TPI Torque Specifications

Torque specifications for Tuned Port Injection intakes found on 5.0L LB9 and 5.7L L98 engines of Corvettes, Camaros and Firebirds 1985 – 1992.

Manifold to Runner Bolts 34 N·m 25 ft·lb
Runner to Manifold Bolts 34 N·m 25 ft·lb
Fuel Rail Attaching Bolts 20.3 N·m 15 ft·lb
Throttle Body Attaching Bolts 24.4 N·m 18 ft·lb
Throttle Position Sensor 2.03 N·m 18 in·lb
Idle Air Control Valve 17.65 N·m 13 ft·lb
Throttle Body Coolant Plate 3.05 N·m 27 in·lb
Throttle Body Cover Plate 3.39 N·m 30 in·lb
Power Brake Vacuum Fitting 12.2 N·m 108 in·lb
Fuel Line Nuts 27.1 N·m 20 ft·lb
Fuel Tube Bracket Bolt 34 N·m 25 ft·lb
Fuel Pressure Connection 13 N·m 115 in·lb
Pressure Regulator Base to Rail 4.97 N·m 44 in·lb
Pressure Regulator Bracket 4.97 N·m 44 in·lb
Outlet Tube to R/H Rail Retainer 4.97 N·m 44 in·lb

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