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.
35 ft pounds
8ft pounds
The 1999 Pontiac cylinder head gasket bolt torque specification is 160 pounds. The intake manifold bolt torque specification is 90 pounds.
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.
lower intake is 115 in pounds upper is 18 ft pounds
the torque specs for the intake manifold are 115 inch pounds inch pounds to newton meter = mutiply .113 by the number of inch pounds aprox. 9.5 foot pounds
An aluminum manifold typically weighs significantly less than a cast iron intake manifold. While an aluminum manifold may weigh around 10 to 25 pounds, a cast iron intake manifold can weigh anywhere from 30 to 70 pounds or more, depending on the design and size. This weight difference contributes to improved engine performance and efficiency, as aluminum reduces the overall weight of the vehicle.
30 ft pounds
The 350 cubic inch Chevrolet intake manifold bolts have a torque specification of Haiti pounds psi. The bolts should be torqued at 40 pound intervals.
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.
Dunno if it's any help, but on my 93 model it was 125 INCH pounds. No sequence was listed so I criss-crossed in an alternating pattern.