GM gear ratios and how they work?? - 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> Transmission - Rearend
User Name
Password
lost password?   |   register now

Reply
 
LinkBack Thread Tools
  #1 (permalink)  
Old 05-26-2005, 08:32 PM
scheetz93's Avatar
Member
 
Last photo:
Join Date: Apr 2004
Location: enumclaw, washington
Posts: 97
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
GM gear ratios and how they work??

the gearing allway screws with my head, correct me if i am worng

4.10s are more for towing.. lower top speed but will get the tire spinning off the line and would get up to speed fairly fast

then as you go to lower gears 3.73 ect... i would get a higher speed but it may take me a little more time to get there

is this right?

I have a 88 chevy c1500 the tire size is 275/60/17 how can i find out what gears it may have?

what is a good gear ratio for street/strip?

thanks
Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
  #2 (permalink)  
Old 05-26-2005, 08:43 PM
killerformula's Avatar
Hotrodders.com Moderator
 
Last wiki edit: Carburetor
Last journal entry: Clean up
Last photo:
Join Date: Oct 2003
Location: Northeast
Age: 33
Posts: 3,485
Wiki Edits: 3

Thanks: 13
Thanked 27 Times in 18 Posts
for purposes of argument, we'll assume you're in 3rd gear with a 1:1 ratio in the transmission.

The number represents the number of times your engine has to turn over to turn the wheels one time. A 2.52 gear the engine is creeping along because it only has to spin 2.52 times to get the wheel to turn over once. A 4.10 gear the engine has to spin almost twice as much, so its working faster all the time, although there is less total stress on the engine crank with a steeper gear. IF the engine gets to spin more times for each tire revolution, it can apply power more quickly to the road. If it spins fewer times, it will apply less power over a given distance, but will be doing less work at a crusing speed, and give better gas mileage.

The gears in your transmission multiply the rear ratio, so with 3.73 gears and first gear in a TH350 trans (2.52 first gear) you're spinning something like 9 times per tire revolution, and 3.73 times in your final third gear (1:1).

K
Reply With Quote Quick reply to this message

Recent Transmission - Rearend 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



All times are GMT -6. The time now is 05:24 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.