#1  
Old 11-27-2021, 02:42 PM
unruhjonny's Avatar
unruhjonny unruhjonny is offline
Ultimate Warrior
 
Join Date: May 2004
Location: Calgary, AB, Canada
Posts: 5,396
Default Do 1974 GTO's have a unique breather tube?

I am wondering if the '74 GTO uses a unique breather tube.

I had previously understood that there were two types of breather tubes that fit all Pontiac V8 applications, and currently have both.

After realizing that the correct one for my Formula (a non-Ram Air car) was different that the one used with the Ram Air aircleaner, I looked for, and eventually found the style I needed - and I had thought this was the same style which the '74 GTO used.

One of my brothers has a '74 GTO, so I'm hoping to help him get a correct breather tube.

Any help would be appreciated.

__________________
1970 Formula 400
Carousel Red paint on Black standard interior
A no-engine, no-transmission, no-wheel option car.
Quite likely one of few '70 Muncie three speed Formula 400's left.


1991 Grand Am: 14.4 @ 93.7mph (DA corrected) (retired DD, stock appearing)
2009 Cobalt SS: 13.9 @ 103mph (current DD; makes something north of 300hp & 350ft/lbs)
1 Corinthians 2:12-14 / Ephesians 2: 8-9 / Luke 23: 39-43 / 2 Timothy 3:1-5;12
  #2  
Old 11-27-2021, 10:39 PM
74gto's Avatar
74gto 74gto is offline
Chief Ponti-yacker
 
Join Date: Mar 2001
Location: Roseville,mi.usa
Posts: 589
Default

They very well could be as the base is different from TA's I gave my buddy mine off my old 74 back in 1987. He ended up having it chromed. Would'nt work on his 69 RA III car. He gave it back to me!

__________________
74 GTO 406 T400
74 Firebird 350 4-speed
68 GTO Convertible 400 T400
76 GP LJ 400 4BBL T400
78 Chevy 1/2 Ton Truck
Oh yea I love my wife very much
For some reason it got erased when I put it here last time!!!!!! hmmmmmmmm
  #3  
Old 11-28-2021, 12:57 AM
unruhjonny's Avatar
unruhjonny unruhjonny is offline
Ultimate Warrior
 
Join Date: May 2004
Location: Calgary, AB, Canada
Posts: 5,396
Default

could you measure the upper flat section?
the diameter reduces where it's curved, so there is a perfectly round length in between the two turns.

The one I gave my brother, he gave back because it apparently doesn't reach far enough.

__________________
1970 Formula 400
Carousel Red paint on Black standard interior
A no-engine, no-transmission, no-wheel option car.
Quite likely one of few '70 Muncie three speed Formula 400's left.


1991 Grand Am: 14.4 @ 93.7mph (DA corrected) (retired DD, stock appearing)
2009 Cobalt SS: 13.9 @ 103mph (current DD; makes something north of 300hp & 350ft/lbs)
1 Corinthians 2:12-14 / Ephesians 2: 8-9 / Luke 23: 39-43 / 2 Timothy 3:1-5;12
  #4  
Old 11-28-2021, 03:29 PM
SD455DJ SD455DJ is offline
Ultimate Warrior
 
Join Date: Aug 2009
Location: Grand Rapids, MI
Posts: 2,620
Default

Jonny, Here's a couple pics of the one on my old '74 GTO...that I don't own any longer, but maybe this might help...

Dennis
Attached Thumbnails
Click image for larger version

Name:	74 GTO 350 Pass.jpg
Views:	99
Size:	79.3 KB
ID:	578743   Click image for larger version

Name:	Hood Scoop 1.jpg
Views:	96
Size:	68.4 KB
ID:	578744  

  #5  
Old 11-28-2021, 08:55 PM
Rusty77SE's Avatar
Rusty77SE Rusty77SE is offline
Junior Member
 
Join Date: Apr 2018
Location: Calgary, AB Canada
Posts: 6
Default

This is unruhjonnyís brother with the 74 GTO, Iím having a heck of a time finding a breather tube that works. My original one didnít come with the car. Iíll see about starting a post about trying to find one
Attached Thumbnails
Click image for larger version

Name:	6882F3F2-99CB-4B21-BCB9-9599AA18F712.jpg
Views:	86
Size:	49.2 KB
ID:	578762  

__________________
1977 Trans Am SE 4 spd
1974 GTO, hatchback, 4 spd
1989 K5 blazer
2013 Shelby GT500
  #6  
Old 12-17-2021, 11:35 AM
unruhjonny's Avatar
unruhjonny unruhjonny is offline
Ultimate Warrior
 
Join Date: May 2004
Location: Calgary, AB, Canada
Posts: 5,396
Default

@ Eric:

A friend just linked the following:

https://forums.maxperformanceinc.com...d.php?t=842270



That "Trans AM" tube looks like a dead ringer for the tubes shown on '74 GTO's earlier in this thread!

