Author Topic: 1968 z/28 pitman arm  (Read 7788 times)

john302

  • Member
  • ***
  • Posts: 367
    • View Profile
1968 z/28 pitman arm
« on: January 23, 2011, 05:14:51 AM »
Just removed a pitman from a manual steering 68 z and the part number is 3935075a is this original?It looks like it was never removed before and is from a real low milage original car. thanks John

dutch

  • Member
  • ***
  • Posts: 434
  • Documented Canadian 1968 Z/28
    • View Profile
Re: 1968 z/28 pitman arm
« Reply #1 on: January 23, 2011, 02:16:53 PM »
John:

I asked some similar questions over on the Team Camaro site regarding Z ed specific Pitman & Idler numbers - you may want to go to the attached link below and see what many other Z 2/8 owners over there responded with...
The thread was about Z 2/8 ownership and I guess I got them off topic about 8 or 9 pages into the thread with Piman questions...

Randy

http://www.camaros.net/forums/showthread.php?t=182224

68camaroz28

  • Hero Member
  • *****
  • Posts: 2226
    • View Profile
Re: 1968 z/28 pitman arm
« Reply #2 on: January 23, 2011, 04:53:39 PM »
Just removed a pitman from a manual steering 68 z and the part number is 3935075a is this original?It looks like it was never removed before and is from a real low milage original car. thanks John

John, our pitman arm is "3935075 A" as noted by the camaro.net link Randy supplied.
Chick
68 Z/28 NOR 01B Orig motor/trans/rear
69 Z/28 NOR 07A Orig Block & GM Cross-ram/carbs
69 L34 Rest. Nova Father/Son Car
69 L78 Surv Nova Purch 4/69 31K miles
67 L89 Corv Tribute
68 Corv 427/400 Orig motor
07 Corv Z06
R 68Z build- http://www.camaros.net/forums/showthread.php?t=182584

RonM

  • Member
  • ***
  • Posts: 66
    • View Profile
Re: 1968 z/28 pitman arm
« Reply #3 on: January 23, 2011, 07:58:49 PM »
Same pitman arm on my L30/M20. Hope this helps, RonM.

169INDY

  • Hero Member
  • *****
  • Posts: 1772
    • View Profile
Re: 1968 z/28 pitman arm
« Reply #4 on: May 09, 2022, 03:05:27 AM »
CRG INFO
"68
The 3908391 long pitman arm was used in 68 Z28's. Other 68 Camaros used the 3935075, 5.25" long, pitman arm (both manual and power steering). The idler arm for 68 was 3917581, 5.25" long."

Chick did this get figured out, My 68 Manual Z also has the 075 & from the .net thread quoted 'others' have reported the same.

Jim
Jim
68 SS/RS L35 Th-400 LOS
69 Pace Car L48 Th-350 LOS
68 Z28 M21 LOS

x66 714

  • Hero Member
  • *****
  • Posts: 1778
    • View Profile
Re: 1968 z/28 pitman arm
« Reply #5 on: May 09, 2022, 04:05:04 AM »
My original pitman arm on my Los Angeles built 1968 Z/28 is 3908391. Box is dated A 032 8. Manual steering...Joe
See America's First, Chevrolet

1968 Z/28 Corvette Bronze. Black Hounds Tooth. 02E Los Angeles born 3/13/1968 pnt OO. Purchased March 1976
1969 SS396 Yellow/Yellow 08E Norwood born 8/28/1969 pnt 76E. Purchased April 1981

cook_dw

  • Hero Member
  • *****
  • Posts: 3979
    • View Profile
Re: 1968 z/28 pitman arm
« Reply #6 on: May 09, 2022, 12:42:30 PM »
Build date - 12D
Plant - LOS
Steering arm - 391
Box - B 320 7 manual

68camaroz28

  • Hero Member
  • *****
  • Posts: 2226
    • View Profile
Re: 1968 z/28 pitman arm
« Reply #7 on: May 15, 2022, 11:27:06 AM »
CRG INFO
"68
The 3908391 long pitman arm was used in 68 Z28's. Other 68 Camaros used the 3935075, 5.25" long, pitman arm (both manual and power steering). The idler arm for 68 was 3917581, 5.25" long."

