Doug Thorley Tri-Y headers installed

66nova

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Any pics of the exhaust all hooked up? Underneath, I bought the same headers, and wondering how you hooked the y up to the catbqck

Do you know what type of flange you have? For some reason they used a few different kinds. If you have a ball flange style then they should bolt right up.

If you have a 2 bolt style like I have then there's some modification required.

I cut the ball flange off of the Thorley Y pipe and welded the flange from the factory pipe.

Cut this


Then weld
 

Matte454

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Thanks for the quick pics! Gives me a good idea, my truck is a little different with the 3rd cat and odd clamp ball socket. The Doug thorley socket just looks plain weird! Can't see it fitting any setup.
 

66nova

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Thanks for the quick pics! Gives me a good idea, my truck is a little different with the 3rd cat and odd clamp ball socket. The Doug thorley socket just looks plain weird! Can't see it fitting any setup.


I agree. It kinda an odd ball set up, but I guess it fits something. :lol:

The headers themselves fit very nice. One of the easiest header installs I have done. The hardest part was getting the old stuff off. Hopefully your truck will be easier since it's newer. I had to chop up the factory Y to get it off.
 

buckshot85

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Where's that drive by? Lol I'm wanting either a corsa or borla mufflers and can't decide lol. The drone of the magnaflow is driving me nuts
 

gmctrucks

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Looking go buddy keep up the good work and please be safe at the track also I love your truck.
Roland :tmc:
 

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