GM engine and transmission info(the best i've seen) - Page 2 - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat

General GM Chat When starting new posts, please specify YEAR, MAKE, MODEL, ENGINE type, and whatever modifications you have made. Chat about all things GM (and related cars). Off-topic stuff should be in the Lounge, and all Model specific mechanical problems should be posted in the proper forum.

Thread Tools Search this Thread
Old 04-04-2004, 06:46 AM   #11
Senior Member
Certified GM nut
Join Date: Feb 2004
Posts: 1,631
Thanks: 0
Thanked 0 Times in 0 Posts
94 SSE with Sizzle is on a distinguished road

Great info!
94 SSE with Sizzle is offline   Reply With Quote
Old 04-05-2004, 12:18 AM   #12
Senior Member
Posts like a Turbo
Join Date: Feb 2003
Location: Riegelwood, NC
Posts: 400
Thanks: 0
Thanked 0 Times in 0 Posts
BadTA00 is on a distinguished road

Originally Posted by Rosco the Iroc
Originally Posted by SSsuperchargedEi
1989 3.8L SFI Intercooled Turbo vin 7 (Turbo Trans Am)

245hp @ 4400 rpm
340tq @ 2800 rpm
8.0:1 Compression
RWD configuration
that motor oWnz all!!!!!
It was straight out of the Buick Grand Nat. It was also the Indy Pace car that year.

Officially rated at a very conservative 250-bhp to keep the Corvette (255 horse) from having its feelings hurt, the Turbo T/A actually pulled 301-bhp on GM'* very own dyno and grunted out 340 lb-ft of torque to boot. Backed by a BOP 2004R automatic tranny, with a 3:27 limited slip rear, the hyperactive F-body ran a 13.5 quarter, hit sixty in the low-fives, and topped out at 150-mph.

What makes the 20th Anniversary Turbo TA so special is that it is a complete mechanical package, and not just some tape stripes. Starting with the engine, Pontiac borrowed Buick'* 3.8 liter (231cid) V6 turbo powerplant from the fabled 1986-87 Grand National. Some difference exist between the TTA motor and the GN version. Different heads were necessary in order to squeeze the motor between the strut towers. These heads, adapted from the transverse FWD version of the 3.8 liter motor, have the added benefit of improved exhaust flow and combustion chamber design. Subsequently, different pistons were required in order to maintain combustion chamber volume. Other changes to the TTA motor are a cross-drilled crank, larger 12 fin/inch GNX-style intercooler in place of the GN'* 10 fin/inch design, specially-designed stainless-steel headers, higher-pressure Bosch 237 fuel pressure regulator, and a recalibrated engine control module.

The Turbo TA came with the rare 1LE racing brake package, which upgrades the front discs to 12 inch police rotors, Corvette twin piston aluminum calipers and semi-metallic pads. These brakes are virtually fade proof, and were installed to legalize the 1LE package for Firehawk endurance racing. The rear discs were also increased to 12 inches in 1989 and use Corvette single piston calipers. All of the brakes on the car are of a quick change design, and pads can actually be changed in 30 seconds.

The only mid-year change made to the Turbo TA during the entire production run was a redesigned turbo inlet tube. The redesigned plastic tube was more durable, and had a clamping rib on either end to keep the hoses attached more securely. Other production changes in 1989 affected the Turbo TA and F-bodies in general. As an example, in March 1989 GM switched from glass to Lexan T-tops in order to save weight. However, the Lexan tops had severe problems with scratching and cracking, and GM had to replace most of them under warranty. During the 1990 production run GM switched back to glass T-tops after having so many problems with the Lexan ones.
BadTA00 is offline   Reply With Quote

Related Topics
Thread Thread Starter Forum Replies Last Post
one of the best animated vids i have seen ReallyAGXP Lounge 2 03-21-2007 10:26 PM
Best and safest way to wash engine/engine compartment? BoneZ Detailing & Appearance 17 01-07-2007 04:08 PM
The Best House Prank I ever Seen LakevilleSSEi Lounge 4 05-15-2006 01:15 PM
Best paintjob SSEi I've seen in a long time, besides black ssesc93 General GM Chat 15 01-30-2005 12:18 PM
info on driver info center and compass wiring bonnieboy23 General GM Chat 3 02-28-2003 02:08 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 09:57 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 and affiliated sites.