Page 156 of Buick Performance Parts Catalog by TA Performance

REFERENCE 480-922-6807 Order and Tech Line www.TAPERFORMANCE.com TA Performance Products, Inc. 156 Torque Specifications Based on 1970 specifications, other years and engine variations may be different. Final torque specs are listed, some items require multiple torque steps. Aftermarket parts and procedures may require different torque values. Alternator Adjusting Bracket to Water Pump/Timing Cover ................................. 22 22 Bellhousing to Cylinder Block .............................................................................. 35 35 Carburetor to Intake Manifold .............................................................................. 13 13 Choke Cover to Intake Manifold .......................................................................... 8 8 Crankshaft Bearing Caps to Cylinder Block .................................. ...................... 95 110 Crankshaft Pulley to Harmonic Balancer ............................................................. 23 23 Connecting Rods ................................................................................................. 45 Cylinder Head to Cylinder Block .......................................................................... 75 100 Distributor Hold Down .......................................................................................... 13 13 Exhaust Manifold to Cylinder Head ..................................................................... 18 18 Fan Pulley to Water Pump ................................................................................... 20 20 Flexplate Inspection Cover .................................................................................. 4 4 Flywheel/Flexplate to Crankshaft ......................................................................... 60 58 Fuel Pump to Timing Cover ................................................................................. 20 20 Harmonic Balancer to Crankshaft ........................................................................ 120 200 Intake Manifold to Cylinder Head ........................................................................ 55 55 Motor Mount to Cylinder Block ............................................................................ 63 63 Mounting Brackets to Cylinder Heads ................................................................. 35 35 Oil Filter to Pump Cover ...................................................................................... 13 13 Oil Pump Cover to Timing Cover ......................................................................... 10 10 Oil Pan Drain Plug ............................................................................................... 30 30 Oil Pan to Cylinder Block ..................................................................................... 14 14 Oil Pressure Switch to Cylinder Block .................................................................. 23 23 Oil Pump Pressure Regulator .............................................................................. 35 35 Oil Screen Pick Up to Cylinder Block ................................................................ 8 8 Rocker Arm Cover to Cylinder Head ................................................................... 4 4 Rocker Arm Shaft to Cylinder Head ..................................................................... 25 25 Spark Plugs .......................................................................................................... 15 15 Starter to Cylinder Block ...................................................................................... 35 35 Starter Brace to Cylinder Block and Starter ......................................................... 11 11 Thermostat Housing to Intake Manifold ............................................................... 20 20 Timing Chain Cover to Cylinder Block ................................................................. 29 29 Timing Chain Sprocket to Camshaft .................................................................... 48 22 Water Pump To Timing Cover .............................................................................. 7 7 Windage Tray Mounting ....................................................................................... 11 13 350 455 1 1 2 2 3 3 4 4 Component 35 ft/lbs for `68-`72 bolt nut type, 50ft/lbs for `73 later cap screw type Stock specification, see TA instruction sheets for performance applications 3 Reduce to 45 lbs. for aluminum intake manifolds Reduce to 40 lbs. for aluminum intake manifold and aluminum cylinder heads. Firing Orders 1-2-7-8-4-5-6-3 Engine Size Firing Order Bank Numbering LH (Drivers) RH (Passengers) 400-430-455 1-8-4-3-6-5-7-2 1-8-4-3-6-5-7-2 1-3-5-7 1-3-5-7 1-3-5 1-3-5-7 2-4-6-8 2-4-6-8 2-4-6 2-4-6-8 401-425 198-225 V6 1-6-5-4-3-2 1-3-5 2-4-6 231-252 V6 1-6-5-4-3-2 300-340-350

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