Retard question - who makes/designed the 3800? - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


Performance, Brainstorming & Tuning Talk about modifications, or anything else associated with performance enhancements. Have a new idea for performance/reliability? Post it here. No idea is stupid! (please use Detailing and Appearance for cosmetic ideas)

Reply
 
 
 
Thread Tools Search this Thread
Old 01-24-2003, 11:16 PM   #1
Senior Member
Posts like a Turbo
Thread Starter
 
Join Date: Dec 2002
Location: Upper Left Coast
Posts: 299
Thanks: 0
Thanked 0 Times in 0 Posts
BusMaster007 is on a distinguished road
Default Retard question - who makes/designed the 3800?

OK, so this is a retard question...

If my '92 GMC Jimmy with the Vortec V6 is a 262 cu.in. 3/4 Chev V8 --- what exactly is my '92 Pontiac Bonneville'* V6/231 cu.in./3800TPI made of, a Buick?

Be easy on me.
BusMaster007 is offline   Reply With Quote
Old 01-25-2003, 11:26 AM   #2
Senior Member
Posts like a Turbo
 
Join Date: Jul 2002
Location: Cheyenne WY
Posts: 328
Thanks: 0
Thanked 0 Times in 0 Posts
brminder is on a distinguished road
Default

It'* simply a corporate GM designed engine. The days of each GM division designing and building their own engines is long gone... 20 years gone or more. They all share the same engines, trannys, suspensions, electronics... makes no difference whether it'* Pontiac, Buick, Olds... the only reason for the seperate divisions now is marketing.
brminder is offline   Reply With Quote
Old 01-25-2003, 12:05 PM   #3
Senior Member
Posts like a Northstar
 
Join Date: Aug 2002
Location: Toledo, Ohio 2002 SSEi
Posts: 602
Thanks: 0
Thanked 0 Times in 0 Posts
Jstpsntym is on a distinguished road
Default

Its not so much that your 4.3L V6 is a 5.7L (350cid) with two cylinders chopped off. GM just uses the same bore/stroke between some of the V6'* and V8'*. This allows them to use some of the same internal parts between the engines and saves significantly on tooling costs.

The following text taken from http://www.gnttype.org/general/v6hist.html

Quote:
The venerable Buick 3.8 V6 has had a long and fairly illustrious career, powering many Buicks, and other GM vehicles over the past 30 years. The original design for the V6 started in the early 60s when Buick created a V6 based on the all aluminum 215 V8. The very first "Fireball" V6 displaced a whopping 198 cubic inches and shared tooling with the 215 aluminum V8 in 1962. In late 1963, the bore was increased to be the same as the 300 V8, which made displacement 225 cubic inches, where it stayed until 1967. Since the V6 had the same bore as the 1966 340 V8 it could be produced on the same assembly line. This made it cheap and easy to produce for the "compact" cars in GM'* car lines. The demand for the V6 was never very great and the design resulted in an uneven firing order that produced a rough idling engine, so the design was sold to Jeep in 1967.

In the 70s, with the advent of the gas crisis and the demand for a versatile, lightweight, and inexpensive engine, Buick bought the design back from Jeep in 1974. The little V6 was reworked so that it could be made on the same assembly line as the Buick 350, which entailed making the bore 3.800". Using this bore size, it could share pistons and other parts with the V6. This engine retained the original designs "odd-fire" design.

In 1977, Buick redesigned the firing order to make it a smoother running engine by revising the crank throws. This was a mid-year change, so some odd-fire and some even-fire V6s were made during 1977. The new even-fire engine still retained the same bore spacing as the odd-fire version, so the bores were no longer centered over the rods and the engine had to be under balanced and soft motor mounts were used. The balancing took care of the vertical component of the vibrations and the motor mounts took care of the horizontal component.

Several variations of the 231" V6 were made over the years, including the 3.0 liter in some of the early 80s front wheel drive cars, the 4.1 liter used in some of the larger rear wheel drive cars, and of course, the turbo 3.8 variations used in the various Sport Coupes, turbo Regals, some early '80-81 Monte Carlos, and some of the Riviera'*.
In a nutshell, yes, your motor is a Buick.

Jay
Jstpsntym is offline   Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
Mod the idiot-designed parking brake? SilverSleeper8704 Performance, Brainstorming & Tuning 11 11-11-2010 04:47 PM
Poorly designed Disney Kids Ride Doppleganger Lounge 2 11-23-2006 10:29 PM
i don't think this is what pontiac designed the T-Tops for sqela Your Other Rides: Pics & Videos 12 03-06-2006 10:17 PM
GM designed our fans to always be on? (Auto climate control) BillBoost37 Everything Electrical & Electronic 4 08-08-2005 10:22 AM
re-designed car on tha block....... mista_sse General GM Chat 11 04-03-2003 01:33 PM


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not 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 Off
Pingbacks are Off
Refbacks are Off



All times are GMT -4. The time now is 02:42 PM.


We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.