View Full Version : Thorley Headers and A/C


johnnyk31
Jul 13th, 07, 02:37 PM
Is anyone running Thorley Headers and has Vintage A/C system. Im looking at Summit's part # DTE-375Y-S which shows it wont work with A/C

Camaros-n-Chevelles
Jul 13th, 07, 03:01 PM
Contact Yearwood Rod and Custom. http://www.yearwood.com/store/products_view.php?cat=65
They sell trick custom brackets for Street Rods.
I have a set for my 68 Camaro and it looks like it will work great.
Hope this helps,
Tory

Lucky68
Jul 13th, 07, 03:26 PM
Johnny,
What year Camaro are you wanting the headers for?
Just to give you a heads up, Summit and Jegs are incorrect showing the 375Y as the proper header for 1st Gens. You want to get the 376Y for a proper fit. Many have bought the 375's thinking they were correct and ended up having clearance problems with the pitman arm.
As far as A/C, I believe the issue is with factory installed units. I've heard there is no problem with aftermarket A/C like vintage air.

Run269
Jul 13th, 07, 03:53 PM
376Y is correct for 1st gens. i have them on my 69 and tried to install the factory underhood AC box and it hits the header tube just enough to keep it from mounting. :(

otherwise they fit perfect. i have 3/8" clearance on both sides between the flange the exhaust bolts to and the floor boards. no clearance problems at all with the steering linkages or power steering box.

zdld17
Jul 13th, 07, 04:09 PM
I am using Vintage and 376 Y 1 C. No issues

TMessick
Jul 13th, 07, 05:55 PM
FYI, I ended up getting the 376Y1 headers from www.autoanything.com (http://www.autoanything.com/exhausts-mufflers/61A2787A0A0A2613850.aspx) for a good deal cheaper than Jegs or Summit were selling them. Read about that little tip in THIS POST (http://www.camaros.net/forums/showpost.php?p=738683&postcount=32) from Mike68RS.

They also have various coupon codes/sales going on. Just search "autoanything" and "coupon code" in your favourite search engine....

johnnyk31
Jul 13th, 07, 09:19 PM
Thanks to all who chimed in. I was told by summit that the part # I needed was 375Y1 but I will order 376Y1. I will definitely checkout autoanything.com as well. thanks
Johnny K

zdld17
Jul 13th, 07, 09:41 PM
If you have manual trans, sbc, and want the tri Y header , 376 Y 1 C(coated) is your header. Best you call them to get the correct application. I dont think Summit knows .

hhott71
Jul 14th, 07, 07:47 AM
fabricate one.

Buy any brand header AC bracket for that application, if it fits, use it, might need minor modification which would be easy to do.

zdld17
Jul 14th, 07, 11:50 AM
Your Vintage air brackets for left hand mount compressor are set up for headers or stock manifold. Good fit.