C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

Ngk Tr55

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Old May 23, 2005 | 08:58 AM
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Default Ngk Tr55

What is the optimal gap to run on a heads/cam LT1 with NGK TR55 plugs?
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Old May 23, 2005 | 09:14 AM
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I stayed with what the General said to use. (.050")
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Old May 23, 2005 | 12:48 PM
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Originally Posted by Strick
I stayed with what the General said to use. (.050")
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Old May 23, 2005 | 01:21 PM
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Originally Posted by onedef92
I'd stick to .050 as well, unless your spraying or you raised your compression a bunch. Then you might consider something a little smaller to keeping it from flaming out.
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Old May 23, 2005 | 02:15 PM
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If your running a little hotter spark you can widen the gap.
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Old May 23, 2005 | 04:01 PM
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I just want to add I'm very happy with the TR55's. I wanted to go with the NGK Iridium's but at $8.49 a pop, they're a little too rich for my blood for a set of 8.

Heck, my entire tune-up (minus the Mobil 1 oil and filter) was $54.85 since I purchased the parts from NAPA.
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Old May 24, 2005 | 07:15 AM
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Thanks guys.
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