![]() |
|||||||||||||||
![]() |
|||||||||||||||
![]() |
|||||||||||||||
In 1989, Porsche ups the ante again, this time delivering a 'serious sporting machine for the solvent'. The GT is a special version featuring a revised 5.0 liter 330HP V8, sport suspension and all new seven-spoke Club Sport rims (note 1), the rears the widest yet from Porsche measuring 16 x 9" wide. As such, the GT comes only with a manual trans. Visually imperceptible but an improvement functionally, the shiftrod is shortened 1" from the manual S4. Driver and passenger-side airbags introduced and Porsche becomes the first to make them standard across the model line. New low-pressure tire warning system is standard. From 959 technology, the 928 GT is fitted with an electronically controlled liminted slip differential. The LSD has a progressively lockable multiplate clutch installed with the rear differential (note 2). A computer monitors wheelspin and clutches the affected wheel. Also new is a tire pressure warning system utilizing a pair of sensors integrated into each wheel. The wheels themselves made a change from the original Club Sport wheel in model year 1989 to the forged Design 90 style beginning in 1990. Price: $76,500 (note 3) Exact 928 GT production figures are unknown to the author but have been guesstimated as follows: (In response to market, Porsche introduces the hotter engined GT mid model year in 1989. Thus there are both manual and automatic 1989 928 S4's. For model years 1990-1991, the 928 S4 continues on as before but comes only with 316hp and the 4-speed automatic) (note 1.) Club Sport see 928 S4 info (note 2.) Motor, August 1988 (note 3.) Car and Driver, July 1990
* the engine s/n from the PCA tables have been omitted so that we may verify them with Porsche. If your need is immediate please purchase the tech spec booklet. other note: peak hp has been recorded at slightly higher rpm value of 6200 rpm. This page will be corrected...note: chassis numbers given above shared with 928 S4 cars note: 928 GTs were available beginning with model year 1989. (Updated numbers will be posted) To: 928 porschefans <928@porschefans.com>
PMJI: Barring any original car documentation which denotes serial numbers,
the
Code 639 or 637, denoting GT, may not always appear on the build sticker
in the trunk for
So, what the cardex will tell you (from my experience with the 1990
This same anomaly may apply to Club Sport / SE editions as well. If anyone has info on shortcuts to getting the cardex info please let
us
For those in the field shopping right now, verifying engine code M28.47
Phil Tong
contd. Phil and Paul, Phil, I know you prompted me for a response on this topic earlier in
the month
I have attached a scan of an 89 GT that I recently considered trading
my S4
Regards, Chuck Zachman
![]() |