Pontiac - Street No question too basic here!

          
Reply
 
Thread Tools Display Modes
  #1  
Old 08-02-2023, 01:06 PM
rolling money pits's Avatar
rolling money pits rolling money pits is offline
Ultimate Warrior
 
Join Date: Jan 2005
Posts: 1,558
Default Head bolt pattern/spacing

Anyone have a diagram or photo of head bolt the pattern with spacing between the bolts? I’m making a TDC stop and forgot my head gasket…
Thx

__________________
costs too much
  #2  
Old 08-02-2023, 02:34 PM
Dragncar Dragncar is offline
Ultimate Warrior
 
Join Date: Mar 2004
Location: Humbolt County California
Posts: 8,356
Default

The one I made I drilled two 5/8" holes 6 1/4" apart and it worked fine. Drilled a 5/16" hole and tapped it 3/8 x 16 for the stop bolt.

  #3  
Old 08-02-2023, 02:43 PM
tc's Avatar
tc tc is offline
Chief Ponti-yacker
 
Join Date: Dec 2004
Location: Iowa
Posts: 803
Default

I do. I'll upload a pic after work.

  #4  
Old 08-02-2023, 04:29 PM
tc's Avatar
tc tc is offline
Chief Ponti-yacker
 
Join Date: Dec 2004
Location: Iowa
Posts: 803
Default

here it is
Attached Thumbnails
Click image for larger version

Name:	p.jpg
Views:	59
Size:	38.9 KB
ID:	617293  

  #5  
Old 08-02-2023, 04:33 PM
tc's Avatar
tc tc is offline
Chief Ponti-yacker
 
Join Date: Dec 2004
Location: Iowa
Posts: 803
Default

closer
Attached Thumbnails
Click image for larger version

Name:	pp.jpg
Views:	48
Size:	41.8 KB
ID:	617294  

  #6  
Old 08-02-2023, 05:42 PM
Formulas Formulas is offline
Ultimate Warrior
 
Join Date: Dec 2004
Posts: 2,673
Default

About 6.1 ctc this direction..

If your off a touch a rat tail file will make it right

for the stop bolt i welded a 1/2 nut to 1/4 thick band stock with a 1/2 hole in it

also rouned the face of the stop bolt

.

__________________
A man who falls for everything stands for nothing.

Last edited by Formulas; 12-17-2023 at 10:10 AM.
  #7  
Old 08-02-2023, 05:46 PM
Schurkey Schurkey is offline
Ultimate Warrior
 
Join Date: Aug 2002
Location: The Seasonally Frozen Wastelands
Posts: 5,918
Default

Make the head-bolt holes slotted (at least one of them) so the tool can be used on multiple brands of engines, or shifted side-to-side to avoid piston domes/dishes.

  #8  
Old 08-02-2023, 07:58 PM
Gach's Avatar
Gach Gach is offline
Ultimate Warrior
 
Join Date: May 2000
Location: R. I.
Posts: 4,595
Default

You can buy them on Amazon $15.00

https://a.co/d/1bC5Zzm

  #9  
Old 08-03-2023, 08:13 AM
Half-Inch Stud's Avatar
Half-Inch Stud Half-Inch Stud is offline
Ultimate Warrior
 
Join Date: Jul 2000
Location: BlueBell, PA or AL U.S.A.
Posts: 18,480
Default

A spare 4-Bolt Main Cap works well.

Reply


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 08:12 AM.

 

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.

 




Copyright © 2017