Here is the torque spec as presented in the factory service information; it references an updated spec per a TSB; I have posted teh TSB for you as well.
I hope this is helpful; if so, an accept would be most appreciated! Thanks!
Bulletin No.: 02-06-01-034
Date: October, 2002
SERVICE MANUAL UPDATE
Subject: Revised Rocker Arm Bolt Fastener Tightening Specification
Models:1996-1998 Buick Skylark1996-2002 Buick Regal1997-2002 Buick Century1996 Chevrolet Beretta, Corsica, Lumina APV1996-2001 Chevrolet Lumina1996-2002 Chevrolet Monte Carlo1997 Chevrolet Venture1997-2003 Chevrolet Malibu2000-2002 Chevrolet Impala1996-1997 Oldsmobile Cutlass Supreme, Silhouette1996-1998 Oldsmobile Achieve1998-1999 Oldsmobile Cutlass, Intrigue1999-2002 Oldsmobile Alero1996-1997 Pontiac Trans Sport1996-2003 Pontiac Grand Am, Grand Prixwith 3.1L or 3.4L Engine (VINs M, J, E - RPOs L82, LG8, LA1)
This bulletin is being issued to revise the rocker arm bolt fastener tightening specification found in several procedures in the Engine Mechanical - 3.1L sub-section and the Engine Mechanical - 3.4L sub-section of the Service Manual. Please replace the current information in the Service Manual with the following information.
The following information has been updated within SI. If you are using a paper version of this Service Manual, please make a reference to this bulletin on the affected page.
The correct torque for the rocker arm bolt is 14 N.m (124 lb in) plus 30 degrees. This specification can be found in Fastener Tightening Specifications, Valve Rocker Arm and Push Rod Replacement and Lower Intake Manifold Replacement (for 1996 Chevrolet Beretta/Corsica, 1996-1997 Buick Skylark, Pontiac Grand Am, Oldsmobile Achieva and 1997 Chevrolet Malibu ONLY).