clarify 302 main cap torque specs - Vintage Mustang Forums

Thread Tools
post #1 of 3 (permalink) Old 07-14-2012, 09:12 AM Thread Starter
Senior Member
dzahm's Avatar
Join Date: Sep 2010
Location: NC
Posts: 1,572
clarify 302 main cap torque specs

So I am replacing the rear main on a stock 83 302. It is on a stand, nothing special (no stroker etc) I see torq specs are 70, but 40 for the "outer mains" So I assume that is the first and last cap, with the center caps at 70, using 30 wgt oil on the threads. IIRC all other motors I messed with or rebuilt used the same specs across all the mains. (granted I am not a mechanic, so its not like I have built hundreds of motors- more like 5 or so) So in my limited knowledge this seemed a little odd, and I wanted the VMF's knowledge here, as I am aware of what the result is for over/undertorquing main caps.
dzahm is offline  
Sponsored Links
post #2 of 3 (permalink) Old 07-14-2012, 05:38 PM
Senior Member
Join Date: Jun 2004
Location: Columbia, SC
Posts: 8,137
Outer usually means the outer bolts on a four bolt main cap, from my experience.

1966 GT Fastback, restoration almost there! Code T Red with White LeMans stripes.
2015 GT Fastback - Deep Impact Blue
ScottsGT is offline  
post #3 of 3 (permalink) Old 07-14-2012, 06:22 PM
Senior Member
Join Date: Nov 2009
Location: Houston Heights, Texas
Posts: 671
Originally Posted by ScottsGT View Post
Outer usually means the outer bolts on a four bolt main cap, from my experience.
Scott is correct. All the main bolts on the stock 302 block are 70 ft./lbs torque.
Only difference would be ARP bolts or studs, then refer to ARP's recommended torque specs.
HoustonGlock is online now  
Sponsored Links

Quick Reply

Register Now

In order to be able to post messages on the Vintage Mustang Forums forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Please enter a password for your user account. Note that passwords are case-sensitive.


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:


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.

Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page

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 On
Trackbacks are On
Pingbacks are On
Refbacks are Off

For the best viewing experience please update your browser to Google Chrome