5.0 Speed Density to 5.8 Mass Air Flow Conversion - 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
lost password?   |   register now

LinkBack Thread Tools
  #1 (permalink)  
Old 04-07-2013, 07:22 PM
Registered User
Last photo:
Join Date: Jan 2009
Location: Springfield, MO
Age: 32
Posts: 1,177
Wiki Edits: 0

Thanks: 11
Thanked 0 Times in 0 Posts
5.0 Speed Density to 5.8 Mass Air Flow Conversion

So I pulled the 5.0 from my truck (1987 F150 ECSB) a while back and was going to do some work on it, clean it up, and put it back in with a new cam, headers, maybe some GT40 heads, etc. Mild stuff. But i figured today, that if i am after more power, and planning on spending money anyways, why not just swap in a 351 and convert it to mass air at the same time? Shouldnt be too terribly hard I dont think.

The main thing right now is this. Will the 351 bolt in place of my 302? same motor mounts, same transmission, etc? What about the engine accessories? Will they transfer from the 302 to the 351?

And finally what about the engine harness. Can I get a harness from a 94-95 MAF truck... 5.0 or 5.8 and use it for the 5.8... or does it have to be 5.8 specific? I was thinking they were the same... probably need a harness from a 5 speed truck since my truck has an AOD and the 94-94s would be AODE or something else. What do you all think?

Reply With Quote Quick reply to this message
Sponsored Links
  #2 (permalink)  
Old 04-07-2013, 08:22 PM
LATECH's Avatar
Hotrodders.com Moderator

Last journal entry: GTO Reproduction Hood
Last photo:
Join Date: Jul 2010
Location: Northeast Pennsylvania
Posts: 6,999
Wiki Edits: 0

Thanks: 437
Thanked 632 Times in 549 Posts
Get a donor vehicle with the engine.
The accesories brackets are all different . The 351 deck height is taller, spreading the heads farther apart hence the acc brackets wont fit by about 1/2 an inch.
Wiring harness will be different as will the PCM the MAF is also SFI on that ,not batch fire like standard 5.0
tons of work and parts.
IIRC the 351 is externally balanced and so the flex plate /flywheel will be different.
Fact is stranger than Fiction
Reply With Quote Quick reply to this message

Recent Hotrodding Basics 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
how to bypass a mass air flow and o2 sensor in a 96 chevy 80camaroguy Engine 3 09-12-2011 06:35 PM
87 Speed Density 5.0 Mustang packer fan Engine 1 01-07-2008 04:38 PM
mass air flow sencor/map sencor Lil Robert Engine 7 10-03-2005 07:11 AM
Mass Air Flow HerTA Electrical 3 05-23-2005 10:34 PM
convert from map sensor to mass air flow cgreene Engine 2 05-10-2003 07:29 PM

All times are GMT -6. The time now is 03:56 AM.

Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2017, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0 PL2
vBulletin Security provided by vBSecurity v2.2.2 (Pro) - vBulletin Mods & Addons Copyright © 2017 DragonByte Technologies Ltd.
Copyright Hotrodders.com 1999 - 2012. All Rights Reserved.