| FAQ |
| Members List |
| Social Groups |
| Calendar |
| Search |
| Today's Posts |
|
#1
05-28-2022, 02:39 PM
|
||||
|
||||
1965 GTO 4 speed with Doug's headers z-bar issue
Hi, NEED HELP!!!!!!
Putting the 4 speed back in my 65 GTO and have Doug's round port headers installed. Doug's states that the headers will work with 4 speed floor shift and should use the factory z-bar. I have the factory z-bar but the lower lever of the z-bar will not clear the last header tube. I am on the ball stud as far as I can go but the lever is hitting the last tube by about 1/4" so the z-bar will not rotate. What is wrong and what can I do to fix? Thanks for your help, Mark
__________________
1965 GTO: 467 (Built By Dan Willever), 400 Block, Eagle 4.25 Stroke, Eagle 6.8 Rods, BRC Pistons, Custom Grind Hydraulic Roller Cam, Edelbrock 72cc Heads Ported, HS Rockers, Doug's Headers, Edelbrock Victor 4150, QTF 850 Carb, AutoGear M22 4 Speed, SPEC Clutch and Pressure Plate, 12 Bolt 3:73 Posi. 
|
|
#2
05-28-2022, 06:16 PM
|
||||
|
||||
|
I had to find another Z-Bar and remove the lever that interfered and move it so that it cleared. Then I used a Heim pivot mounted on the Z-Bar to push the clutch fork rod, (to correct for the offset). 64 GTO body and Muncie trans at the time.
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
05-28-2022, 11:47 PM
|
||||
|
||||
|
I think you have to use the later '68-'72 Z-bar for your car that had the bolt into the block for those headers instead of the screw in stud/ball. I remember reading something like that years ago but I'm not sure now.
__________________
1967 Firechicken, 499", Edl heads, 262/[email protected]" duration and 0.627"/0.643 lift SR cam, 3.90 gear, 28" tire, 3550#. [email protected] mph with a 1.45 60'. Still WAY under the rollbar rule. |
| The Following User Says Thank You to AG For This Useful Post: | ||
|
#4
05-29-2022, 08:08 AM
|
||||
|
||||
|
Doug's has a disclaimer on their site about this. You need the later Z-bar to clear like AG mentioned
|
| The Following User Says Thank You to Scott Stoneburg For This Useful Post: | ||
|
#5
05-29-2022, 08:49 PM
|
||||
|
||||
|
i put doug’s headers in half dozen early gto never had a problem last 2 sets within last 2 yrs i had to cut lever off zbar and weld . they changed there design
__________________
2008KRE Q16 Winner 2014 atco raceway doorslammer winner 86 grand am tube car 8.95 @152 455 eheads solid flat tappet cam Hoffman Racing building and racing Pontiacs for 35 years |
|
#6
05-30-2022, 09:39 AM
|
|||
|
|||
|
Does anybody know if the Doug’s D-ports have the same problem? Thinking of getting a set for my 65.
|
|
#7
05-30-2022, 08:15 PM
|
||||
|
||||
|
Quote:
__________________
62' Lemans, Nostalgia Super Stock, 541 CI, IA2 block, billet 4.5" crank, Ross, Wide port Edelbrocks, Gustram intake, 2 4150 style BLP carbs, 2.10 Turbo 400, 9" w/4:30 gears, 8.76 @153, 3100lbs |
|
#8
05-30-2022, 09:56 PM
|
||||
|
||||
|
Can you cut and reroute one tube?
__________________
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 [email protected] 1964 Impala SS 409/470ci 600 HP stroker project 1979 Camaro IAII Edelbrock head 500" 695 HP 10.33@132 3595lbs 1964 Corvette Coupe 327 4 speed |
|
#9
06-04-2022, 09:15 PM
|
||||
|
||||
|
I managed to get the original z-bar in with the doug's round port headers. I removed all the screws from the headers so they were not attached to the block anymore. I pulled the bolt from the drivers side motor mount and jacked up the motor. At this point I was able to get the z-bar on the block ball and get it around the header tube. I also had to remove the zerk fitting on the z-bar because that faced down and stopped the header from tightening against the head.
Block is bolted back down to the frame, headers are bolted back to the head and z-bar moves with no issues. Thanks for the suggestions Mark
__________________
1965 GTO: 467 (Built By Dan Willever), 400 Block, Eagle 4.25 Stroke, Eagle 6.8 Rods, BRC Pistons, Custom Grind Hydraulic Roller Cam, Edelbrock 72cc Heads Ported, HS Rockers, Doug's Headers, Edelbrock Victor 4150, QTF 850 Carb, AutoGear M22 4 Speed, SPEC Clutch and Pressure Plate, 12 Bolt 3:73 Posi.
|
|
#10
06-05-2022, 10:32 AM
|
||||
|
||||
|
Quote:
on my 64 GTO. NOT Doug's headers. Sorry for the incorrect info on this Dougs headers thread. 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. |
| 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
