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Camaro V8 LS3 / L99 Engine, Exhaust, and Bolt-Ons Bolt-Ons | Intakes | Exhaust

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Old 08-01-2009, 10:50 AM   #1
Slvr1SSA6
 
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L99 exhaust

Does anybody know what the factory exhaust diameter is for the L99 auto cars??
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Old 08-01-2009, 12:06 PM   #2
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2.5"
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Old 08-01-2009, 12:09 PM   #3
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Are you sure? (not questioning your knowledge) I had mine up changing the oil and it measured 2.25.
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Old 08-01-2009, 12:24 PM   #4
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yes it is 2.5" o.d., when i had my x-pipe made we ordered 2.5" stainless and it matched the factory pipes perfect
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Old 08-01-2009, 02:05 PM   #5
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I guess I will have to get mine back in the air and double check........uuuhhmmm.
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