LT1 Based Engine Tech 1993-1997 LT1/LT4 Engine Related

plug gap?

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Jan 5, 2007 | 04:30 PM

#1

sonia93

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Joined: May 2006

Posts: 55

From: Louisiana

plug gap?

what should the plug gap be on a 93 Z28 I dont know if the type matters but they are NGK TR55 and also what is better the copper ones or platinum?

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Old

Jan 5, 2007 | 04:45 PM

#2

2000GTP

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Joined: Mar 2005

Posts: 12,312

From: Aurora, IL

Gap should be .050" As for platinum or copper, the platinums will last longer but are more expensive. The coppers are cheaper but will require quicker maintenance intervals.

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Jan 5, 2007 | 07:43 PM

#3

Critter

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Joined: May 2001

Posts: 1,511

From: fort worth/burleson Tx

book says .050.
i have .043 in mine
but in your case i would go .045

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