emgine overhaul - 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> Hotrodding Basics
User Name
Password
lost password?   |   register now

Reply
 
LinkBack Thread Tools
  #1 (permalink)  
Old 01-16-2012, 01:40 PM
Registered User
 
Join Date: Jan 2012
Posts: 1
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
emgine overhaul

I have a 78 Bronco and want to Overhaul my tired 400m I would like to get it to 400hp i already have a edelbock 4bbl intake and carb what engine mods do i need to do. Can i keep stock heads just port and polish or do the need to go too. how much of a overbore do i need to go and can i keep my crank what type of cam etc etc etc

thanks

    Advertisement
Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
  #2 (permalink)  
Old 01-16-2012, 03:37 PM
techinspector1's Avatar
Senior Curmudgeon
 
Last wiki edit: DynoSim combinations Last photo:
Join Date: Oct 2005
Location: Hemet, California, USA
Age: 72
Posts: 12,572
Wiki Edits: 326

Thanks: 699
Thanked 881 Times in 749 Posts
Quote:
Originally Posted by Scott Dreveny
I have a 78 Bronco and want to Overhaul my tired 400m I would like to get it to 400hp i already have a edelbock 4bbl intake and carb what engine mods do i need to do. Can i keep stock heads just port and polish or do the need to go too. how much of a overbore do i need to go and can i keep my crank what type of cam etc etc etc thanks
http://www.hotrod.com/techarticles/e...d/viewall.html
Reply With Quote Quick reply to this message
  #3 (permalink)  
Old 01-16-2012, 06:39 PM
Registered User
 
Last photo:
Join Date: Apr 2007
Location: Seattle, Wa
Posts: 6,692
Wiki Edits: 0

Thanks: 3
Thanked 404 Times in 349 Posts
Quote:
Originally Posted by Scott Dreveny
I have a 78 Bronco and want to Overhaul my tired 400m I would like to get it to 400hp i already have a edelbock 4bbl intake and carb what engine mods do i need to do. Can i keep stock heads just port and polish or do the need to go too. how much of a overbore do i need to go and can i keep my crank what type of cam etc etc etc

thanks
We're getting snow up to our butts so I' can't get too deep into this. The 400M suffers mostly from all the things the SMOG engines of that era suffer from; not enough compression, not enough squish quench, and not enough cam timing and lift.

This has caused an otherwise very nice motor to be quite maligned over the years. However, you choose to fix those 3 issues will build you a 400 plus HP motor. Everything else is just prettying it up from porting, to headers, not that those things aren't needed, but if the first three don't get fixed the others will never be as effective as you'd wish for in terms of building power.

Bogie
Reply With Quote Quick reply to this message

Recent Hotrodding Basics 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:
If you do not want to register, fill this field only and the name will be used as user name for your post.
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
C6 questions before overhaul ekacpuc Transmission - Rearend 2 02-14-2011 09:28 PM
what is a good overhaul kit candy63impala Transmission - Rearend 3 01-27-2010 06:18 AM
10 bolt overhaul lluciano77 Transmission - Rearend 6 10-22-2005 04:24 PM
which is the best overhaul kit 403pontiac Transmission - Rearend 2 05-25-2005 07:50 AM
trying to avoid an overhaul CaptnSkull Engine 6 01-20-2003 05:05 AM


All times are GMT -6. The time now is 10:15 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.