Hedman Headers - Pontiac GTO Forum
User Tag List

 
LinkBack Thread Tools Display Modes
post #1 of 7 (permalink) Old 09-21-2019, 05:12 PM Thread Starter
 
Join Date: Jul 2018
Posts: 19
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 3 Post(s)
Hedman Headers

Purchased headers already without figuring out clearances. They are full length going into 67 GTO with Dearborn 3spd toploader tranny and aftermarket high torque mini starter. Any heads up re this fit as far as oil filter or any other clearance issues. Engine is stock 400 with 670 heads. Thank you for your help.
Honeyharbour62 is offline  
Sponsored Links
Advertisement
 
post #2 of 7 (permalink) Old 09-21-2019, 06:24 PM
 
Join Date: Jul 2016
Location: North Louisiana
Posts: 607
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 69 Post(s)
I ran the Hedman 1 3/4" 4-tubes in '67 & '69 GTO bracket cars, with 400 & 455. Never had any problems with the headers.

Also ran Hedman 1 3/4" 4-tubes in our 1st & 2nd gen Birds. Always liked 'em.
bigD is online now  
post #3 of 7 (permalink) Old 09-21-2019, 07:25 PM Thread Starter
 
Join Date: Jul 2018
Posts: 19
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 3 Post(s)
Great information bigD. Thank you for the feedback.
Honeyharbour62 is offline  
 
post #4 of 7 (permalink) Old 09-25-2019, 09:52 PM
 
Join Date: Jun 2019
Posts: 14
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 5 Post(s)
I realize they arenít the same year . On my 70 GTO 461 Eheads with Hedmans I had to move the proportioning valve to clear the headers.
Dano628 is offline  
post #5 of 7 (permalink) Old 09-27-2019, 03:12 AM Thread Starter
 
Join Date: Jul 2018
Posts: 19
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 3 Post(s)
Drums all around so no proportioning valve.
Honeyharbour62 is offline  
post #6 of 7 (permalink) Old 10-04-2019, 02:43 AM Thread Starter
 
Join Date: Jul 2018
Posts: 19
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 3 Post(s)
I stand corrected. Proportioning or distribution block is on a 67 GTO with all wheel drums. It's on the inside of the frame rail right next to where the Hedmans are. Moving that block and rerouting lines from the master cylinder to and from it. The rag joint on the standard steering box also interfers with headers so making clearance there as well. 'Z' bar, starter and oil filter clear np. Will wrap the high torque mini starter anyway.
Honeyharbour62 is offline  
post #7 of 7 (permalink) Old 10-04-2019, 10:06 PM
 
Join Date: Mar 2016
Location: aurora, colorado
Posts: 118
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 7 Post(s)
i had to heavily modify my 1 3/4 hedman header flanges to access the bolts, particularly the bolts between cyl 5-7 and 6-8. these headers were longer than normal. this was on iron heads on a 1965. also clearanced for the rag joint. the brake line from the master cylinder to the distribution block was very close but didn't touch
john23 is offline  
Sponsored Links
Advertisement
 
Reply

  Pontiac GTO Forum > The 1964-1974 Pontiac Tempest, Lemans & GTO > 1964-1974 Tempest, Lemans & GTO Exhaust, Suspension, Alignment, Fuel Tank and Brakes.

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the Pontiac GTO Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:
OR

Log-in











Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode



Posting Rules  
You may post new threads
You may 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
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome