Main Caps Bolts - 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> Engine
User Name
Password
lost password?   |   register now

Reply
 
LinkBack Thread Tools
  #1 (permalink)  
Old 04-23-2010, 11:15 AM
Member
 
Last photo:
Join Date: Mar 2002
Location: Texas
Posts: 192
Wiki Edits: 0

Thanks: 0
Thanked 1 Time in 1 Post
Main Caps Bolts

I have a 60 283 and a 64 327. The 283 has a 7 qt oil pan with a windage tray that I would like to put on the 327. When I went to swap the pans, I also need to to swap the main cap bolts from the 283 for the windage tray but they were too short for the 327 by about a half inch. Now I want to order new main cap bolts for both the 283 without a windage tray and a 327 with a windage tray and I do not know what to order. Are the 327 main cap bolts longer or are my 327 main cap bolts longer because it is perhaps a large Journal?

    Advertisement
Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
  #2 (permalink)  
Old 04-23-2010, 11:31 AM
DoubleVision's Avatar
Not Considered a Senior Member
 
Last photo:
Join Date: Oct 2002
Location: Heart Of Dixie
Age: 40
Posts: 10,658
Wiki Edits: 0

Thanks: 15
Thanked 60 Times in 57 Posts
There shouldn`t be any difference. Large journals didn`t come along until 1968. What`s the casting numbers for both your engines? Check the main caps on both engines and see if there`s any difference in there height.
Reply With Quote Quick reply to this message
  #3 (permalink)  
Old 04-23-2010, 12:22 PM
Member
 
Last photo:
Join Date: Mar 2002
Location: Texas
Posts: 192
Wiki Edits: 0

Thanks: 0
Thanked 1 Time in 1 Post
64 327 - #3959512
60 283 - #3756519
Reply With Quote Quick reply to this message
  #4 (permalink)  
Old 04-23-2010, 12:26 PM
DoubleVision's Avatar
Not Considered a Senior Member
 
Last photo:
Join Date: Oct 2002
Location: Heart Of Dixie
Age: 40
Posts: 10,658
Wiki Edits: 0

Thanks: 15
Thanked 60 Times in 57 Posts
Your casting numbers show both engines are small journal blocks so there shouldn`t be any difference in the bolt lenths or the main cap height.
Reply With Quote Quick reply to this message
  #5 (permalink)  
Old 04-23-2010, 12:33 PM
Member
 
Last photo:
Join Date: Mar 2002
Location: Texas
Posts: 192
Wiki Edits: 0

Thanks: 0
Thanked 1 Time in 1 Post
Thanks for the info, but when I tried to transfer the main cap bolt (same bolt location) from the 283 to the 327, it was too short to reach any threads. Do you happen to know what length they should be?
Reply With Quote Quick reply to this message
  #6 (permalink)  
Old 04-23-2010, 01:32 PM
cobalt327's Avatar
WFO
 
Last wiki edit: Intake manifold
Last journal entry: 1980 Malibu Wagon
Last photo:
Join Date: Mar 2009
Location: Atlanta
Age: 59
Posts: 5,037
Wiki Edits: 1616

Thanks: 128
Thanked 597 Times in 546 Posts
For two bolt SBC main caps, there are only 2 lengths- for SJ and LJ (including the 400 SBC).

A LJ bolt measures 3-3/8" from the end to the underside of the hex head.

Are you sure you don't have the head bolts mixed up in the main cap bolts? lol

Last edited by cobalt327; 04-23-2010 at 01:52 PM.
Reply With Quote Quick reply to this message
  #7 (permalink)  
Old 04-23-2010, 01:47 PM
cobalt327's Avatar
WFO
 
Last wiki edit: Intake manifold
Last journal entry: 1980 Malibu Wagon
Last photo:
Join Date: Mar 2009
Location: Atlanta
Age: 59
Posts: 5,037
Wiki Edits: 1616

Thanks: 128
Thanked 597 Times in 546 Posts
FWIW, the LJ block has 1-3/8" of bolt extending below the bottom of the main cap.

So if you were to measure the main cap of the SJ block from the bolt pad to the bottom of the cap and add about 1-3/8", this should be very close to the bolt length required for the SJ caps.
Reply With Quote Quick reply to this message
  #8 (permalink)  
Old 04-24-2010, 07:08 AM
Member
 
Last photo:
Join Date: Mar 2002
Location: Texas
Posts: 192
Wiki Edits: 0

Thanks: 0
Thanked 1 Time in 1 Post
Quote:
Originally Posted by cobalt327
For two bolt SBC main caps, there are only 2 lengths- for SJ and LJ (including the 400 SBC).

A LJ bolt measures 3-3/8" from the end to the underside of the hex head.

Are you sure you don't have the head bolts mixed up in the main cap bolts? lol
I just dropped the pan on the 327. Below is a picture of one of the main cap bolts. So I guess that from your measurements, I have a LJ crank and the 283 is a SJ?

Reply With Quote Quick reply to this message
  #9 (permalink)  
Old 04-24-2010, 12:17 PM
cobalt327's Avatar
WFO
 
Last wiki edit: Intake manifold
Last journal entry: 1980 Malibu Wagon
Last photo:
Join Date: Mar 2009
Location: Atlanta
Age: 59
Posts: 5,037
Wiki Edits: 1616

Thanks: 128
Thanked 597 Times in 546 Posts
Quote:
Originally Posted by wally
I just dropped the pan on the 327. Below is a picture of one of the main cap bolts. So I guess that from your measurements, I have a LJ crank and the 283 is a SJ?

That looks like that's the deal. ALL 283's are SJ, BTW. The 327 can be either. But in your particular case, the 327 is a LJ.

Good luck.
Reply With Quote Quick reply to this message
  #10 (permalink)  
Old 04-24-2010, 05:59 PM
Member
 
Last photo:
Join Date: Mar 2002
Location: Texas
Posts: 192
Wiki Edits: 0

Thanks: 0
Thanked 1 Time in 1 Post
Quote:
Originally Posted by cobalt327
That looks like that's the deal. ALL 283's are SJ, BTW. The 327 can be either. But in your particular case, the 327 is a LJ.

Good luck.
Today was a good day! Local machine shop had some LJ bolts wih studs for windage tray. Got everything back togeather and so far no leaks



Only thing left is to find some SJ bolts.
Reply With Quote Quick reply to this message

Recent Engine 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:
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
"Basics of Basics" Nuts and bolts MARTINSR Hotrodding Basics 10 06-28-2010 05:38 PM
sbc build. dressing for main bolts? callmejavier Engine 6 06-29-2008 10:47 AM
Need help with main caps Monster_215 Engine 4 05-19-2008 04:57 PM
Stock main cap bolts BringBackTheCamaro Engine 2 03-09-2006 01:36 PM
Windage trays....... onebadmerc Engine 70 01-04-2005 06:57 AM


All times are GMT -6. The time now is 01:13 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.