Engine Mechanical Specifications (RPO LH6 VIN M)
Cylinder HeadCylinder Head Deck Height - Measuring from the Centerline of Crankshaft to the Deck Face 234.57-234.82 mm 9.235-9.245 in
Cylinder Head Deck Surface Flatness - Measured Within a 152.4 mm (6.0 in) Area 0.11 mm 0.004 in
Cylinder Head Deck Surface Flatness - Measuring the Overall Length of the Block Deck 0.22 mm 0.008 in
Camshaft Sprocket Bolt - First Pass 75 N.m 55 lb ft
Camshaft Sprocket Bolt - Final Pass 50 degrees
Cylinder Head Bolt
Important: The cylinder head bolts are of a torque-to-yield design and are NOT to be reused.
Cylinder Head M8 Bolts - in Sequence 30 N.m 22 lb ft
Cylinder Head M11 Bolts - First Pass in Sequence 30 N.m 22 lb ft
Cylinder Head M11 Bolts - Second Pass in Sequence 90 degrees
Cylinder Head M11 Bolts - Final Pass in Sequence 70 degrees
Exhaust Manifold Bolts - First Pass 15 N.m 11 lb ft
Exhaust Manifold Bolts - Final Pass 20 N.m 15 lb ft
Intake Manifold Bolts - First Pass in Sequence 5 N.m 44 lb in
Intake Manifold Bolts - Final Pass in Sequence 10 N.m 89 lb in
Intake Manifold Sight Shield Retainer Bolts 5 N.m 44 lb in
J 41798 M8 Bolt 25 N.m 18 lb ft
J 41798 M10 Bolts 50 N.m 37 lb ft