LS1 Stock Valve Spring Specs
Drifting
Joined: Feb 2008
Posts: 1,765
Likes: 2
From: St. Clair Shores Mi
are you replacing the springs?
double check these to make sure
VALVETRAIN:Hydraulic Roller
Rocker Arm Ratio = 1.70:1
Valve Lash Net Lash: No Adjustment
Valve Face Angle = 45 degrees
Valve Seat Angle = 46 degrees
Valve Seat RO: 0.05mm / 0.002" Max.
Valve Seat Width (Intake) = 1.02mm / 0.04"
Valve Seat Width (Exhaust) = 1.78mm / 0.07"
Valve Stem:
Clearances:
Intake (P): 0.025-0.066mm / 0.001-0.0026"
Intake (SL): 0.093mm / 0.0037" Max.
Exhaust (P): 0.025-0.066mm / 0.001-0.0026"
Exhaust (SL): 0.093mm / 0.0037" Max
Oil Seal Installed Height = 18.1-19.1mm / 0.712-0.752"
(Measured from VS Shim toTop Edge od Seal Body)
Valve Stem Dia. (P): 7.955-7.976mm / 0.313-0.314"
Valve Stem Dia. (SL) 7.9mm / 0.311 Min.
Valve Spring:
Free Length = 52.9mm / 2.08"
Pressure (Closed) = 340 N @ 45.75mm / 76# @ 1.80"
Pressure (Open) = 980 N @ 33.55mm / 220# @ 1.32"
Installed Height (Intake) = 45.75mm / 1.800"
Installed Height (Exhaust) = 45.75mm / 1.8"
Valve Guide Installed Height = 17.32mm / 0.682"
(Measured from Spring Seat Surface to Top of valve Guide)
Roller Lifter Dia.:17.78mm / 0.700"
Valve Material: Stainless Steel, Hollow Stems, Na filled Exhaust
Net Valve Lift: Intake/Exhaust
'97-00 LS1: 0.472" (11.99mm) / 0.479" (12.17mm)
'01 LS6: 0.525" (13.34mm) / 0.551" (13.33mm)
'02-'04 LS6: 0.525" (14.01mm) / 0.547" (13.91mm)
double check these to make sure
VALVETRAIN:Hydraulic Roller
Rocker Arm Ratio = 1.70:1
Valve Lash Net Lash: No Adjustment
Valve Face Angle = 45 degrees
Valve Seat Angle = 46 degrees
Valve Seat RO: 0.05mm / 0.002" Max.
Valve Seat Width (Intake) = 1.02mm / 0.04"
Valve Seat Width (Exhaust) = 1.78mm / 0.07"
Valve Stem:
Clearances:
Intake (P): 0.025-0.066mm / 0.001-0.0026"
Intake (SL): 0.093mm / 0.0037" Max.
Exhaust (P): 0.025-0.066mm / 0.001-0.0026"
Exhaust (SL): 0.093mm / 0.0037" Max
Oil Seal Installed Height = 18.1-19.1mm / 0.712-0.752"
(Measured from VS Shim toTop Edge od Seal Body)
Valve Stem Dia. (P): 7.955-7.976mm / 0.313-0.314"
Valve Stem Dia. (SL) 7.9mm / 0.311 Min.
Valve Spring:
Free Length = 52.9mm / 2.08"
Pressure (Closed) = 340 N @ 45.75mm / 76# @ 1.80"
Pressure (Open) = 980 N @ 33.55mm / 220# @ 1.32"
Installed Height (Intake) = 45.75mm / 1.800"
Installed Height (Exhaust) = 45.75mm / 1.8"
Valve Guide Installed Height = 17.32mm / 0.682"
(Measured from Spring Seat Surface to Top of valve Guide)
Roller Lifter Dia.:17.78mm / 0.700"
Valve Material: Stainless Steel, Hollow Stems, Na filled Exhaust
Net Valve Lift: Intake/Exhaust
'97-00 LS1: 0.472" (11.99mm) / 0.479" (12.17mm)
'01 LS6: 0.525" (13.34mm) / 0.551" (13.33mm)
'02-'04 LS6: 0.525" (14.01mm) / 0.547" (13.91mm)
Last edited by slothy; Feb 22, 2009 at 01:33 PM.
Thread Starter
Pro
Joined: Dec 2005
Posts: 621
Likes: 2
From: Stillwater Minnesota
Na actually I got new springs. but my old ones are in perfect shape and I've got a few people interested in them. However, I don't know how any numbers so I have no way to tell if they'll work for their application.
Thanks for the specs!
Thanks for the specs!
