Help tuning my SBC - Hot Rod Forum : Hotrodders Bulletin Board -- 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
lost password?   |   register now

LinkBack Thread Tools
  #1 (permalink)  
Old 05-14-2007, 04:27 PM
ScottRods2945's Avatar
Registered User
Last photo:
Join Date: Apr 2007
Location: indiana
Age: 29
Posts: 19
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
Help tuning my SBC

I got my truck running a while back and found that I had to change my stahl converter so I did now I have it running and everything but it still seems to need a little tuning. It idles well, after it gets warmed up of course, but when I rev it up it wants to stay reved, for example, i barely touch the pedal and it revs high and stays reved for a little longer than it should. Instead of going up and coming right back down the RPMs go up and slowly come down. Another thing is that when I shut off the engine it didn't die immediatly it turned a time or two then spit up through the carb and smoked out of the carb. I have checked for vacuum leaks over and over and haven't found or heard any and I tried a fuel regulator and it didn't run any better. the carb on it is a carter afb comp series.


Last edited by ScottRods2945; 05-14-2007 at 04:32 PM.
Reply With Quote Quick reply to this message
Sponsored Links
  #2 (permalink)  
Old 05-14-2007, 08:32 PM
Registered User
Join Date: Feb 2006
Location: Carmel, Ca
Age: 62
Posts: 8
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
High idle

Had the same problem on a 290 HP 350. The intake manifold was warped creating a vacumn leak in the valley, changed out the intake and problem was cured. I would check everything else before I tackled the intake.
Reply With Quote Quick reply to this message
  #3 (permalink)  
Old 05-14-2007, 09:26 PM
Registered User
Join Date: Mar 2007
Location: wisconsin
Age: 42
Posts: 45
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
if there is nothing binding at the accelerator pedal, cable, or linkage
slow engine deceleration is usually a lean condition
play with your timming with the dieseling problem
Reply With Quote Quick reply to this message

Recent Engine 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
Help tuning my SBC ScottRods2945 Engine 3 04-19-2007 01:02 PM
Tuning SBC? SuperSport Hotrodding Basics 3 11-26-2006 10:29 AM
tuning 327 SBC 1 Day Engine 5 09-23-2006 01:23 PM
SBC Tuning Help... dastone Engine 14 08-22-2006 05:12 PM
Dual Quads on SBC - Tuning? SirSpeedy Engine 1 04-13-2006 10:14 PM

All times are GMT -6. The time now is 12:31 PM.

Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2015, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0 PL2
Copyright 1999 - 2012. All Rights Reserved.