Ram Air IV exhaust manifolds - Pontiac GTO Forum
User Tag List

Reply
 
LinkBack Thread Tools Display Modes
post #1 of 14 (permalink) Old 10-25-2018, 09:48 PM Thread Starter
 
Join Date: Oct 2018
Posts: 5
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 2 Post(s)
Ram Air IV exhaust manifolds

Installing a 69 400 in my 65 GTO will the Ram Air IV exhaust manifolds fit? Would like to use them if possible.
Thanks
GTO52 is online now  
Sponsored Links
Advertisement
 
post #2 of 14 (permalink) Old 10-25-2018, 09:55 PM
Super Moderator
 
BearGFR's Avatar
 
Join Date: Aug 2008
Location: Springtown, TX
Posts: 5,742
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 122 Post(s)
Garage
They will only fit if you have RamAir IV heads. Do you?

Bear

BearGFR
Springtown, TEXAS
BearGFR is offline  
post #3 of 14 (permalink) Old 10-25-2018, 10:20 PM
 
Join Date: Jun 2015
Location: Arizona
Posts: 602
Mentioned: 2 Post(s)
Tagged: 0 Thread(s)
Quoted: 79 Post(s)
RA IV exhaust manifolds would probably work with any round port Pontiac head that has the necessary bolt holes.

Reproduction D port exhaust manifolds are available though and they would probably work well for your application.

Sent from my SM-G930V using Tapatalk
Shake-N-Bake is offline  
 
post #4 of 14 (permalink) Old 10-26-2018, 08:20 AM
Super Moderator
 
BearGFR's Avatar
 
Join Date: Aug 2008
Location: Springtown, TX
Posts: 5,742
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 122 Post(s)
Garage
Quote:
Originally Posted by Shake-N-Bake View Post
RA IV exhaust manifolds would probably work with any round port Pontiac head that has the necessary bolt holes.

Exactly, which would include 68 1/2 Ram Air II, 69-70 Ram Air IV, 71-72 455 HO, 73-74 455 SD


Bear

BearGFR
Springtown, TEXAS
BearGFR is offline  
post #5 of 14 (permalink) Old 10-26-2018, 04:42 PM
 
Instg8ter's Avatar
 
Join Date: Sep 2010
Location: Near Detroit
Posts: 3,931
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 23 Post(s)
either way the RA reproduction manifolds are a much better fit in the car than headers and flow nearly as well. Put them on mine and will never put another pair of headers in a Pontiac unless it's pushing over 500 HP.

Instg8ter is offline  
post #6 of 14 (permalink) Old 10-27-2018, 08:43 AM Thread Starter
 
Join Date: Oct 2018
Posts: 5
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 2 Post(s)
Using Edelbrock round port heads. Was wondering if they will clear a-arms and frame on my 65. Thanks
GTO52 is online now  
post #7 of 14 (permalink) Old 10-27-2018, 09:47 AM
Super Moderator
 
BearGFR's Avatar
 
Join Date: Aug 2008
Location: Springtown, TX
Posts: 5,742
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 122 Post(s)
Garage
Quote:
Originally Posted by GTO52 View Post
Using Edelbrock round port heads. Was wondering if they will clear a-arms and frame on my 65. Thanks
Well, I would have thought they'd work but I got curious and just called Ram Air Restoration myself (https://www.ramairrestoration.com/contact-us) and asked. The guy says they won't work because of interference on the driver's side with the frame.

Color me surprised.

Bear

BearGFR
Springtown, TEXAS

Last edited by BearGFR; 10-27-2018 at 10:00 AM.
BearGFR is offline  
post #8 of 14 (permalink) Old 10-27-2018, 10:13 AM Thread Starter
 
Join Date: Oct 2018
Posts: 5
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 2 Post(s)
That's good to know. Looks like I'll be using headers. Thanks Bear I appreciate your help
GTO52 is online now  
post #9 of 14 (permalink) Old 10-27-2018, 10:30 AM
Super Moderator
 
BearGFR's Avatar
 
Join Date: Aug 2008
Location: Springtown, TX
Posts: 5,742
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 122 Post(s)
Garage
Quote:
Originally Posted by GTO52 View Post
That's good to know. Looks like I'll be using headers. Thanks Bear I appreciate your help
Good luck! Obviously I don't know my 65's as well as I do 69's --- Maybe GeeTee knows which headers are the least painful on 65's --- they all suck, just some suck less.

