| FAQ |
| Members List |
| Social Groups |
| Calendar |
| Search |
| Today's Posts |
|
#1
12-07-2021, 10:04 AM
|
||||
|
||||
65 GTO round port tri-y headers?
Does anyone make these and/or have them? Been reading about different header designs and kind of curious how they would do in my car. I read somewhere that four into one headers tend to do better with tighter lobe separation and make more power at higher RPM, and tri-y do better with wider lobe sep and make more power at lower RPM.
My 505 has the original OF cam which I think is on a 112, and I have the rev limiter set at 5500. So thinking maybe I can get a little more power where I need it and keep the rev limiter set where I won’t blow the engine up any time soon 
|
|
#2
12-07-2021, 10:42 AM
|
||||
|
||||
|
Ken Crocie (HO Racing) should be able to comment on his Tri-Y Headers.
Tom V
__________________
"Engineers do stuff for reasons" Tom Vaught Despite small distractions, there are those who will go Forward, Learning, Sharing Knowledge, Doing what they can to help others move forward. |
|
#3
12-07-2021, 11:08 AM
|
|||
|
|||
|
You can bite the bullet and have custom made one made on the car.EVERYTHING fits that way!Not for the weak of wallet.My last set was 3K coated.Tom
|
| The Following User Says Thank You to tom s For This Useful Post: | ||
|
#4
12-07-2021, 11:33 AM
|
||||
|
||||
|
Where are you located Steve?
McCabe up the street from me (retired Nascar header fabricator) does custom headers for everything. Beautiful work but spendy $$ |
|
#5
12-07-2021, 11:48 AM
|
||||
|
||||
|
The 455 I have ion the stand when I dyno it will teat my Hooker 2", vs Hedman 1 3/4-1 7/8 and the Tribal Tubes Tri Ys. If I can ever get a freaking day off!
Roger Bollinger had the Tribals on his road race Trans Am in Germany.
__________________
Skip Fix 1978 Trans Am original owner 10.99 @ 124 pump gas 455 E heads, NO Bird ever! 1981 Black SE Trans Am stockish 6X 400ci, turbo 301 on a stand 1965 GTO 4 barrel 3 speed project 2004 GTO Pulse Red stock motor computer tune 13.43@103.4 1964 Impala SS 409/470ci 600 HP stroker project 1979 Camaro IAII Edelbrock head 500" 695 HP 10.33@132 3595lbs |
|
#6
12-07-2021, 02:28 PM
|
||||
|
||||
|
I am in Spokane WA. Not really looking to spend big $, I was just curious whether anything is even available. I have plenty of other things to spend money on
 Skip I'd love to see how that test turns out, please share whenever those results are available! |
| Reply |
|
|
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.
Linear Mode
