Slapper bar settings - 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> Suspension - Brakes - Steering
User Name
lost password?   |   register now

LinkBack Thread Tools
  #1 (permalink)  
Old 02-20-2006, 12:44 PM
Last photo:
Join Date: Dec 2004
Location: Issaquah, WA
Posts: 288
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
Slapper bar settings

I have a 1st gen S-10 with the Lakewood universal slapper bars on my leaf springs. I'm having a hard time getting my rear suspension to work with me at the track. Originally what I had done was I adjusted the traction bars with shims so that they were pre-loaded and already up against the leaf spring when the truck was on the ground. To me this seemed like the best way to keep wheel hop under control and from happening. And that seemed to be fine but now that I'm trying to hook and get weight transfer and suspension geometry to work with me I think it's causing problems. It makes the rear suspension REALLY stiff and I think it's causing it to actually hurt traction because of it. I see that a lot of other guys with leaf spring setups on cars (old camaros, etc) don't have their slapper bars pre-loaded at all and infact have a good inch or more between the rubber snubber and the spring.

So my question is, where should I set my trac bars? Should they have a lot of space between the snubber and the spring or should they be close or on it? Will one way or the other cause more wheel hop?

Reply With Quote Quick reply to this message
Sponsored Links
  #2 (permalink)  
Old 02-20-2006, 01:00 PM
Last photo:
Join Date: Feb 2005
Location: West Michigan
Posts: 307
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
It sounds like everything is bound up. You should have some gap. Every car is different. You can gain a lot of traction by playing around with the front suspension. 90-10 shocks, remove sway bar, taller weeker springs.
Reply With Quote Quick reply to this message
  #3 (permalink)  
Old 02-20-2006, 01:16 PM
xntrik's Avatar
Save a horse, Ride a Cowboy.
Last photo:
Join Date: Jul 2005
Location: Arkansas
Posts: 5,131
Wiki Edits: 0

Thanks: 0
Thanked 3 Times in 3 Posts
First you should have the type of slapper bar that replaces the spring pad. Those that just clamp on the spring in front of and behind the axle are limited in value.

1) The bumper MUST hit directly under the spring eye bolt. Most every Camaro, Nova, etc. that you see, the bumper hits back 6 inches under the spring which defeats some of the usefulness of the bar, and permanently bends the spring. Consider lengthening your square bar.

2) I recommend urethane bumpers and urethane leaf spring eye bushings. Half of the tire shake comes from the rubber eye bushing. Rubber is too flexible under hard launches.

3) generally 1/2 to 1 inch is correct except for fine tuning. Bumpers can be hacksawed off to adjust clearance. You might end up with 1 inch on the drivers side and 1/2 on the passenger side (or more) to get a level launch.

4) You might discover that your truck will run quicker with 100 pounds of ballast at the tailgate. It is a toss up of accelerating the additional weight or spinning the tires. (I know a big block ElCamino with 200 pounds of concrete inside the tailgate)

5) If your rear end sits high, consider making the truck sit level by lowering the rear by dropped shackles or removing a leaf.

6) You might have to use different rear shocks and work on your front suspension for launch tuning when/if you finally get it to hook.
Reply With Quote Quick reply to this message

Recent Suspension - Brakes - Steering 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
Sway Bar Bushings - Distorted? 66GMC Suspension - Brakes - Steering 4 01-30-2006 08:07 AM
65 Belair Sway bar question sabino56 Suspension - Brakes - Steering 11 12-26-2005 08:22 PM
4 Bar que. 39chevy General Rodding Tech 3 10-18-2004 05:21 PM
front sway bar mount location fire power Suspension - Brakes - Steering 2 05-17-2003 07:10 AM
Slapper Bar Question bluesman123 Suspension - Brakes - Steering 9 05-15-2003 04:27 PM

All times are GMT -6. The time now is 03:50 PM.

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 1999 - 2012. All Rights Reserved.