1998-2002 Firebird and trans am rpo codes

Engine Mechanical Specifications (LS1)

General Data

Engine Type V8

Displacement 5.7L-5665 cc 346 CID

Bore 99.0 mm 3.898 in

Stroke 92.0 mm 3.622 in

Compression Ratio 10.1:1

Firing Order 1-8-7-2-6-5-4-3

Spark Plug Type 41-931

Spark Plug Gap 1.524 mm 0.06 in

Lubrication System 5.678 Liters 6.0 Quarts

Oil Capacity (without Oil Filter Change) 6.0 Quarts 5.7 Liters

Oil Capacity (with Oil Filter Change) 6.5 Quarts 6.151 Liters

Oil Pressure (Minimum -- Hot) 41.4 kPa at 1,000 engine RPM 6.0 psig at 1,000 engine RPM

Oil Pressure (Minimum- Hot) engine RPM 124.11 kPa at 2,000 engine RPM 165.48 kPa at 4,000 engine RPM

engine RPM 18.0 psig at 2,000 engine RPM 24.0 psig at 4,000 engine RPM

Oil Type Mobil(E) 5W-30 Synthetic or Equivalent

Camshaft

Camshaft End Play 0.025-0.305 mm 0.001-0.012 in

Camshaft Journal Diameter 54.99-55.04 mm 2.164-2.166 in

Camshaft Journal Diameter Out-of-Round 0.025 mm 0.001 in

Camshaft Lobe Lift (Intake) 7.04 mm 0.277 in

Camshaft Lobe Lift (Exhaust) 7.13 mm 0.281 in

Camshaft Runout (Measured at the Intermediate Journals) 0.05 mm 0.002 in

Connecting Rod

Connecting Rod Bearing Bore Diameter 56.505-56.525 mm 2.224-2.225 in

Connecting Rod Bearing Bore Out-of-Round (Production) 0.004 mm 0.00015 in

Connecting Rod Bearing Bore Out-of-Round (Service Limit) 0.008 mm 0.0003 in

Connecting Rod Bearing Clearance (Production) 0.015-0.063 mm 0.0006-0.00248 in

Connecting Rod Bearing Clearance (Production)

Connecting Rod Bearing Clearance (Service Limit) 0.015-0.076 mm 0.0006-0.003 in

Connecting Rod Side Clearance 0.11-0.51 mm 0.00433-0.02 in

Crankshaft

Crankshaft Bearing Clearance (Production) 0.018-0.054 mm 0.0007-0.00212 in

Crankshaft Connecting Rod Journal Diameter (Production) 53.318-53.338 mm 2.0991-2.0999 in

Crankshaft Connecting Rod Journal Diameter (Service Limit) 53.308 mm (Minimum) 2.0987 in (Minimum)

Crankshaft Connecting Rod Journal Taper (Production) 0.005 mm (Maximum for 1/2 of Journal Length) 0.0002 in (Maximum for 1/2 of Journal Length)

Crankshaft Connecting Rod Journal Taper (Service Limit) 0.01 mm (Maximum) 0.0004 in (Maximum)

Crankshaft Connecting Rod Journal Out-of-Round (Production) 0.005 mm 0.0002 in

Crankshaft Connecting Rod Journal Out-of-Round (Service Limit) 0.01 mm 0.0004 in

Crankshaft End Play 0.04-0.2 mm 0.0015-0.0078 in

Crankshaft Main Journal Diameter (Production) 64.993-65.007 mm 2.558-2.559 in

Crankshaft Main Journal Diameter (Service Limit) 64.993 mm (Minimum) 2.558 in (Minimum)

Crankshaft Main Journal Out-of-Round (Production) 0.003 mm 0.000118 in

Crankshaft Main Journal Out-of-Round (Service Limit) 0.008 mm 0.0003 in

Crankshaft Main Journal Taper (Production) 0.01 mm 0.0004 in

Crankshaft Main Journal Taper (Service Limit) 0.02 mm 0.00078 in

Crankshaft Reluctor Ring Runout (Measured 1.0 mm (0.04 in) Below Tooth Diameter) 0.25 mm 0.01 in

