Torque Specs Chevy 350 - Hot Rod Forum : Hotrodders Bulletin Board
Hotrodders.com -- Hot Rod Forum



Register FAQ Search Today's Posts Unanswered Posts Auto Escrow Insurance Auto Loans
Hot Rod Forum : Hotrodders Bulletin Board > Tech Help> Hotrodding Basics
User Name
Password
lost password?   |   register now

Reply
 
LinkBack Thread Tools
  #1 (permalink)  
Old 04-28-2006, 09:29 AM
Knuckles El Creep's Avatar
62 Studebaker Lark w/Chevy 350
 
Last photo:
Join Date: Apr 2006
Location: Las Vegas, NV
Posts: 7
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
Torque Specs Chevy 350

Hi I need to know the torque specs for the rocker arms on a small block Chevy 350. Is there a certain pattern? I've seen specs on the rocker studs but nothing on the rocker arm nuts. I've also heard something about tightening them until there is no more play in the push rod, and then 3/4 turn. In what direction I dont know.

Last edited by Knuckles El Creep; 04-28-2006 at 10:41 AM.
Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
  #2 (permalink)  
Old 04-28-2006, 09:53 AM
home brew's Avatar
Hotrodders.com Moderator
 
Last wiki edit: Body and exterior tips Last photo:
Join Date: Feb 2005
Location: Pense, Sk, Canada
Age: 68
Posts: 7,050
Wiki Edits: 1

Thanks: 0
Thanked 0 Times in 0 Posts
Torque Specs Chevy 350

Good place to check out:

http://www.boxwrench.net/specs/chevy_sb.htm
Reply With Quote Quick reply to this message
  #3 (permalink)  
Old 04-28-2006, 07:04 PM
HUH?'s Avatar
Registered User
 
Last photo:
Join Date: Oct 2005
Location: Illinois
Age: 62
Posts: 60
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
Rocker arm adjustment

You can adjust hydraulic lifters with the motor running or not running. You
will need some sort of oil control device to do it with the motor running. The
most accurate way with the motor off is one cylinder at a time with the
cylinder on the compression stroke. There is also a way to do part of the
valves then rotate the engine 360 degrees and do the rest. That method
escapes me. (Can anyone refresh me?) The adjustment is the same in all
cases. Find zero lash and tighten 1/2 to one full turn more.



http://www.picturetrail.com/yelrah_dave
Reply With Quote Quick reply to this message
  #4 (permalink)  
Old 04-28-2006, 10:36 PM
Siggy_Freud's Avatar
Hotrodders.com Moderator
 
Last photo:
Join Date: Dec 2003
Location: Portland, Oregon
Age: 29
Posts: 2,371
Wiki Edits: 0

Thanks: 0
Thanked 1 Time in 1 Post
If you do a search in the knowledge base or using the search function on adjusting rocker arms, you'll find all you need to know on it. If you still have questions, come back and ask .

Dylan.
__________________
Bringing history and technology together.
Reply With Quote Quick reply to this message
  #5 (permalink)  
Old 04-29-2006, 02:09 AM
malc's Avatar
Born To Be Mild
 
Last photo:
Join Date: Jun 2003
Location: Espaņa Right Coast
Age: 63
Posts: 3,197
Wiki Edits: 0

Thanks: 61
Thanked 54 Times in 52 Posts
This is the method I use.
Reply With Quote Quick reply to this message
  #6 (permalink)  
Old 04-30-2006, 09:56 AM
Registered User
 
Join Date: Apr 2006
Location: South Carolina
Posts: 14
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
small block chevy

Hey dude, it has been years since i worked in chevy dealership but i prefered engine work when i was there. I did it so much i got lazy and would run the nut down about a half inch in each stud. Regaurdless of which pistion was up, knowing that about half thread is what itis going to end up with anyway. From that point the valves were tight enough to allow the engine to run but i had chatter on all the rockers. Then i would turn then slowly crank down until the engine started missing, At that time back off just a little and leave it there. move on to the next. (this only works if you have hydrolic lifters that have been pumped up) this is the fasted way i found.
Reply With Quote Quick reply to this message
  #7 (permalink)  
Old 04-30-2006, 10:10 AM
malc's Avatar
Born To Be Mild
 
Last photo:
Join Date: Jun 2003
Location: Espaņa Right Coast
Age: 63
Posts: 3,197
Wiki Edits: 0

