m22 or th350 gears - 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 05-27-2003, 02:45 PM
New Member
 
Join Date: Dec 2002
Location: Oakland Ca
Posts: 26
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
Post m22 or th350 gears

The problem is i want to go faster on the freeway and have the most gas mileage out of my car. I have a 72 chevelle with a hot little 350. I have a chance on getting a M-22 rock crusher and would like to know if this tranny would allow for better gas mileage and better freeway crusing RPMs on the freeway opposed to my th350. I have no idea what my rear gears are, but going 65mph on the freeway with the th350 tachs 3,000rpm.

thanks

    Advertisement
Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
  #2 (permalink)  
Old 05-27-2003, 04:40 PM
Member
 
Join Date: Jan 2003
Location: NH
Posts: 32
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
Post

Both trans have a final drive ratio of 1:1. so gear ratios will not help you. I have alway been told that a manual trans requires less power to do the task at hand because its "direct" drive where as the automatic has to drive a pump and so on
Reply With Quote Quick reply to this message
  #3 (permalink)  
Old 05-27-2003, 05:20 PM
BOBCRMAN@aol.com's Avatar
Member
 
Last photo:
Join Date: May 2002
Location: Holly, michigan
Posts: 8,085
Wiki Edits: 0

Thanks: 23
Thanked 257 Times in 241 Posts
Post

plus the 350 turbo has a small percentage of slip so its not 100 percent locked up (unless you have lock up convertor)
Reply With Quote Quick reply to this message
  #4 (permalink)  
Old 05-27-2003, 07:59 PM
New Member
 
Join Date: Dec 2002
Location: Oakland Ca
Posts: 26
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
Post

how about gas mileage and highway? is there going to be any difference?
Reply With Quote Quick reply to this message
  #5 (permalink)  
Old 05-28-2003, 01:09 AM
Member
 
Last photo:
Join Date: May 2003
Location: Shreveport LA
Age: 64
Posts: 5,103
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
Post

Your cruising rpm would be marginally lower with the Muncie, but not much. Your biggest headache would be your final drive ratio in first gear. Assuming you have a 26" tire, your rear gear is around 3.36 or so. Multiply that by Muncie M-22 1st gear of 2.20, and you get 7.39:1. You will probably not like this, because you will have to slip the clutch big time just to get the car moving. I had a 350 Nova with 3.08 rear & 2.54 first gear, giving me 7.82:1, and it was a pain in the butt to drive, plus wore the clutch out every 25,000miles. This was with a LARGE flywheel, stock camshaft, and a few hundred pounds less weight than you have. For Muncie (and other) gear ratios & identification info, go to <a href="http://www.dandltransmission.com" target="_blank">www.dandltransmission.com</a> If that trans turns out to be a wide ratio (M-20), you would have 8.47 final ratio, which would be much better. I have seen several "Rock Crushers" for sale that turned out not to be when properly ID'd.
Reply With Quote Quick reply to this message
  #6 (permalink)  
Old 05-28-2003, 12:26 PM
New Member
 
Join Date: Dec 2002
Location: Oakland Ca
Posts: 26
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
Post

ok, thanks for that part...now, how would i find my rear gear ratio? what do i multiply the 1st gear ratio by?..and is the higher final drive ratio better because its move the car easier? and how would i measure my tires? i have 15 inch wheels with 225/60 tires.

[ May 28, 2003: Message edited by: 72HeavyChevy ]</p>
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 10:33 PM.


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.