stock 400 SBC crank in a 383 turned .030 on rods - 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 04-15-2006, 06:49 PM
Registered User
Last photo:
Join Date: Nov 2005
Location: Ky.
Posts: 141
Wiki Edits: 0

Thanks: 7
Thanked 0 Times in 0 Posts
stock 400 SBC crank in a 383 turned .030 on rods

Is this too much to be used in a street strip engine? It is a stock 400 crank turned to fit a 350 block, plus .020 more on the mains and .030 on the rods. What might be the RPM and or HP limits? Thanks

Reply With Quote Quick reply to this message
Sponsored Links
  #2 (permalink)  
Old 04-15-2006, 07:01 PM
Jmark's Avatar
Last photo:
Join Date: Sep 2003
Location: phoenix
Age: 62
Posts: 5,033
Wiki Edits: 0

Thanks: 124
Thanked 103 Times in 83 Posts
I recently asked my machinist if my 400 crank could go 40/40 to save it and he said sure, do it all the time. Apparently there is plenty of meat on the 400 crank for major turning.
Reply With Quote Quick reply to this message
  #3 (permalink)  
Old 04-16-2006, 03:56 AM's Avatar
Last photo:
Join Date: May 2002
Location: Holly, michigan
Posts: 8,618
Wiki Edits: 0

Thanks: 61
Thanked 402 Times in 368 Posts
Some of the "good ole boys" claim that the thicker bearing shells on undersized bearings blocks good heat transfer to the rod/main bores.

Personally I have run .030 under bearings on race small blocks with no adverse effects. One with .040 rods. I also have .060 under bearings in inventory. Next undersize is small journal std. and thats been done MANY times..
Reply With Quote Quick reply to this message

Recent Engine posts with photos

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
400 Sbc With 350 Crank Six Inch Rods blown volvo Engine 53 02-17-2006 10:36 AM
.60 over 383 SBC Questions Mustangsaly Engine 8 06-28-2005 12:18 PM
383 Crank Hits Pistons 68NovaSS Engine 17 08-09-2004 02:33 AM
how much will stock rods and crank take? nastynova Engine 7 12-30-2002 05:03 PM
350 rods in a 400 sbc Bandeezee Engine 4 12-11-2002 05:51 PM

All times are GMT -6. The time now is 07:55 AM.

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.