GM 400 cast crank question - Hot Rod Forum : Hotrodders Bulletin Board -- 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
lost password?   |   register now

LinkBack Thread Tools
  #1 (permalink)  
Old 10-24-2006, 07:13 PM
Registered User
Last photo:
Join Date: Nov 2005
Location: Ky.
Posts: 141
Wiki Edits: 0

Thanks: 7
Thanked 0 Times in 0 Posts
GM 400 cast crank question

2 GM cast 400 is ..010-.010 and the other is .020-.020. Will there be any difference in the amount of HP the .020-.020 will be able to handle over the .010 crank? I know it's a small amount, but it has to start making a difference at some point..............correct?

Reply With Quote Quick reply to this message
Sponsored Links
  #2 (permalink)  
Old 10-24-2006, 10:14 PM's Avatar
Last photo:
Join Date: May 2002
Location: Holly, michigan
Posts: 8,712
Wiki Edits: 0

Thanks: 64
Thanked 426 Times in 390 Posts
NONE whatsoever. The only (unproven) drawback to larger undersizes is a possible longer heat transfer time of the thicker bearing shells. Many of the high HP. engine builders are going to small sbc journal sizes (2.0") or Honda rod sizes etc. Less bearing speeds. Modern bearings can handle the extra loads.
Reply With Quote Quick reply to this message
  #3 (permalink)  
Old 10-25-2006, 08:23 AM Moderator

Last journal entry: PICTURE TEST
Last photo:
Join Date: Jan 2004
Location: york pa
Age: 53
Posts: 2,795
Wiki Edits: 0

Thanks: 0
Thanked 1 Time in 1 Post

No difference,,,,

The only thing that might be a tick different is if the crank grinder really knew what he was doing and put a nice radius on the rod journals,, then the .020" under might be a tick stronger,,,,,, But that would be splitting hairs!!!!

Reply With Quote Quick reply to this message
  #4 (permalink)  
Old 10-25-2006, 01:23 PM
johnsongrass1's Avatar
Race it, Don't rice it!
Last photo:
Join Date: Jul 2002
Location: Columbia, Mo
Age: 39
Posts: 4,775
Wiki Edits: 0

Thanks: 1
Thanked 118 Times in 103 Posts
It would break at the heavy balancer snout before the rod journal.
Reply With Quote Quick reply to this message

Recent Engine posts with photos
Gear in this thread - Powered by O'Reilly Auto Parts

Quick Reply

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:
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:
Please select your insurance company (Optional)


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
big block crank question chevelle4542speed Engine 3 07-11-2006 06:19 AM
forged crank question Ratoflic Engine 2 04-18-2006 05:50 AM
stock 400 crank 6speedwagon Engine 4 10-22-2003 06:39 PM
350 crank question stfinney Engine 4 12-03-2002 03:25 PM
Cast Crank Question NewmanZL1 Engine 2 06-04-2002 05:28 PM

All times are GMT -6. The time now is 06:42 PM.

Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2015, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0 PL2
Copyright 1999 - 2012. All Rights Reserved.