve Lift (Exhaust):.430"
Valve Lift (Intake):.430"