Torque specs for the Chev. 3.1 intake manifolds are as follows:
Lower Intake Manifold
Center bolts
Step 1 - 62 in-lbs
Step 2 - 115 in-lbs
Corner bolts
Step 1 - 115 in-lbs
Step 2 - 18 Ft-lbs
Upper Intake Manifold
Bolts & Studs - 18 Ft-lbs
Specs are taken from Hayes Repair Manual: Chevrolet: Lumina, Monte Carlo, & Impala (FWD) 1995 thru 2005
35 ft. lbs.
They are under the intake manifold.
There are two knock sensors located in the block. They are just under the intake manifold.
It goes to the temp gauge which is usually screwed in the head between the manifold on the drivers side, or into the thermost housing on the intake manifold.
The intake manifold gaskets have failed on many of the V6 and V8 Chevy and GMC trucks in our fleet. The replacement gaskets are a better design that the original.
44 in-lbs. step one. and 89 in-lbs. step two
under the intake manifold
step 1 is 44 inch-lbs step 2 is 89inch-lbs.
They are underneith the intake manifold. You can not see are get to them until you REMOVE the INTAKE manifold.
Under the intake manifold.
The intake manifold is bolted on the center of the engine between the 2 Valve covers.
It is inside the upper intake manifold.
under he intake manifold
30f
.035 FT. LBS.
under the intake manifold
It has 2 and both of them are underneith the intake manifold.