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Old 06-20-2006, 11:51 AM   #1
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Default LN3 or L27

With only the engine sitting in front of me how would I know if it is a LN3 or L27? I am not familiar with these at all.
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Old 06-20-2006, 12:04 PM   #2
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L27 has a black composite intake or a white aluminum one. The LN3 is a aluminum intake that says 3800 on it or has a injector cover that has a retangular opening in the middle
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Old 06-20-2006, 12:05 PM   #3
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I believe LN3 has a flat upper intake. The L27 has the 'bumpy' intake. Black plastic (and aluminum in 92). Quickest way to tell IMO.

L27:
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Old 06-20-2006, 12:07 PM   #4
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Quote:
Originally Posted by bonnie94ssei
I believe LN3 has a flat upper intake. The L27 has the 'bumpy' intake. Black plastic (aluminum in 92).
thanks for clearing it up Pete...good description... L27 is bumpy..
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Old 06-20-2006, 12:11 PM   #5
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So this is a LN3?

Guess I should have put a pic up in the first place.
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Old 06-20-2006, 12:12 PM   #6
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I saw that..it'* a form of the LN3 ... doesn't look like the exact LN3 we pulled from Frankie or the ones I see at the yard. Park Ave right?
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Old 06-20-2006, 12:31 PM   #7
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Quote:
Originally Posted by BillBoost37
I saw that..it'* a form of the LN3 ... doesn't look like the exact LN3 we pulled from Frankie or the ones I see at the yard. Park Ave right?
From a Regal supposedly.
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Old 06-20-2006, 12:38 PM   #8
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I'm pretty certain that the one with 3800 stamped on the top of the UIM just means it is an earlier LN3 (88 ). They started putting 3800 on the engine cover for '89.
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Old 06-20-2006, 05:29 PM   #9
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Quote:
Originally Posted by captainmiller
I'm pretty certain that the one with 3800 stamped on the top of the UIM just means it is an earlier LN3 (88 ). They started putting 3800 on the engine cover for '89.
Correct.... The engraved 3800 was only done for the 88 model year...

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