S1 L67 cylinder heads - 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 06-12-2007, 05:39 PM   #11
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Stock roller pivot lifters will gain you next to nothing. Less than 5hp. That'* alot of work for little gain.
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Old 06-12-2007, 05:47 PM   #12
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PM sent Jimmy.

Will, I agree. However, I am on a mission to kill KR @ WOT that has been a nagging problem for a very long time. I highly suspect a head gasket edge sticking into the combustion chamber, but can't be positive. It might be some other hotspot. Since the only way to thoroughly inspect the chambers is by ripping the heads off, I might as well do it right. The rockers? Probably Yella Terra. Just gathering parts now, long term project here. If I am lucky, once they are off, I will see the issue and fix it, if not, I had some fun and can then focus on a potential fuel issue, but I am not pushing enough boost with a stock pulley to require more fuel (Injectors are known to be good (flow matched from FIP) and fuel pump is a new stocker).

Oops, that was off topic, sorry.
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