L27 vs L67 internals - 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 03-19-2007, 10:33 PM   #1
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Default L27 vs L67 internals

Is there any difference between the 93 L27 rotating assembly and any 92-95 L67s?
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Old 03-19-2007, 10:38 PM   #2
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crank is the same Part number

there is a difference in the pistons and the Rods.....floating wrist pin vs not... etc....
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Old 03-19-2007, 10:40 PM   #3
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Don and Brad recently did a motor swap with an L27. If the transmission held better...Brad would be able to give a better long term test.

IIRC they noticed a couple small differences, however it'* expected to hold together.

(Just a suggestion...why not shock them with an S2 L67?)
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Old 03-19-2007, 10:49 PM   #4
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I ask because I have a 93 L27, but it'* been sitting without heads for a year and I'm sure some coolant went down some oil passages when I was tearing it down.

What would I do with all these parts if I went a different direction?
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Old 03-19-2007, 11:35 PM   #5
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Metal recyclyers are paying well for scrap these days. My mechanic buddy does pretty well on doa motors.
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Old 03-19-2007, 11:37 PM   #6
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