The 1947 - Present Chevrolet & GMC Truck Message Board Network







Register or Log In To remove these advertisements.

Go Back   The 1947 - Present Chevrolet & GMC Truck Message Board Network > 47 - Current classic GM Trucks > The 1947 - 1959 Chevrolet & GMC Pickups Message Board

Web 67-72chevytrucks.com


Reply
 
Thread Tools Display Modes
Old 08-07-2020, 12:03 PM   #1
mobileortho
Registered User
 
mobileortho's Avatar
 
Join Date: Sep 2008
Location: Hampton, VA
Posts: 630
Doug thorley headers

These are Doug Thorley THY-327Y-C. They appear to be made almost identical to shorties but are long tube and looks like they may work on an AD. Wondering if anyone running a stock frame & MMII tried them?
Attached Images
 
__________________
Robert C.

1950 3600
3600 re-do, shortening it up

If it's true what they say, "You learn from your mistakes,"
I'm a Genius in the making.
mobileortho is offline   Reply With Quote
Old 08-07-2020, 08:58 PM   #2
mr48chev
Registered User
 
mr48chev's Avatar
 
Join Date: Jul 2007
Location: Toppenish, WA
Posts: 12,314
Re: Doug thorley headers

The price puts them way out of my budget 815.00 list price and a 659.00 sale price would eat a half a year's truck budget for me.

I'm pretty sure that they will fit inside the AD frame rails without an issue and should clear the crossmember. The 67/72 truck crossmember and lower A arms stick back behind the motor mounts for a small block quite a ways.
__________________
Founding member of the too many projects, too little time and money club.

My ongoing truck projects:
48 Chev 3100 that will run a 292 Six.
71 GMC 2500 that is getting a Cad 500 transplant.
77 C 30 dualie, 454, 4 speed with a 10 foot flatbed and hoist. It does the heavy work and hauls the projects around.
mr48chev is offline   Reply With Quote
Old 08-07-2020, 09:55 PM   #3
mr48chev
Registered User
 
mr48chev's Avatar
 
Join Date: Jul 2007
Location: Toppenish, WA
Posts: 12,314
Re: Doug thorley headers

I snagged these two shots off Hubscrub's build thread on the 67 he is building over in the 67/72 pages. Stock exhaust but you can visualize pretty close to where the tubes would run down on the truck they were designed for.

One other thing to think about is how much they drop though. The third photo is the joe cheap Patriot header off my 71 when I had the 350 in it. The bottom of the flange on the collector is almost 18 inches below the centerline of the and they hung down below the frame quite a bit on the 71, I'm thinking that they had to go that low for the exhaust to clear the crossmember under the truck.
Attached Images
   
__________________
Founding member of the too many projects, too little time and money club.

My ongoing truck projects:
48 Chev 3100 that will run a 292 Six.
71 GMC 2500 that is getting a Cad 500 transplant.
77 C 30 dualie, 454, 4 speed with a 10 foot flatbed and hoist. It does the heavy work and hauls the projects around.
mr48chev is offline   Reply With Quote
Old 08-09-2020, 12:29 AM   #4
mobileortho
Registered User
 
mobileortho's Avatar
 
Join Date: Sep 2008
Location: Hampton, VA
Posts: 630
Re: Doug thorley headers

Yeah, I know they’re a bit pricey. It’s a toss up between those and a new chrome grill. It’s kinda hard to judge by those pictures, but I don’t think they’ll drop down too much.
__________________
Robert C.

1950 3600
3600 re-do, shortening it up

If it's true what they say, "You learn from your mistakes,"
I'm a Genius in the making.
mobileortho is offline   Reply With Quote
Old 08-14-2020, 12:13 PM   #5
mobileortho
Registered User
 
mobileortho's Avatar
 
Join Date: Sep 2008
Location: Hampton, VA
Posts: 630
Re: Doug thorley headers

These from Speedway look even more promising at half the cost!
Attached Images
  
__________________
Robert C.

1950 3600
3600 re-do, shortening it up

If it's true what they say, "You learn from your mistakes,"
I'm a Genius in the making.
mobileortho is offline   Reply With Quote
Reply

Bookmarks

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -4. The time now is 02:58 AM.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2020, vBulletin Solutions Inc.
Copyright 1997-2020 67-72chevytrucks.com