Then this (not from the linked thread):



That last image is for 1974 air cleaner part numbers;
It clearly shows the 1974 Trans Am (& SD455) "F/8 4 B.C. RAM AIR" shaker base is the same one as the 1974 GTO "X/8 4 B.C.-GTO"!

Although it's possible that the 1975+ shaker base was revised to use a different tube, for at least 1973 & 1974 the tube was specific to shakers!.

With this knowledge, I'd wager a that you can find one being reproduced!

So it looks like my collection of breather tubes does not include the 73-74 Trans Am breather tube - mystery solved!!

We would just need to verify that your car has the correct base - which I should be able to do easily enough;
If you have a latter base, then that means the "TA" breather tube was used for more years.

IIRC your '77 used the tube without the horizontal section - is that correct?
Attached Thumbnails
Click image for larger version

Name:	air cleaner bases.jpg
Views:	130
Size:	28.7 KB
ID:	579817  

__________________
1970 Formula 400
Carousel Red paint on Black standard interior
A no-engine, no-transmission, no-wheel option car.
Quite likely one of few '70 Muncie three speed Formula 400's left.


1991 Grand Am: 14.4 @ 93.7mph (DA corrected) (retired DD, stock appearing)
2009 Cobalt SS: 13.9 @ 103mph (current DD; makes something north of 300hp & 350ft/lbs)
1 Corinthians 2:12-14 / Ephesians 2: 8-9 / Luke 23: 39-43 / 2 Timothy 3:1-5;12
  #7  
Old 12-19-2021, 09:31 AM
77 Canamman's Avatar
77 Canamman 77 Canamman is offline
Ultimate Warrior
 
Join Date: Aug 2006
Location: PA
Posts: 3,930
Lightbulb

Quote:
Originally Posted by unruhjonny View Post
@ Eric:

IIRC your '77 used the tube without the horizontal section - is that correct?

__________________
1976 LeMans B09 Freeway Enforcer, 455/M40 Smokey

1977 Trans Am, 400/M21 Black/Gold Bandit. 44K actual miles

2017 Sierra SLT 1500 Z71 4X4

2019 Canyon SLT Crew 4X4

  #8  
Old 12-19-2021, 04:32 PM
unruhjonny's Avatar
unruhjonny unruhjonny is offline
Ultimate Warrior
 
Join Date: May 2004
Location: Calgary, AB, Canada
Posts: 5,396
Default

/\ thanks for that;
I don't know if he ever saw my post;
That confirms what I remember.

__________________
1970 Formula 400
Carousel Red paint on Black standard interior
A no-engine, no-transmission, no-wheel option car.
Quite likely one of few '70 Muncie three speed Formula 400's left.


1991 Grand Am: 14.4 @ 93.7mph (DA corrected) (retired DD, stock appearing)
2009 Cobalt SS: 13.9 @ 103mph (current DD; makes something north of 300hp & 350ft/lbs)
1 Corinthians 2:12-14 / Ephesians 2: 8-9 / Luke 23: 39-43 / 2 Timothy 3:1-5;12
The Following User Says Thank You to unruhjonny For This Useful Post:
Reply

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 08:06 PM.

 

About Us

The PY Online Forums is the largest online gathering of Pontiac enthusiasts anywhere in the world. Founded in 1991, it was also the first online forum for people to gather and talk about their Pontiacs. Since then, it has become the mecca of Pontiac technical data and knowledge that no other place can surpass.

 

Cold Case Radiators

Cold Case Radiators is a Max Performance company that produces high end aluminum performance radiators at a price point that won't break the bank. Polished and stamped tanks. 2 rows of 1" tubes. Lifetime Warranty.

GTOG8TA.com

GTOG8TA.com is a Max Performance company that manufacturers parts for the 04-06 GTO, 08-09 G8, and 93-02 Firebird/Trans Am platforms.

Copyright © 2017