Crankshaft Runout (at Rear Flange) 0.05 mm 0.002 in

Crankshaft Thrust Wall Runout 0.025 mm 0.001 in

Crankshaft Thrust Wall Width (Production) 26.14-26.22 mm 1.029-1.032 in

Crankshaft Thrust Wall Width (Service) 26.32 mm (Maximum) 1.036 in (Maximum)

Cylinder Bore

Cylinder Bore Diameter 99.0-99.018 mm 3.897-3.898 in

Cylinder Bore Taper Thrust Side 0.018 mm (Maximum) 0.0007 in (Maximum)

Cylinder Head Engine Block Deck Flatness (Measured within a 152.4 mm (6.0 in) area) 0.11 mm 0.004 in

Cylinder Head Engine Block Deck Flatness (Measuring the Overall Length of the Cylinder Head) 0.22 mm 0.008 in

Cylinder Head Exhaust Manifold Deck Flatness 0.22 mm 0.008 in

Cylinder Head Intake Manifold Deck Flatness 0.22 mm 0.008 in

Cylinder Head Height (Measured from the Cylinder Head Deck to the Valve Rocker Arm Cover Seal Surface) 120.2 mm (Minimum) 4.732 in (Minimum)

Engine Block

Camshaft Bearing Bore Diameters 55.063-55.088 mm 2.168-2.169 in

Engine Block Cylinder Head Deck Surface Flatness (Measured within a 152.4 mm (6.0 in) area) 0.11 mm 0.004 in

Engine Block Cylinder Head Deck Surface Flatness (Measuring the Overall Length of the Block Deck) 0.22 mm 0.008 in

Engine Block Cylinder Head Deck Height (Measuring from the Centerline of Crankshaft to the Deck Face) 234.57-234.82 mm 9.235-9.245 in

Main Bearing Bore Diameter (Production) 69.871-69.889 mm 2.750-2.751 in

Valve Lifter Bore Diameter (Production) 21.417-21.443 mm 0.843-0.844 in

Intake Manifold

Intake Manifold Cylinder Head Deck Flatness (Measured at Gasket Sealing Surfaces) 0.5 mm 0.02 in

Oil Pan and Front/Rear Cover Alignment

Oil Pan to Rear of Engine Block Alignment (at Transmission Bellhousing Mounting Surface) 0.0-0.25 mm (Maximum) 0.0-0.01 in (Maximum)

Front Cover Alignment (at Oil Pan Surface) 0.0-0.5 mm 0.0-0.02 in

Rear Cover Alignment (at Oil Pan Surface) 0.0-0.5 mm 0.0-0.02 in

Piston

Piston Outside Diameter (at Size Point) 98.964-98.982 mm 3.8962-3.8969 in

Piston to Bore Clearance (Production) 0.018-0.054 mm 0.0007-0.00212 in

Piston to Bore Clearance (Service Limit) 0.018-0.054 mm (Maximum) 0.0007-0.00212 in (Maximum)

Piston Pin

Piston Pin Clearance to Piston Bore (Production) 0.01-0.02 mm 0.0004-0.00078 in

Piston Pin Clearance to Piston Bore (Service Limit) 0.01-0.02 mm (Maximum) 0.0004-0.00078 in (Maximum)

Piston Pin Diameter 23.997-24.0 mm 0.9447-0.9448 in

Piston Pin Fit in Connecting Rod 0.02-0.043 mm (Interference) 0.00078-0.00169 in (Interference)

Piston Rings

Piston Compression Ring End Gap (Production Top) (Measured in Cylinder Bore) 0.23-0.38 mm 0.009-0.0149 in

Piston Compression Ring End Gap (Production--2nd) (Measured in Cylinder Bore) 0.44-0.64 mm 0.0173-0.0251 in

Piston Oil Ring End Gap (Production) (Measured in Cylinder Bore) 0.18-0.69 mm 0.007-0.0271 in

Piston Compression Ring End Gap (Service-Top) (Measured in Cylinder Bore) 0.23-0.38 mm (Maximum) 0.009-0.01496 in (Maximum)

