Gears or OD for my sons car - 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 01-16-2007, 10:53 PM
Member
 
Last photo:
Join Date: Jan 2003
Location: Canada
Posts: 50
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
Gears or OD for my sons car

My 11 year old son bought a 71 Vauxhall Firenza and it is getting a 350 swapped in. The motor will be fairly mild and hopefully make around 350 at the flywheel. The car will weigh about 2700# with driver. The biggest tire we can stuff in the wells will be 25" tall. We are considering a 3.73 rear out of a 2 wd 92 S-10. I realize this isn't a real tough rear, but they are cheap and plentiful, and almost the perfect size for this car. With a TH350 he should be turning about 6000 rpm at the end of the quarter mile, but his fuel economy is going to suck for everday driving. A 700r4 will get the rpms way down for cruising, but would this 3.73 gear be optimal for 1/4 mile times with the 700 or should we go even lower?? How durable would a "stock" 700 be at this power level?? Should we use the th350 and run less gear?? Thanks

    Advertisement
Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
  #2 (permalink)  
Old 01-16-2007, 11:40 PM
Member
 
Join Date: Oct 2002
Location: The Lone Star State (Houston area)
Posts: 1,189
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
You might look at a 200-4R OD transmission rather than the much larger 700. I seem to remember that the Vauxhall is similar in size to an old Rambler American isn't it? You don't have much wheelbase to be using a 700 or you might end up with a 6inch driveshaft.
Reply With Quote Quick reply to this message
  #3 (permalink)  
Old 01-17-2007, 12:04 AM
Member
 
Last photo:
Join Date: Jan 2003
Location: Canada
Posts: 50
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
pasadenahotrod, Thanks I know the th350 will work fine, so a 700 can't be too much bigger, can it? Is a 700 any "porkier" around the bell?
Attached Thumbnails
Click image for larger version

Name:	jessescar.jpg
Views:	78
Size:	22.4 KB
ID:	17762  
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:
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
Classic car Ins companys tiresmoke55 Hotrodders' Lounge 14 03-20-2007 08:11 PM
Painting roof tips needed..... Bluepen Body - Exterior 7 09-10-2005 10:26 PM
Buyer Beware................... poncho62 Hotrodders' Lounge 10 05-19-2005 10:40 PM
Story time. Halloweenking Hotrodders' Lounge 17 05-19-2003 11:16 PM
How much Torque need to lift front end? unstable Engine 22 02-20-2003 10:54 AM


All times are GMT -6. The time now is 07:51 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.