87 gn motor into a 86 cutlass - 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> Engine
User Name
Password
lost password?   |   register now

Reply
 
LinkBack Thread Tools
  #1 (permalink)  
Old 03-31-2011, 09:30 PM
Registered User
 
Join Date: Mar 2011
Location: san antonio
Posts: 9
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
87 gn motor into a 86 cutlass

can i put a 87 gn motor into a 86 cutlass if so what do i gotta change

    Advertisement
Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
  #2 (permalink)  
Old 04-01-2011, 08:15 AM
busted knuckles
 
Last photo:
Join Date: Mar 2011
Location: Whatcom County, WA
Posts: 39
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
??

87 gn? Exactly what kind of motor? And what did the cutlass have in it?
Reply With Quote Quick reply to this message
  #3 (permalink)  
Old 04-01-2011, 09:16 AM
Registered User
 
Last wiki edit: Wheelbase database Last photo:
Join Date: Jan 2007
Location: Virginia
Posts: 3,516
Wiki Edits: 1

Thanks: 6
Thanked 144 Times in 131 Posts
This has been done before. The GN and Cutlass use the same frame. You need to swap EVERYTHING from the donor car, including frame mounts, motor mounts, wiring, computer, fuel tank (with pump), and trans. Your stock trans will not survive the turbo motor.
Reply With Quote Quick reply to this message
  #4 (permalink)  
Old 04-01-2011, 09:18 AM
Registered User
 
Last photo:
Join Date: Nov 2010
Location: Roselle, Illinois
Posts: 184
Wiki Edits: 0

Thanks: 0
Thanked 1 Time in 1 Post
Ditto for the rear end. Find a GN rear end as well.
Reply With Quote Quick reply to this message
  #5 (permalink)  
Old 04-04-2011, 11:44 PM
Registered User
 
Join Date: Mar 2011
Location: san antonio
Posts: 9
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
thanks every one actually i found a 85 gn motor v6 turbo 3.8liter and my cutlass has a 307 5.0liter and im not sure if it has the 7.5 rear end r the 8.5 rear end n about how much yall think i will end up payin in parts n the labor n etc and could i use a 84 buick t-type regal fo parts if it has the turbo v6 in it..and if i buy the 85 gn motor wat should i check n etc...but thanks fo all the info need it
Reply With Quote Quick reply to this message
  #6 (permalink)  
Old 04-05-2011, 02:18 PM
Hippie's Avatar
Analog man in a digital world.
 

Last journal entry: HEI comparison.
Last photo:
Join Date: May 2003
Posts: 2,255
Wiki Edits: 0

Thanks: 3
Thanked 5 Times in 5 Posts
Only the GN's and 1 or 2 years of G-body 442's came with the 8.5" which makes them pricey if you find one and the seller has any clue what it is. I've seen people asking $1,000 for an empty housing with axles. Doesn't mean they got it but they knew it was rare. It would be as cheap to have a regular 8.5 housing cut down to fit and brackets added. I was going to have one cut to GN length for a leaf spring car and add aftermarket axles but I found a factory Dana 44 posi that was a bolt in. Of course by the time I was done refurbishing it and swapping gears I had just as much in it.

I don't think the T-Type Turbo Regals got the 8.5 but don't quote me on that, I don't know for sure. I looked at a Turbo T-Type a few years ago with thoughts of doing a "detuned" GN look alike project with one of the boys and it did not have the 8.5. None of the Turbo 3.8 Monte Carlos I have looked at had the 8.5 either.
Reply With Quote Quick reply to this message
  #7 (permalink)  
Old 04-05-2011, 02:22 PM
Registered User
 
Last wiki edit: Wheelbase database Last photo:
Join Date: Jan 2007
Location: Virginia
Posts: 3,516
Wiki Edits: 1

Thanks: 6
Thanked 144 Times in 131 Posts
The only G-body cars with 8.5" axles were the 1984 Hurst/Olds (3.73:1), 1985-87 442 (3.73:1), and the 1985-87 GN (3.42:1). All other 1978-88 A/G body cars got the 7.5 axle.
Reply With Quote Quick reply to this message
  #8 (permalink)  
Old 04-05-2011, 02:29 PM
Registered User
 
Last photo:
Join Date: Nov 2010
Location: Roselle, Illinois
Posts: 184
Wiki Edits: 0

Thanks: 0
Thanked 1 Time in 1 Post
Here's a link to one for sale on Chicago craigslist. Looks to be built. I've seen them for $800 on the low side and up to $2K. They are strong. My son has a 86 GN that runs low 12's stock 8.5 with no issues.

http://chicago.craigslist.org/nwc/pts/2296202614.html
Reply With Quote Quick reply to this message
  #9 (permalink)  
Old 04-06-2011, 10:42 PM
Registered User
 
Join Date: Mar 2011
Location: san antonio
Posts: 9
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
so would the gn rear end bolt rite up to my 86 4 door cutlass yall think
Reply With Quote Quick reply to this message
  #10 (permalink)  
Old 04-06-2011, 11:57 PM
ericnova72's Avatar
More for Less Racer
 
Join Date: Jan 2007
Location: S.W. Lower Michigan
Age: 47
Posts: 8,908
Wiki Edits: 0

Thanks: 19
Thanked 363 Times in 333 Posts
Quote:
Originally Posted by reggie24
so would the gn rear end bolt rite up to my 86 4 door cutlass yall think
Yes, it will bolt right into the chassis, but the driveshaft will have to be shortened a little bit, the 8.5" rear is a little longer out the front of the pinion nose.
Reply With Quote Quick reply to this message
  #11 (permalink)  
Old 04-07-2011, 11:36 PM
Registered User
 
Last photo:
Join Date: Nov 2010
Location: E. St. louis, IL/ St. Louis, Mo
Posts: 44
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
You can do ittttt!


Reply With Quote Quick reply to this message
  #12 (permalink)  
Old 04-14-2011, 01:52 PM
Registered User
 
Join Date: Mar 2011
Location: san antonio
Posts: 9
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
man dats nice rite there and sum one told me the gn motors r a pain in the u kno and sshould i go wit the gn motor r get a ls1 and call it a day so wat yall think i should doo
Reply With Quote Quick reply to this message

Recent Engine 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
Putting a Grand National Motor in a Cutlass ChrisMiddleron Engine 8 04-01-2011 08:54 PM
78 cutlass workman306 Introduce Yourself 2 11-27-2010 03:52 PM
Chevy motor mounts won't line up in my Cutlass labreejr Engine 10 11-23-2010 05:33 PM
A 500 BBC Motor in a Cutlass ChrisMiddleron Engine 4 03-14-2006 06:54 PM
1986 Cutlass Motor mount and vacuum line questions ChrisMiddleron Engine 8 05-19-2005 12:51 PM


All times are GMT -6. The time now is 03:31 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.