GM Motor Differences? - 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 09-16-2003, 02:59 PM
Jag Daddy's Avatar
British Style with USA Muscle
 
Last photo:
Join Date: Mar 2003
Location: Valencia, California
Age: 57
Posts: 1,078
Wiki Edits: 0

Thanks: 7
Thanked 0 Times in 0 Posts
Question GM Motor Differences?

Ok I have a question, GM makes a lot of products i.e. Chevy, GMC, Pontiac, Cadillac, Oldsmobile etc. Whats the difference between the power plants?

For instance do they use the same blocks? If not what's the difference?

Regards
Mark

    Advertisement
Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
  #2 (permalink)  
Old 09-16-2003, 06:49 PM
Member
 
Join Date: Aug 2003
Location: calgary canada
Posts: 727
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
Basically everything is different with the exception of chev and gmc. since the late 60's their motors have been shared. As for caddy's olds pontiac and buick their motors have little in common.One could talk all day about all the differences and they all have their own strength and weaknesses
Reply With Quote Quick reply to this message
  #3 (permalink)  
Old 09-16-2003, 07:05 PM
Vern Bradford's Avatar
Member
 
Last photo:
Join Date: Jun 2003
Location: Texas
Age: 61
Posts: 90
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
In the 60's and 70's the different divisions did have different motors. Chevy had their own 350, Pontiac and Olds had theirs. I think it was in the early 80's that they started sharing Power Plants. When one of the divisions develop an engine they have exclusive use of that Power Plant for either three or four years, I forget exactly how long. That is why it took Chevrolet so long to finally get a good V-6 for their Camaro. After the alloted time they were allowed to put the Buick 3.8 Liter engine in it. GM is strange.
Vern
Reply With Quote Quick reply to this message
  #4 (permalink)  
Old 09-16-2003, 08:15 PM
Member
 
Join Date: Aug 2003
Location: calgary canada
Posts: 727
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
To be completely accurate gms devisions started sharing engines in the late seventies. The buick 3.8 that you mention from the camaro has been around since the 60's and in fact the rights of it were sold to jeep for a while until they were bought back by gm in the late 70's.

Last edited by Robinson Robin; 09-16-2003 at 09:38 PM.
Reply With Quote Quick reply to this message
  #5 (permalink)  
Old 09-16-2003, 10:11 PM
BOBCRMAN@aol.com's Avatar
Member
 
Last photo:
Join Date: May 2002
Location: Holly, michigan
Posts: 8,244
Wiki Edits: 0

Thanks: 30
Thanked 298 Times in 278 Posts
When dealing with later model GM engines you have to divide the engines up in "familys" Mostly determined by what division produced or designed the particular piece. examples 2.0-2.2 OHV 4, 2.8-3.1-3.4 V-6, are designated as Chevy along with the 4.3 V-6 and the large and small block V-8's. 2.3-2.4 Quad 4 motors are Olds design, along with the Arrora V-8,. 2.5 Iron motors are of Pontiac design, 4.6 V-8 is Cadillac along with the 4.1-4.5 V-8's. 3.3-3.8-4.0 V-6 are Buick designations.Then you get into the half breeds,1.0 GEO (Suzuki), 2.0 Brazillian, and a host of other Toyota-GM-Isuzu and various Korean companies tha GM has partnered with.
Thats why when you need a part or engine, you have to have the Vin Code to get the correct parts. When you get into the GEO stuff you will find three different engines used in a model in the same year, all the same size but from a different manufacturer.
Reply With Quote Quick reply to this message
  #6 (permalink)  
Old 09-17-2003, 01:18 PM
Jag Daddy's Avatar
British Style with USA Muscle
 
Last photo:
Join Date: Mar 2003
Location: Valencia, California
Age: 57
Posts: 1,078
Wiki Edits: 0

Thanks: 7
Thanked 0 Times in 0 Posts
So if I were to try to use a Pontiac block would it match up to say a 700r4? What is a comparable engine to say a chevy 350?

Regards
Mark
Reply With Quote Quick reply to this message
  #7 (permalink)  
Old 09-17-2003, 01:45 PM
Sandflea427SS's Avatar
Anything with a throttle
 
Last photo:
Join Date: Apr 2003
Location: South Central Pa
Posts: 440
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
I think the 700 was mostly only Chevy....
The 200R4 was more common with the dual bolt pattern BOP and Chevy.

Don't know much about the BOP small blocks...
Chevy and 455 Olds are all I know...
Reply With Quote Quick reply to this message
  #8 (permalink)  
Old 09-17-2003, 05:05 PM
Member
 
Join Date: Aug 2003
Location: calgary canada
Posts: 727
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
200-r4 where available in either a strictly chev pattern or a dual bolt pattern. I was about to say that 700-r4's are strictly chev but I though I remember them being offered with the 350 olds diesel.
Reply With Quote Quick reply to this message
  #9 (permalink)  
Old 09-08-2004, 08:49 PM
M&M CUSTOM's Avatar
Hotrodders.com Moderator
 
Last wiki edit: Transmission identification
Last journal entry: 1988 Suburban, the project continues.
Last photo:
Join Date: Mar 2003
Location: Northwest Pennsylvania.
Age: 43
Posts: 2,231
Wiki Edits: 9

Thanks: 0
Thanked 1 Time in 1 Post
Olds Diesels had the 2004R behind them. I had two of them over the years. If it wasn't the 2004R it was the BOPC 400 from my experience.
They might have had the 350 tranny behind them, but I haven't seen that as of yet.

The 700 is a Chevy only bolt pattern, or 2.5/2.8/3.1/3.4/3800 Gen II bolt pattern.
Reply With Quote Quick reply to this message
  #10 (permalink)  
Old 09-09-2004, 06:25 AM
New Member
 
Join Date: Sep 2003
Posts: 27
Wiki Edits: 0

Thanks: 1
Thanked 0 Times in 0 Posts
While it's true the 700 won't bolt right up to a true Pontiac block there are adapters readily available:
http://store.summitracing.com/defaul...+trans+adapter
Just as an example.
But what do you mean by "comparable engine to say a chevy 350"?
Inch for cubic inch the Pontiac motors will create (typically) more torque than the chevy small block as they have a longer stroke which starts at 3.75" for the Poncho 350. The SBC will rev higher and create more HP, typically at lesser expense with after market parts.

Last edited by Claymore12; 09-09-2004 at 06:31 AM.
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:
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 05:16 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.