tri pwr / heads - Pontiac GTO Forum
User Tag List

 
LinkBack Thread Tools Display Modes
post #1 of 5 (permalink) Old 05-05-2012, 02:01 AM Thread Starter
 
Join Date: Jan 2010
Posts: 93
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
tri pwr / heads

Will a 66 tri power fit on code 62 (400) 1968 heads? If so what kind of performance improvement do think i will get due to having larger valves? Regards...
Gran Turismo is offline  
Sponsored Links
Advertisement
 
post #2 of 5 (permalink) Old 05-05-2012, 08:25 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: 118 Post(s)
Straight bolt-on deal. Good for a noticeable improvement in power over the Q-jet. A test was performed years ago on a '68-'69 GTO with all else being equal, and the tripower was good for a full half second gain in the 1/4 mile over the Q jet. And the Q-jet is a great set up. Go for it!
geeteeohguy is offline  
post #3 of 5 (permalink) Old 05-05-2012, 08:31 PM
 
Joe'sToy's Avatar
 
Join Date: Mar 2012
Location: Elora, Ontario Canada
Posts: 290
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 3 Post(s)
I have a '66 Tri-Power on my '68 400. It's all in my '65, I love the set-up, but I don't race it or anything, just love driving and cruising with it.
Joe'sToy is offline  
 
post #4 of 5 (permalink) Old 05-06-2012, 02:35 AM Thread Starter
 
Join Date: Jan 2010
Posts: 93
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
My mistake I worded the question incorrectly. What I meant to ask was do you think performance will improve with code 62 big valve heads on a 389 motor over the 66 gto head (slightly smaller valves). Tri power will be fitted aswell. Thanks again..
Combo's.
389 - tri pwr - 62 heads (big valves).?
389 - tri pwr - 77 heads.?
Gran Turismo is offline  
post #5 of 5 (permalink) Old 05-06-2012, 09:42 AM
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: 118 Post(s)
Stock for stock, maybe a little bit.
geeteeohguy is offline  
Sponsored Links
Advertisement
 
Reply

  Pontiac GTO Forum > The 1964-1974 Pontiac Tempest, Lemans & GTO > 1964-1974 Tempest, Lemans & GTO Complete Engine Compartment Discussion

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
edelbrock heads or 6x heads bobby326 1964-1974 Tempest, Lemans & GTO Complete Engine Compartment Discussion 10 08-23-2010 12:40 PM
67' 670 Heads zzomby 1964-1974 Tempest, Lemans & GTO Complete Engine Compartment Discussion 14 07-27-2010 09:57 AM
which heads to pic for my 400 bobby326 1964-1974 Tempest, Lemans & GTO Complete Engine Compartment Discussion 9 07-20-2010 05:12 PM
#96 heads or not? assasn2k 1964-1974 Tempest, Lemans & GTO Complete Engine Compartment Discussion 1 03-11-2009 06:42 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