bastarddsm
20+ Year Contributor
- 5,643
- 1,476
- Aug 26, 2003
-
Mendota,
Illinois
Been gonna do this for a while... Finally strapped the degree wheel to my shortblock, installed solid lifters, and measured the cams.
These were sold to me by Delta, as HKS 272 profile, all measurements taken with zero valve lash, installed with AEM TRUE TIMES ZEROED OUT. My block was decked .010", and the head .005".
They are .394" peak lift on intake, and .385" lift on exhaust.
Timing at .001" lift:
IVO: 25 BTDC
IVC: 67 ABDC 272* duration seat to seat
EVO: 72 BBDC
EVC: 24 ATDC 276* Duration seat to seat
Timing at .050" lift
IVO: 6 ATDC
IVC: 36 ABDC 210* duration @ .050" lift
EVO: 35 BBDC
EVC: 5 BTDC 210* duration at .050" lift
Also, I am running JE pistons pn 208478, at zero deck height, with a felpro gasket.
Piston to valve clearance:
Gears fully retarded: (-12*)
Intake: .220"
Exhaust: .070"
Gears zeroed out:
Intake: .150"
Exhaust: .170"
Gears Full Advanced: (12*)
Intake: .050"
Exhaust .250"
My old standard wiseco's have bigger valve reliefs.
These were sold to me by Delta, as HKS 272 profile, all measurements taken with zero valve lash, installed with AEM TRUE TIMES ZEROED OUT. My block was decked .010", and the head .005".
They are .394" peak lift on intake, and .385" lift on exhaust.
Timing at .001" lift:
IVO: 25 BTDC
IVC: 67 ABDC 272* duration seat to seat
EVO: 72 BBDC
EVC: 24 ATDC 276* Duration seat to seat
Timing at .050" lift
IVO: 6 ATDC
IVC: 36 ABDC 210* duration @ .050" lift
EVO: 35 BBDC
EVC: 5 BTDC 210* duration at .050" lift
Also, I am running JE pistons pn 208478, at zero deck height, with a felpro gasket.
Piston to valve clearance:
Gears fully retarded: (-12*)
Intake: .220"
Exhaust: .070"
Gears zeroed out:
Intake: .150"
Exhaust: .170"
Gears Full Advanced: (12*)
Intake: .050"
Exhaust .250"
My old standard wiseco's have bigger valve reliefs.