Reply
 
Thread Tools Search this Thread Display Modes
 
Old 05-07-2007, 03:16 PM   #1
Ensign
 
Join Date: Mar 2007
Location: Adelanto, CA
Posts: 8
Default 5.0L to 5.7L Issues

The service shop that is upgrading the engine from the 5.0 to the 5.7 appearantly has not done their homework when trying to tackle a task like this. They have stated that the new 5.7 is not recieving enough fuel, so they think that the fuel pump may need to be upgraded as well. However, when I look up fuel pumps for the 5.7 the description states that the same fuel pump works for the 5.0. Are there simple adjustments that need to me made to accomodate the 5.7 or do I really need to buy an upgraded fuel pump?

Has anyone upgraded from a 5.0 to a 5.7 and encountered similar issues?
__________________

__________________
HIGHDESERT2400SCR
George
2001 2400 SCR
HIGHDESERT2400SCR is offline   Reply With Quote
Old 05-07-2007, 03:40 PM   #2
Admiral

 
seapuppy's Avatar
 
Join Date: Nov 2005
Location: Everett Wa
Posts: 4,681
Default

I used to do alot of mods on sbc's and about the only thing that is different between a 5.0-5.7 is the bore/stroke/cam.....that's about it...everything else is the same...but...I have to ask.....are you using a carb'd or mpi unit....is the carb cluged off the old engine??...if so..the your under carbed and need to upgrade the carb....timing may be an issue also..if the advance isn't going all the way to 30 degs..then that will make it seem like it isn't getting enough fuel.....sitting in front of a laptop won't be an easy way to diagnose the problem....
if your fuel pump is a manual type...then it can only deliver about 18-20 psi to the carb...if it's mpi then you need substantially more fuel pressure....

hope this helps.... :shock:
__________________
Don't compare your life to others. You have no idea what their journey is all about.
------------------------
SSN683 Association member
Par Excellence
------------------------------
2008 Bayliner 340 - "Wild Whim"
--------------------------------------
I live in my own little world....but it's okay-they know me here!!!

Avid practitioner of the martial art: KLIK-PAO.
Tap-Rack-Bang

Anyone that sez "Size doesn't matter" has never owned a boat!
seapuppy is offline   Reply With Quote
Reply

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not 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 Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Need Drivers side windsheild? Overcamber Buy | Sell | Trade 1 09-19-2009 02:19 PM
3700 SY -- 120V Electrical system Big Daddy Maxum Owners General Discussions 3 07-17-2009 07:39 PM
Merc 6.2L Operating Temp Ticamo Maxum Owners General Discussions 2 08-26-2008 08:49 PM
boat cover cunuck Maxum Owners General Discussions 0 06-25-2008 09:40 PM

Powered by vBadvanced CMPS v3.2.3

All times are GMT. The time now is 09:57 PM.


Powered by vBulletin® Version 3.8.8 Beta 4
Copyright ©2000 - 2024, vBulletin Solutions, Inc.