What head gaskets to use? - 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 10-15-2004, 05:02 AM   #1
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Default What head gaskets to use?

Looks like the heads will be coming off my 96 L-36, compression readings low on #5 & #6.
So what gaskets and bolts should be used GM or Fel-Pro?
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Old 10-15-2004, 07:40 AM   #2
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GM... i've heard of some people here having leaks after just a couple weeks on the fel pros.


-justin
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Old 10-15-2004, 01:55 PM   #3
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Thanks for the reply.
Twenty years ago I would have purchased a Fel-Pro head set & new bolts without question for my 72 LeMans, but things change.
This all started when I decided to replace the lower intake manifold gaskets last week. Decided to run a compression check and vacuum check before touching any thing. This is what I found.

--# 2 = 130psi ----------- # 4 = 75 ------------ # 6 = 50

--# 1 = 125 -------------- # 3 = 75 -------------- # 5 = 50



Strange how the pressure drops the closer you get to throttle body. Wonder if coolant has seeped in and scored the cylinder walls or cracked the rings.
Only have 15” of manifold vacuum.
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Old 10-15-2004, 03:48 PM   #4
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bill strayed me away from the felpros for the head gaskets.. just something with the 3800 design or something. But he didn't say anything bad about other gaskets [EGR, TB, LIM, etc]. I use a fel-pro on my EGR valve.. if that means anything .


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