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Re: What are the torque specs for intake and head for a...
For 1988-1995 4.3L,5.0L and 5.7L intake manifold bolts are torqued to 35ft.lbs.Start with center bolts on each side moving out finishing with the bolts in the front of the motor and the back
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It is a bit dangerous providing information where you only include the year, the make and the c.c. of the engine. They all have model names and they all have engine designation codes.
Cylinder Head Bolts (First Pass all M11 Bolts in Sequence)
30 N?·m
22 lb ft
Cylinder Head Bolts (Second Pass all M11 Bolts in Sequence)
90 degrees
Cylinder Head Bolts (Final Pass all M11 Bolts in Sequence-Excluding the Medium Length Bolts at the Front and Rear of Each Cylinder Head)
90 degrees
Cylinder Head Bolts (Final Pass M11 Medium Length Bolts at the Front and Rear of Each Cylinder Head in Sequence)
50 degrees
Cylinder Head Bolts (M8 Inner Bolts in Sequence)
30 N?·m
22 lb ft
Intake Manifold Bolts (First Pass in Sequence)
5 N?·m
44 lb in
Intake Manifold Bolts (Final Pass in Sequence)
10 N?·m
89 lb in
Intake Manifold Wiring Harness Stud
10 N?·m
89 lb in
Heads 65
rods bearings 45
mains bearings 65
all are in foot pounds,,, not sure on intake but i think 20 foot pound
the heads tight in sequence,, start in center and work out back and forth,,,left and right opposite of the other,,,tightin all to. 20 first then go back and tightin to 65
(step 1 ) the torque specs for the heads are---1998 through 2001 are 37 foot lbs. ( step 2) rotate an additional 90-degrees (1/4 turn). intake manifold bolts ( lower ) step 1-- 62 in-lbs, step 2--115 in-lbs. intake manifold bolts/studs ( upper ) 18 ft-lbs. this is for the 3.1 v-6, have a good day!
Cylinder Head Bolt (Preferred Method)
All Bolts First Pass in Sequence
22 ft.lb
Long Bolt Final Pass in Sequence
75 deg.
Medium Bolt Final Pass in Sequence
65 deg
Short Bolt Final Pass in Sequence
55 deg.
Cylinder Head Bolt (Optional On-Vehicle Strategy)
First Pass in Sequence
26 ft.lb
Second Pass in Sequence
44 ft.lb
Final Pass in Sequence
66 ft.lb
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