Thanks: 61
Thanked 54 Times in 52 Posts
Are you a technical writer for Haynes or Chiltern ?
Reply With Quote Quick reply to this message
  #8 (permalink)  
Old 04-30-2006, 11:45 AM
malc's Avatar
Born To Be Mild
 
Last photo:
Join Date: Jun 2003
Location: Espaņa Right Coast
Age: 63
Posts: 3,197
Wiki Edits: 0

Thanks: 61
Thanked 54 Times in 52 Posts
For HUH?, set the number one cylinder at TDC firing position and set the exhaust valves on cylinders,1, 3, 4, 8 and the intakes on,1, 2, 5, 7.
Rotate the crank 360š and set the exhaust valves on cylinders, 2, 5, 6, 7 and the intakes on, 3, 4, 6, 8.
According to Chiltern, Haynes left out number 1 cylinder in theirs.
BTW for Chevy.
Edit: Preload, Chiltern says 1 1/2 turns in and Haynes reckons 1.
Reply With Quote Quick reply to this message
  #9 (permalink)  
Old 04-30-2006, 07:06 PM
HUH?'s Avatar
Registered User
 
Last photo:
Join Date: Oct 2005
Location: Illinois
Age: 62
Posts: 60
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
Thanks malc

malc,

Thanks for your reply on setting valve lash. Your method is fast and
plenty accurate enough for hydraulic lifters. When you pass fifty years of age
you lose many things. Memory is usually the second, I can't really remember the first!

Dave
Reply With Quote Quick reply to this message
  #10 (permalink)  
Old 05-01-2006, 11:48 AM
xntrik's Avatar
Save a horse, Ride a Cowboy.
 
Last photo:
Join Date: Jul 2005
Location: Arkansas
Posts: 5,131
Wiki Edits: 0

Thanks: 0
Thanked 1 Time in 1 Post
Obvioiusly most people are concentrating on lash adjustment.

The rocker arm nut still requires TORQUE.

If the self-locking nut has insufficient torque the adjustment will not stay constant.

Look for about 10-15 lb/ft torque on the nut-to-thread drag.
Reply With Quote Quick reply to this message
  #11 (permalink)  
Old 05-01-2006, 12:22 PM
malc's Avatar
Born To Be Mild
 
Last photo:
Join Date: Jun 2003
Location: Espaņa Right Coast
Age: 63
Posts: 3,197
Wiki Edits: 0

Thanks: 61
Thanked 54 Times in 52 Posts
Donīt you mean rocker arm stud ?
Reply With Quote Quick reply to this message
  #12 (permalink)  
Old 12-15-2012, 04:46 PM
Member
 
Last photo:
Join Date: Feb 2004
Location: N Ga.
Posts: 272
Wiki Edits: 0

Thanks: 3
Thanked 5 Times in 5 Posts
Quote:
Originally Posted by malc View Post
Donīt you mean rocker arm stud ?
I think he's talkin' about the nuts. If the torque is less, replace the nut as the self locking feature has been compromised.
Reply With Quote Quick reply to this message
  #13 (permalink)  
Old 12-15-2012, 08:27 PM
327NUT's Avatar
Registered User
 
Last photo:
Join Date: Dec 2004
Location: So. Utah
Age: 67
Posts: 3,180
Wiki Edits: 0

Thanks: 0
Thanked 58 Times in 52 Posts
Hey st3.....good info but the thread is 6 yrs old.
Reply With Quote Quick reply to this message

Recent Hotrodding Basics posts with photos

Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the Hot Rod Forum : Hotrodders Bulletin Board forums, you must first register.
Please enter your desired user name (usually not your first and last name), your email address and other required details in the form below.
User Name:
If you do not want to register, fill this field only and the name will be used as user name for your post.
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:

Log-in

Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.




Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools

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


Similar Threads
Thread Thread Starter Forum Replies Last Post
El Camino Engine - 350 Chevy or 455 Pontiac bjam2 Engine 16 08-07-2007 03:45 PM
El Camino Engine - 350 Chevy or 455 Pontiac bjam2 Engine 17 01-06-2007 09:11 PM
Turbocharging a 350 chevy radracer43 Engine 4 09-25-2005 07:30 PM
torque specs for a flex plate on a chevy 350 to auto tranny badk5 Engine 1 07-01-2005 06:56 AM
torque specs. , 88' chevy 350 leonard69 Engine 1 05-27-2005 11:30 AM


All times are GMT -6. The time now is 03:28 PM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0 PL2
Copyright Hotrodders.com 1999 - 2012. All Rights Reserved.