Chick did this get figured out, My 68 Manual Z also has the 075 & from the .net thread quoted 'others' have reported the same.

Jim
Hi Jim, sorry for late reply.... After confirming other Z/28's had the same 075 as mine I never worried or researched further. It seems both 3908391 & 3935075 were used but we know a lot of NOR cars had the 075 for whatever.
Our 68Z trim tag build date 01B
Plant-NOR
Steering Arm 3935075 A
Steering Box manual 3567 or 12/22/67
Chick
68 Z/28 NOR 01B Orig motor/trans/rear
69 Z/28 NOR 07A Orig Block & GM Cross-ram/carbs
69 L34 Rest. Nova Father/Son Car
69 L78 Surv Nova Purch 4/69 31K miles
67 L89 Corv Tribute
68 Corv 427/400 Orig motor
07 Corv Z06
R 68Z build- http://www.camaros.net/forums/showthread.php?t=182584

169INDY

  • Hero Member
  • *****
  • Posts: 1772
    • View Profile
Re: 1968 z/28 pitman arm
« Reply #8 on: March 16, 2023, 11:40:26 PM »
Found & Visited a Norwood 68 Z28 (FEB68) with the 075 B Pitman Arm
Jim
68 SS/RS L35 Th-400 LOS
69 Pace Car L48 Th-350 LOS
68 Z28 M21 LOS

KurtS

  • CRG Coordinator
  • *****
  • Posts: 5873
    • View Profile
Re: 1968 z/28 pitman arm
« Reply #9 on: March 17, 2023, 06:43:05 PM »
                                    Pitman       Idler       Steering arms
Darrell  12D LOS man  3908391     replaced                         
Jim       12D LOS man  3935075
Chick    01B NOR man  3935075  3741383     
Jeff       02D NOR man  3935075
Joe        03E LOS man  3908391
ggtsvnv 04A NOR man  3935075
never2  04D NOR man  3908391  3917581

Chick has a short pitman with a long idler.
never2many has a long pitman and a short idler.
Missing the logic so far. :)

We need more data - on all 3 components.
« Last Edit: March 23, 2023, 05:54:48 PM by KurtS »
Kurt S
CRG

cook_dw

  • Hero Member
  • *****
  • Posts: 3979
    • View Profile
Re: 1968 z/28 pitman arm
« Reply #10 on: March 17, 2023, 10:50:21 PM »
FYI.


JohnKY

  • Member
  • ***
  • Posts: 64
    • View Profile
Re: 1968 z/28 pitman arm
« Reply #11 on: March 22, 2023, 01:45:59 AM »
Is the different length pitman arm the way they differentiated between regular, and quick ratio steering?

KurtS

  • CRG Coordinator
  • *****
  • Posts: 5873
    • View Profile
Re: 1968 z/28 pitman arm
« Reply #12 on: March 22, 2023, 09:07:36 PM »
Steering arm - 391
Do you mean pitman, idler, or steering arm??  I thought steering arm, but now I think you meant pitman.
Kurt S
CRG

cook_dw

  • Hero Member
  • *****
  • Posts: 3979
    • View Profile
Re: 1968 z/28 pitman arm
« Reply #13 on: March 23, 2023, 03:19:11 AM »
Yeah my fault. I meant pitman.

KurtS

  • CRG Coordinator
  • *****
  • Posts: 5873
    • View Profile
Re: 1968 z/28 pitman arm
« Reply #14 on: March 23, 2023, 05:59:42 PM »
Realizing we had a terminology problem.
Pitman - attached to steering box
Idler - attached to subframe, mirrors the pitman
Steering arms - connected to the outer tie rod and attached to the hub assembly, we haven't posted data on them, but there are several versions.
Kurt S
CRG