LS2 Valve Spring Specs
Le Mans Master
Joined: Jan 2005
Posts: 5,611
Likes: 5
From: Thousand Oaks California
Valve System
Valves - Valve Face Angle
45 degrees
Valves - Valve Face Width
1.25 mm
0.05 in
Valves - Valve Lash
Net Lash - No Adjustment
Valves - Valve Lift - Intake
13.23 mm
0.52 in
Valves - Valve Lift - Exhaust
13.22 mm
0.52 in
Valves - Valve Seat Angle
46 degrees
Valves - Valve Seat Runout
0.05 mm
0.002 in
Valves - Valve Seat Width - Exhaust
1.78 mm
0.07 in
Valves - Seat Width - Intake
1.02 mm
0.04 in
Valves - Valve Stem Diameter - Production
7.955-7.976 mm
0.313-0.314 in
Valves - Valve Stem Diameter - Service
7.95 mm
0.313 in
Valves - Valve Stem-to-Guide Clearance - Production - Intake
0.025-0.066 mm
0.001-0.0026 in
Valves - Valve Stem-to-Guide Clearance - Service - Intake
0.093 mm
0.0037 in
Valves - Valve Stem-to-Guide Clearance - Production - Exhaust
0.025-0.066 mm
0.001-0.0026 in
Valves - Valve Stem-to-Guide Clearance - Service - Exhaust
0.093 mm
0.0037 in
Rocker Arms - Valve Rocker Arm Ratio
1.70:1
Valve Springs - Valve Spring Free Length
52.9 mm
2.08 in
Valve Springs - Valve Spring Installed Height
45.75 mm
1.8 in
Valve Springs - Valve Spring Load - Closed
340 N at 45.75 mm
76 lb at 1.8 in
Valve Springs - Valve Spring Load - Open
980 N at 33.55 mm
220 lb at 1.32 in
Valves - Valve Face Angle
45 degrees
Valves - Valve Face Width
1.25 mm
0.05 in
Valves - Valve Lash
Net Lash - No Adjustment
Valves - Valve Lift - Intake
13.23 mm
0.52 in
Valves - Valve Lift - Exhaust
13.22 mm
0.52 in
Valves - Valve Seat Angle
46 degrees
Valves - Valve Seat Runout
0.05 mm
0.002 in
Valves - Valve Seat Width - Exhaust
1.78 mm
0.07 in
Valves - Seat Width - Intake
1.02 mm
0.04 in
Valves - Valve Stem Diameter - Production
7.955-7.976 mm
0.313-0.314 in
Valves - Valve Stem Diameter - Service
7.95 mm
0.313 in
Valves - Valve Stem-to-Guide Clearance - Production - Intake
0.025-0.066 mm
0.001-0.0026 in
Valves - Valve Stem-to-Guide Clearance - Service - Intake
0.093 mm
0.0037 in
Valves - Valve Stem-to-Guide Clearance - Production - Exhaust
0.025-0.066 mm
0.001-0.0026 in
Valves - Valve Stem-to-Guide Clearance - Service - Exhaust
0.093 mm
0.0037 in
Rocker Arms - Valve Rocker Arm Ratio
1.70:1
Valve Springs - Valve Spring Free Length
52.9 mm
2.08 in
Valve Springs - Valve Spring Installed Height
45.75 mm
1.8 in
Valve Springs - Valve Spring Load - Closed
340 N at 45.75 mm
76 lb at 1.8 in
Valve Springs - Valve Spring Load - Open
980 N at 33.55 mm
220 lb at 1.32 in
