SOURCE: Engine Bolt Torques- 2005 Chevy Impala/3400 Engine
Head Bolts
Step one 37 ft lbs then tignten 120 degrees more
Rocker arms
Step one 11 ft lbs then tighten 90 degresss more
Upper intake
89 inch lbs
Lower intake
132 inch lbs
SOURCE: Head bolt torque specs needed for 96 tbird 3.8
Head bolts are torque to yeild so you MUST use new bolts.
Tighten cylinder head retaining bolts in numerical sequence in three steps as follows:
Loosen retaining bolts one at a time two to three revolutions and retighten as follows:
Long bolts:
Short Bolts:
Here is a pic of the sequence
http://i253.photobucket.com/albums/hh43/chuck943/Headboltsequence38L.gif
SOURCE: I need torque specs for head bolts on 1992 merc benz 230 e
hello,230e with engine 102.982,cylinder head bolt,double hexagonal socket m12, stage 1, 55 newton meter,stage 2 90 degrees stage 3 90 degrees,4 pcs. bolt with m8 tighten to 25 nm.ref. technical data year 1993,ty
SOURCE: torque specs for 1998 tercel 1.5L
Main Bearing Cap Torque-42 Ft. Lbs.
Head Bolts Step 1-33 Ft. Lbs. Step 2- Additional 90 Degrees
Rod Bearing Nuts-29 Ft. Lbs.
Hope this helps
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