Mopar 400B Which is better 72 or 76?? - 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 12-26-2007, 08:16 PM
MOTOR HEAD's Avatar
Born to Wrench
 
Join Date: Dec 2007
Location: Ohio
Age: 41
Posts: 31
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
Mopar 400B Which is better 72 or 76??

Ok , here's the deal , I'm gonna stuff one of these 400B blocks in my 84 Dodge 4x4. One is a 1972 , the other is a 1976. Both are in great shape and would make a solid foundation to build on. (But) I have heard that (some) yrs of 400B (and also) 440RB are a little thinner than the others. I plan on building the 400B stroker that I've heard is a real power builder , just looking for some input from someone who has done one of these 400B strokers. Thanks!! Motorhead

    Advertisement
Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
  #2 (permalink)  
Old 12-26-2007, 08:54 PM
SSedan64's Avatar
Registered User
 
Last photo:
Join Date: Dec 2007
Location: Macon, GA.
Age: 50
Posts: 6,016
Wiki Edits: 0

Thanks: 0
Thanked 46 Times in 46 Posts
400b

I can't remember for sure but I'm thinking 71 or 72 had the thickest blocks. I have a 71 400B from a Chrysler Newport. CarCraft or HotRod Mag did a buildup of this engine using Chevy 454 rods, custom pistons & Mopar 440 crank with mains machined smaller. Came out to be 454c.i. Try searching one of their websites for the story. I like the 400B because of the bigger bore than the 440RB.
Reply With Quote Quick reply to this message
  #3 (permalink)  
Old 12-26-2007, 08:59 PM
Stroke Meister
 
Last photo:
Join Date: Mar 2007
Location: MI, USA
Posts: 704
Wiki Edits: 0

Thanks: 0
Thanked 1 Time in 1 Post
http://www.440source.com/blockinfo.htm

Good move.

Quote:
One is a 1972 , the other is a 1976. Both are in great shape and would make a solid foundation to build on. (But) I have heard that (some) yrs of 400B (and also) 440RB are a little thinner than the others

a 3614230 (1972-73) 400 block. These are the thickest of any blocks around, bar none

440 Source has what you need.
Reply With Quote Quick reply to this message
  #4 (permalink)  
Old 12-26-2007, 11:06 PM
charger528's Avatar
Registered User
 
Last photo:
Join Date: Sep 2007
Location: brockton ma.
Age: 44
Posts: 146
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
the 72 block is better you can go easily out to 512 with a 440 source kit

I just finished putting together a 528cid using one of thier kits the kit cost me under $2000 even with the rod option and computer balanceing if you want a closer look at the kit ck my threads.

I posted pics of the internals

posts
inside the beast 440 chrysler strocked to 528cid
Reply With Quote Quick reply to this message
  #5 (permalink)  
Old 12-27-2007, 11:28 AM
MOTOR HEAD's Avatar
Born to Wrench
 
Join Date: Dec 2007
Location: Ohio
Age: 41
Posts: 31
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
72 or 76 400B which is better?

Thanks for all the input guys , I really appreciate it. Now here is another question! I know that with just stock mopar stuff the interchange between the stock pieces can vary engine displacement upto 100 cubes or more.So, I'm wondering.... I have (stuffed in the corner) a 63 413RB , this encountered some cylinder issues and is pretty much done. But the bottom end is still A-1. I could put that crank in the 400B right fella's? , just have the mains turned down to 2.625-in. and use the 413RB rods.Just wanna try to use up some of this original stuff I have laying around. Also , the 413RB has #516 heads on it , these will probably be better than the 400B's #452..just have smaller cooling passages? Thanks again guys , I'm gonna goto 440 source now and look around!! Motorhead
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
AMC a Mopar? Stop the nonsense! SpiritRT Hotrodders' Lounge 19 09-12-2012 04:05 AM
72 camaro subframe in my 72 nova 396nova Suspension - Brakes - Steering 4 07-09-2011 04:58 AM
performer rpm or mopar perf 440 intake? TRLBLAZR60 Engine 35 11-10-2007 01:50 AM
trading a stripped 72 espirt for a 72 grandville legionlleh Off-Topic 3 02-10-2007 06:40 PM
*Help* 72 Chevy P/U with Step Side Box *Help* Mustangsaly General Rodding Tech 8 01-20-2006 08:07 PM


All times are GMT -6. The time now is 12:28 AM.


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.