454 problems - 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 05-02-2013, 07:06 PM
Chev85's Avatar
Registered User
 
Join Date: Apr 2013
Posts: 13
Wiki Edits: 0

Thanks: 5
Thanked 0 Times in 0 Posts
454 problems

Few questions to all of you smart chevy people. My 454 that I recently put in my k10 with a fresh rebuild it having some problems. The 600 cfm carburator works fine (I think) although uphill it maxes out at around 30mph. and when the truck sits at a angle it has a distinct miss to it and almost dies withought giving it gas. Last thing is when going uphill for about half a mile i get to the top and it stalls out. I throw it in neutral and put the pedal down. Temp and oil pressure was fine just decided it was done.. right then.
Any help would be great!

    Advertisement
Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
  #2 (permalink)  
Old 05-02-2013, 07:16 PM
techinspector1's Avatar
Senior Curmudgeon
 
Last wiki edit: DynoSim combinations Last photo:
Join Date: Oct 2005
Location: Hemet, California, USA
Age: 72
Posts: 12,946
Wiki Edits: 326

Thanks: 760
Thanked 1,013 Times in 849 Posts
Float is set too high and fuel pressure may be excessive. Those carbs will only tolerate about 5 psi at the inlet before the pressure unloads the needle and seat and the pump begins to blow raw fuel into the intake manifold.

Tee off at the carb inlet and run a small copper line back to the firewall, then up past the hood lip and out to the grillework in front of the windshield. Temporarily mount, with duct tape and tie wraps, a 0-15 psi, mechanical, liquid-filled fuel pressure gauge on the grillework in front of the windshield so that you can monitor the pressure as you drive. Fuel pressure regulators will work ok on an electric fuel pump, but don't work so well on a standard cam-driven mechanical pump. If you have excessive pressure and are using a mechanical pump, the fix is to replace the pump with a plain, simple Carter pump for your OEM application. Google for 5 psi fuel pump.
Reply With Quote Quick reply to this message
The Following User Says Thank You to techinspector1 For This Useful Post:
Chev85 (05-02-2013)
  #3 (permalink)  
Old 05-02-2013, 07:17 PM
vinniekq2's Avatar
Registered User
 
Join Date: Jun 2012
Location: BC,Canada
Age: 56
Posts: 8,063
Wiki Edits: 0

Thanks: 322
Thanked 783 Times in 749 Posts
30 mph? the 454 should be sucking that carb right into the intake.
check your timing and fuel flow,
Reply With Quote Quick reply to this message
The Following User Says Thank You to vinniekq2 For This Useful Post:
Chev85 (05-02-2013)

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:
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
454 Carb problems Bellarat Engine 4 12-22-2011 12:19 PM
454 problems truckboy61 Engine 6 09-06-2009 05:29 PM
454 problems lowdually Engine 4 05-26-2009 05:21 AM
454 problems Gecko Engine 2 01-29-2005 08:00 PM
454 into Caprice: what problems? Jim C. Engine 3 05-01-2002 09:20 PM


All times are GMT -6. The time now is 10:28 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.