Improved Aftermarket Upper Intake? - Page 2 - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


1992-1999 Series I L27 (1992-1994 SE,SLE, SSE) & Series II L36 (1995-1999 SE, SSE, SLE) and common problems for the Series I and II L67 (all supercharged models 92-99) Including Olds 88's, Olds LSS's and Buick Lesabres Please use General Chat for non-mechanical issues, and Performance and Brainstorming for improvements.

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Old 02-04-2007, 03:35 PM   #11
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Techinfo is your friend. Link at the top of the page.

From memory, I think the LIM to heads are about 18 ft/lbs and the UIM to LIM is about 84 in/pounds? Don't go by my memory. Check the specs.
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Old 02-05-2007, 02:42 PM   #12
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Techinfo page said 11ft/lbs. It doesn't say whether that'* for the Lower or the Upper. I'll wing it.
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Old 02-05-2007, 03:04 PM   #13
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Got FSM for '98 H-body right in front of me...

UIM bolt: 89 in-lb
TB nut: 89 in-lb
TB support bolt: 89 in-lb
FI rail nut: 89 in-lb
LIM bolt: 11 ft-lb
Water outlet bolt (thermo housing): 20 ft-lb
EGR outlet bolt: 21 ft-lb
Exhaust crossover heat shield nut: 15 ft-lb
Generator brace bracket bolt: 37 ft-lb
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Old 02-05-2007, 03:20 PM   #14
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YUP! what he said.
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