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

14mm or 15mm ?

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Old May 3, 2003 | 02:17 PM
  #1  
Van5150's Avatar
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From: Haverhill MA
14mm or 15mm ?

Trying to change sparkplugs/ install new O2 sensors / Changing over gutted cat to pass emmissions.

The stock exaust manifold bolts on the flange to the Y- pipe, are they 14mm or 15 mm ? Anyone remember.,

I am getting my a$$ kicked here, I really dont wanna break one..And I am all over it with the PB. Thanks
Old May 3, 2003 | 02:26 PM
  #2  
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Re: 14mm or 15mm ?

Originally posted by Van5150
Trying to change sparkplugs/ install new O2 sensors / Changing over gutted cat to pass emmissions.

The stock exaust manifold bolts on the flange to the Y- pipe, are they 14mm or 15 mm ? Anyone remember.,

I am getting my a$$ kicked here, I really dont wanna break one..And I am all over it with the PB. Thanks
arent they standard?
its been a while.. just get a "fitting" for the 02 sensor. it came with my wrenches. there was one for a spark plug and one for an o2 sensor. make life lot more easy. I want to say one is 5/8ths. prob 02 sensor.

and if he 14 fits, its 14, if it doesn't its 15
Old May 3, 2003 | 03:35 PM
  #3  
Van5150's Avatar
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Posts: 406
From: Haverhill MA
My bad, maybe I said it wrong.

The stock exaust manifold bolts on the flange to the Y- pipe, are they 14mm or 15 mm ?

Thanks again
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