GM 2:27 Ring and Pinion off a early 70s Tornado - 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 03-16-2011, 11:45 PM
Registered User
 
Join Date: Mar 2011
Location: Arizona
Posts: 2
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
GM 2:27 Ring and Pinion off a early 70s Tornado

I got this ring and pinion off Ebay a few years ago in hopes of swaping out my torque tube setup on a '53 Chevy Truck. The numbers stamped on it come out to a 2:27 ratio.

I wanted to stay with the inline6 it has off a '72 truck w/modified head. Since it isn't OEM I put a 268H Compcam in it. Now i what to increase the MPG to ride it around.

My question is: What rearend, carrier series or dropout do i need to use that ring and pinion?

I plan on mating everything up with a th2004r.

Thanks for any thoughts on what to do.

I also ************************************

    Advertisement

Last edited by Crosley; 03-17-2011 at 06:14 AM. Reason: Classified ad. Please use the Hotrodders Classifieds for classified ads.
Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
  #2 (permalink)  
Old 03-17-2011, 12:24 AM
American Muscle's Avatar
305 Turbo-Fire 240hp
 
Last photo:
Join Date: Dec 2008
Location: under the hood
Age: 31
Posts: 625
Wiki Edits: 0

Thanks: 0
Thanked 1 Time in 1 Post
I think you definitly want more gear for that inline 6. Most 6 cylinders had low gears to help compensate for the low hp/tq motor. Whts in there now?
Reply With Quote Quick reply to this message
  #3 (permalink)  
Old 03-17-2011, 02:03 AM
SSedan64's Avatar
Registered User
 
Last photo:
Join Date: Dec 2007
Location: Macon, GA.
Age: 50
Posts: 6,016
Wiki Edits: 0

Thanks: 0
Thanked 46 Times in 46 Posts
I agree, that's not nearly enough Gear for a 6cyl. with the TH2004R's .67/4th gear. Need more like a 3.73 & up.
2.27 X .67 = 1.52
3.73 X .67 = 2.49
4.11 X .67 = 2.75
Reply With Quote Quick reply to this message
  #4 (permalink)  
Old 03-17-2011, 06:15 AM
Crosley's Avatar
Hotrodders.com Moderator
 
Last wiki edit: T-350 rebuild tech
Last journal entry: Bar under the dash
Last photo:
Join Date: Nov 2002
Location: ... USA
Posts: 8,102
Wiki Edits: 1659

Thanks: 340
Thanked 102 Times in 98 Posts
Avalles;

welcome to Hotrodders.com

If you wish to offer parts for sale , do that in the classified section. No ads allowed on the main forums

__________________
Some people are like Slinkies... Not really good for anything, but they still bring a smile to your face when you push them down a flight of stairs.
Reply With Quote Quick reply to this message
  #5 (permalink)  
Old 03-17-2011, 09:48 AM
S10xGN's Avatar
Gotta love a turbo!
 

Last journal entry: Body on Frame today.
Last photo:
Join Date: Aug 2004
Location: Port Neches, TX
Age: 61
Posts: 1,665
Wiki Edits: 0

Thanks: 0
Thanked 62 Times in 58 Posts
You do know that Toronados were front wheel drives, right? Even though these transaxles had a "differential", I wouldn't think the gear sets would interchange with anything else...

Russ
Reply With Quote Quick reply to this message
  #6 (permalink)  
Old 03-17-2011, 01:32 PM
Registered User
 
Join Date: Mar 2011
Location: Arizona
Posts: 2
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
Ooops

I guess i goofed. The guy said it was off the same model used as a police cars back then, its not a olds tornado?

I know the cadilac toranado had that trans axle.

Anyway the driveline is all original still, compound 4 spd and 4:11 rearend (torquetube). I don't expect to race it. Almost everything these days is running a 3.0 to a 3.9 and getting 30 mpg.

its gotta be the gears and a low stall.

thanks for the comments!
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


Similar Threads
Thread Thread Starter Forum Replies Last Post
Are my ring and pinion still ok? zildjian4life218 Transmission - Rearend 41 09-22-2010 11:25 AM
8.5 ring and pinion oldsmo Transmission - Rearend 1 04-19-2006 09:32 AM
a lining the ring and pinion rudeboi Introduce Yourself 2 02-26-2006 11:21 AM
Ring and Pinion fred56 Transmission - Rearend 1 01-17-2005 04:45 PM
ring and pinion help Pontiacman Transmission - Rearend 0 11-13-2003 05:09 PM


All times are GMT -6. The time now is 03:16 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.