If your 1988 Celebrity has the 2.5L 4 cylinder engine the torque is 25 ft lbs.
If you have the 2.8L V6 engine the torque is 23 ft lbs.
This per my 1988 factory service manual.
On a cast iron intake the torque is 30 lb/ft.
1996 chevy c1500 pick up 305 motor bolt torque spec intake manifold
what are the torque specifications for 2002 ford 4.0 intake manifold
Take a vacuum hose off at the intake manifold and put a vacuum gauge on the port, then read the vacuum with the engine running.
Depends on which engine you have. Do you have the 2.5 4 cylinder or the 2.8 V6? On the 2.5 4 cylinder engine it is on the center of the intake manifold near the valve cover. If you have a 2.8 V6 it is on the intake manifold near the throttle body.
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Intake manifold torque specifications for the Olds 403 is listed as 30 ft-lbs.
There is 2 of them and thay are under the intake manifold. You will have to remove intake manifold to get to them.
Intake Manifold (Cast Iron Heads) Non- Hardening Sealer 30 ft-lbs.
Should be written on intake manifold.
Bstuff.com should have the info you are looking for.
Install the lower intake manifold to the engine. Apply sealer, GM P/N 1052080 or equivalent, to the lower intake manifold bolts.Install the lower intake manifold bolts. Tighten the bolts in three steps:TightenTighten the bolts on the first sequence to 8 N·m (71 lb in).Tighten the bolts on the second sequence to 12 N·m (106 lb in).Tighten the bolts on the final sequence to 15 N·m (11 lb ft).I this is what you are looking for.GMmechanic@gmail.com