Torque sequence for 1996 chevrolet van intake manifold with a 4.3 litre moter

Ha, you tried to fool me with the bit about a 3.5 L motor--I could find that one...here is the complete procedure from AutoZone.com:




Installation To install:

1. Clean the gasket mounting surfaces. Be sure to inspect the manifold for warpage and/or cracks. If necessary, replace it.
2. Position the gaskets on the cylinder head with the port blocking plates to the rear and the This Side Up stamps facing upward. Then apply a 3 / 16 in. (5mm) bead of RTV sealant on the front and rear of the engine block at the block-to-manifold mating surface. Extend the bead 1 / 2 in. (13mm) up each cylinder head to seal and retain the gaskets.
   
   Fig. Lower intake manifold tightening sequence-4.3L engines
   
3. Install the lower intake manifold. Tighten the bolts in sequence and in 3 steps, as follows:
   
   
   
   1. Step 1: 26 inch lbs. (3 Nm).
   2. Step 2: 106 inch lbs. (12 Nm).
   3. Step 3: 133 inch. lbs. (15 Nm).
   
   
4. Install or connect the following:
   
   Power steering pump Alternator bracket bolt near the thermostat housing Wiring harness to the lower manifold components, including the injector, EGR valve and ECT sensor Air conditioning compressor bracket-to-the lower intake manifold pencil braces
   
5. Install transmission oil dipstick tube, if necessary.
   
   Fuel supply and return lines to the rear of the lower intake
   
6. Temporarily reattach the negative battery cable, then pressurize the fuel system (by cycling the ignition without starting the engine) and check for leaks.
7. Disconnect the negative battery cable.
8. Install or connect the following:
   
   Heater hose to the lower intake Upper radiator hose to the thermostat housing Distributor assembly and engage the wiring Ignition coil Connect vacuum hoses to the upper and lower intake manifold. New upper intake manifold gasket, making sure the green sealing lines are facing upward Upper intake manifold Manifold retainers. Tighten them to 88 inch lbs. (10 Nm) using two passes. Purge solenoid and bracket Brake booster vacuum hose at the upper intake manifold PCV hose to the rear of the upper intake manifold Vacuum hoses to both the front and rear of the manifold assembly Throttle body Throttle linkage to the upper intake Wiring to the upper intake components including the TP sensor, IAC motor, MAP sensor and the fuel meter Engine cover Air intake assembly
   
9. Connect negative battery cable.
10. Refill the engine cooling system.
11. Start the engine and check for leaks.