Piston Compression Ring End Gap (Service--2nd)(Measured in Cylinder Bore) 0.44-0.64 mm (Maximum) 0.0173-0.0251 in (Maximum)

Piston Oil Ring End Gap (Service Limit) (Measured in Cylinder Bore) 0.18-0.69 mm (Maximum) 0.007-0.0271 in (Maximum)

Piston Compression Ring Groove Clearance (Production--Top) 0.04-0.085 mm 0.00157-0.003346 in

Piston Compression Ring Groove Clearance (Production--2nd) 0.04-0.08 mm 0.00157-0.003149 in

Piston Oil Ring Groove Clearance (Production) 0.01-0.22 mm 0.0004-0.00866 in

Piston Oil Ring Groove Clerance (Production)

Piston Compression Ring Groove Clearance (Service--Top) 0.04-0.085 mm (Maximum) 0.00157-0.003346 in (Maximum)

Piston Compression Ring Groove Clearance (Service--2nd) 0.04-0.08 mm (Maximum) 0.00157-0.003149 in (Maximum)

Piston Oil Ring Groove Clearance (Service Limit) 0.01-0.22 mm (Maximum) 0.0004-0.00866 in (Maximum)

Valve System

Valve Lifter Hydraulic Roller

Valve Rocker Arm Ratio 1.70:1

Valve Lash Net Lash--No Adjustment

Valve Face Angle 45 degrees

Valve Seat Angle 46 degrees

Valve Seat Runout 0.05 mm (Maximum) 0.002 in (Maximum)

Valve Seat Width (Intake) 1.02 mm 0.04 in

Valve Seat Width (Exhaust) 1.78 mm 0.07 in

Valve Stem Clearance (Production--Intake) 0.025-0.066 mm 0.001-0.0026 in

Valve Stem Clearance (Production--Intake) 0.025-0.066 mm 0.001-0.0026 in

Valve Stem Clearance (Production--Exhaust) 0.025-0.066 mm 0.001-0.0026 in

Valve Stem Clearance (Service--Intake) 0.093 mm (Maximum) 0.0037 in (Maximum)

Valve Stem Clearance (Service--Exhaust) 0.093 mm (Maximum) 0.0037 in (Maximum)

Valve Stem Diameter (Production) 7.955-7.976 mm 0.313-0.314 in

Valve Stem Diameter (Service) 7.9 mm (Minimum) 0.311 in (Minimum)

Valve Spring Free Length 52.9 mm 2.08 in

Valve Spring Pressure (Closed) 340 N at 45.75 mm 76 lb at 1.80 in

Valve Spring Pressure (Open) 980 N at 33.55 mm 220 lb at 1.32 in

Valve Spring Installed Height (Intake) 45.75 mm 1.8 in

Valve Spring Installed Height (Exhaust) 45.75 mm 1.8 in

Valve Lift (Intake) 11.99 mm 0.472 in

Valve Lift (Exhaust) 12.15 mm 0.479 in

Valve Guide Installed Height (Measured from the Cylinder Head Spring Seat Surface to the Top of the Valve Guide) 17.32 mm 0.682 in

Valve Stem Oil Seal Installed Height (Measured from the ValveSpring Shim to Top Edge of Seal Body) 18.1-19.1 mm 0.712-0.752 in

Approximate Fluid Capacities

Cooling System
Automatic Transmission 11.6 Liters 12.3 quarts
Manual Transmission 11.9 Liters 12.6 quarts

Engine Crankcase
With Filter 6.1 Liters 6.5 quarts
Without Filter 5.7 Liters 6.0 quarts

Fuel Tanks (Total) 72.3 Liters 19.1 gallons

Rear Axle Differential
Lubricant 1.6 Liters 1.69 quarts
Limited-Slip Additive 118 Milliliters 4.0 ounces

Transmission Fluid
Drain & Fill (Automatic Transmission) 4.7 Liters 5.0 quarts
Overhaul (Automatic Transmission) 10.2 Liters 10.8 quarts
Overhaul (Manual Transmission) 3.9 Liters 4.1 quarts

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