Bstuff.com should have the info you are looking for.
The 1997 Buick LeSabre intake manifold bolt torque specifications is 45 pounds per square inch. The manifold bolts should be torqued in 15 pound intervals.
Around 30ft lbs.
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
10 ft lbs
Lower intake manifold bolt 115 in/lb. Upper intake manifold bolt 18 ft/.
Click this link or paste it into your browser. The answer is here. http://www.f150online.com/forums/engine/152892-lower-intake-manifold-torque-specs.html
lower intake is 115 in pounds upper is 18 ft pounds
There is no torque spec for the air filter --it sits in its housing which snaps open and closed.The intake manifold torque specs are 89 inch pounds (7.5 ft.lbs.), that is for both the upper and lower intake.
I FOUND THIS AT WWW.AUTOZONE.COM, CLICK ON VEHICLE SPECS . For your 1999 CHEVROLET TRUCK BLAZER 2WD: INTAKE BOLT TORQUE FOOT POUNDS (FINAL TORQUE) TORQUE LOWER MANIFOLD BOLTS TO 27 IN/LBS TORQUE LOWER BOLTS TO 9 FT/LBS TORQUE LOWER BOLTS TO 11 FT/LBS TORQUE UPPER MANIFOLD BOLTS TO 44 IN/LBS TORQUE UPPER MANIFOLD BOLTS TO 7 FT/LBS (TO TORQUE BOLTS & NUTS, START IN CENTER USING CRISSCROSS PATTERN)
2000 3.8 Lower intake manifold (manifold to cylinder head) 1st step is 44 inch pounds, 2nd step is 89 inch pounds. This must be done in sequence.
24 ft lbs lower intake 115 inch lbs exhaust
The lower intake manifold to cylinder head torque specification is 132 inch pounds. The upper plastic intake plenum to lower intake should be done in three steps 22 inch pounds, 44 inch pounds and thirdly 89 inch pounds. Be sure to follow the appropriate tightening sequence diagram.