I too have round port Edelbrocks on my 69 and am running Doug's D567's on it. To get them to work, I had to make some changes:

Relocate the brake distribution block from the inside of the drivers side frame rail to the top.
  • Convert to a mini-starter, otherwise R&R of the starter on the drivers side would not be possible without loosening the header.
  • Re-bend and re-route the rod that operates the 'back drive' linkage between the transmission and the steering column lock.
  • Re-route the transmission cooler lines away from the passenger side header to keep them from getting heated

After that, still if/when I remove the passenger side lower control arm I'm going to have to move the header out of the way in order to remove one of the bolts. If I were to turn the bolt around backwards so that the nut end is next to the header, the end of the bolt that sticks out through the nut would wear a hole in that tube - that's how close it is.


Other tips:
I like RemFlex graphite gaskets
'This time' I replaced some of the bolts on both sides with studs. This makes it a LOT easier if you ever have to loosen and reinstall the headers because you can "hang" the gasket and the header on the studs and not have to try to hold them both in place while you start the bolts.
If you want protective coating, the way to go is to buy bare headers and then send them off to JetHot for coating. Their coating is better - especially if you get the upgraded "extreme heat" coating. I had mine done in a dark blue that goes really well with the 69 silver blue metallic engine paint.


I have no direct experience with other brands, but I have "heard" that MadDog headers fit well.

Bear

BearGFR
Springtown, TEXAS
BearGFR is offline  
post #10 of 14 (permalink) Old 10-31-2018, 05:50 PM
64-67 Expert
 
geeteeohguy's Avatar
 
Join Date: Feb 2008
Location: Fresno, California
Posts: 8,543
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 117 Post(s)
Are the head heights different? I'm asking, because two of my friends are running the RARE cast iron HO exhaust manifolds on their '65 GTO's with zero issues. They perform and sound great. With no exhaust leaks. Another friend has HO manifolds on his '67 GTO.....again, no issues at ALL. I've run Hooker, Hedmann, Eagle, and other headers on early GTO's....and ALL of them were a PITA to install, required mods done to the headers AND car to fit, and all eventually leaked. I hear Doug's are about the best fit these days, but I would definitely go with cast HO manifolds on an early GTO. The trick to install them on the driver's side is to put the bolts into the manifold holes BEFORE you lower the manifold down into the engine compartment. If you try to put them in while holding the manifold to the head, the bolts will be too long to maneuver into place. But if they're already inserted into the holes, piece of cake. All of the cars above have been running these manifolds for many years and thousands of miles with zero issues........
geeteeohguy 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



Similar Threads
Thread Thread Starter Forum Replies Last Post
Exhaust for the 70 judge RAM AIR IV 1970gto455conv 1964-1974 Tempest, LeMans & GTO Engine Tuning and High Performance 3 08-17-2014 09:39 PM
Ram air exhaust manifolds on Ebay 65gto 1964-1974 Tempest, LeMans & GTO Engine Tuning and High Performance 5 02-25-2014 05:54 PM
1965 GTO Ram Air Restorations Exhaust Manifolds - Downpipe Question hooperk 1964-1974 Tempest, LeMans & GTO Engine Tuning and High Performance 1 06-29-2012 04:35 AM
65 Ram Air Exhaust Manifolds Purple Haze 1964-1974 Tempest, LeMans & GTO Engine Tuning and High Performance 6 05-09-2011 06:22 PM
repo ram air exhaust manifolds 68gtohawk8369 1964-1974 Tempest, LeMans & GTO Engine Tuning and High Performance 3 04-08-2010 09:07 PM

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