Go Back   Ford Truck Enthusiasts Forums > Regional Chapters > Mid-West Region > Michigan Chapter
Sign in using an external account
Register Forgot Password?


Michigan Chapter Join Chapter, Leader: just another truck

Welcome to Ford-Trucks Forums!
Welcome to Ford-Trucks.com.

You are currently viewing our forums as a guest, which gives you limited access to view most discussions and access our other features. By joining our community you will have access to post topics, communicate privately with other members (PM), respond to polls, upload content and access many other special features. Registration is fast, simple and absolutely free so please, join the Ford-Trucks Forums community today!





 
Reply
 
 
 
 
LinkBack Thread Tools Search this Thread
  #1  
Old 03-30-2005, 12:11 PM
kij2004 kij2004 is offline
Freshman User
 
Join Date: Aug 2004
Location: Michigan
Posts: 38
kij2004 is starting off with a positive reputation.
What Lift?

I have a lift size question. I have an 88 F150 that I will be puting 33's and a 3" body lift on in the next couple of weeks. Down the road a little I would like to add a suspension lift and 35's. I know the lift law in Michigan is 24" to the frame and 26" to the bumper. What is the highest lift that I can put on it to keep it as close to legal as possible just in case it is ever checked? I know that the body lift will only affect the bumper height but I am working on a custom one that will fill the gap and keep it low. I would like to go with the 6" lift just because.

Also if anyone has any idea of the best gearing to run in that truck. Currently I am running a stock 3:08 with 31's and it is a slight dog on take off. I know that it will only get worse with the bigger tires. It has a 5-speed 300 6 that gets awfull mileage and I know that will get worse too. But hey if I wanted milage I would buy a yugo. Speaking of which I was passed on take off by one the other day . HELP!

Frank
Reply With Quote
  #2  
Old 03-30-2005, 04:22 PM
Crash687's Avatar
Crash687 Crash687 is offline
Posting Guru
 
Join Date: Mar 2004
Location: MI
Posts: 1,321
Crash687 is gaining momentum as a positive member of FTE.
here some useful you can use to answer that.
Click the image to open in full size.
Below are some of the mathematical formulas used to answer commonly asked questions concerning fitments of light truck tires.

"How much extra ground clearance under the axles will be provided?" or "How much will it raise the vehicle's center of gravity?"

(New Tire Diameter-Original Tire Diameter) / 2 = Approx. change in ground clearance and center of gravity

Example:
(32.5" - 27") / 2 = 2.75" change (increase) in ground clearance and center of gravity

"How will it affect the acceleration performance of the truck?"

The answer is that it has the same affect as changing the axle ratio of the truck.

(Original Tire Diameter / New Tire Diameter) X Original Axle Ratio = Effective Axle Ratio

Example:
(27" / 32.5") X 3.50 Original Axle Ratio = 2.91 Effective Axle Ratio

"How will it affect the performance of the truck on the highway?"

(Original Tire Diameter / New Tire Diameter) X RPM@MPH = New RPM @ actual MPH

This example is for 55 MPH

Example:
(27" / 32.5") x 2400 RPM = 1985 RPM @ 55 mph with new tires.

"How far off will the speedometer be?"

May be speeding ticket time!

(New Tire Diameter / Original Tire Diameter) X Indicated Speed = Actual Speed with new tires

Example:
(32.5" / 27") X 55MPH = 66.2 MPH Actual Speed with new tires

"What can I do to regain the performance?"

Change the differential gears if the truck is equipped with solid axles at a cost of about $400 - $500 per axle.

(New Tire Diameter / Original Tire Diameter) X Original Axle Ratio = Required Axle Ratio

Example:
(32.5" / 27") X 3.50 Original Axle Ratio = 4.20 Required Axle Ratio
__________________
FTE "the best, why mess with the rest?"
just so you know what time it is
Help cure Cancer
'05 F-350 PSD work truck
If electricity comes from electrons, does morality come from morons?
Reply With Quote
Old 03-30-2005, 04:22 PM
 
 
 
Reply

Go Back   Ford Truck Enthusiasts Forums > Regional Chapters > Mid-West Region > Michigan Chapter

Thread Tools Search this Thread
Search this Thread:

Advanced Search

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 On
Pingbacks are On
Refbacks are On

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Whats wrong with body lifts? 88f150kid 1987 - 1996 F150 & Larger F-Series Trucks 15 04-13-2013 05:05 PM
Body Lift vs. Suspension Lift a_user Offroad & 4x4 4 12-31-2006 06:25 PM
My first ever lift kit question JBronco 1978 - 1996 Big Bronco 4 04-04-2005 01:15 AM
is a body lift and a suspension lift good or bad iamaguy1357 Offroad & 4x4 45 08-09-2004 07:03 AM
which lift is better?? usmc_ford Offroad & 4x4 8 04-22-2003 04:55 AM



All times are GMT -5. The time now is 06:15 PM.


Powered by vBulletin® Version 3.8.7 AC1
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Advertising - Terms of Use - Privacy Statement - Jobs
This forum is owned and operated by Internet Brands, Inc., a Delaware corporation. It is not authorized or endorsed by the Ford Motor Company and is not affiliated with the Ford Motor Company or its related companies in any way. FordŽ is a registered trademark of the Ford Motor Company.

vbulletin Admin Backup