What is a WS9 Formula conversion??
it was posted in other threads too, girl.

every pontiac fbody started off as a plain v6 'shell', they were either kept as a v6, or converted to a formula, TA or other model....
so if it was converted into a formula, it would have the ws9 rpo, and so on for the other models and their respective rpos
you may want to start a new thread cos no one is gonna look at this one , its to old, maybe in the racer's lounge it would get more views
The Best V8 Stories One Small Block at Time
The "WE4" was a code given to 1547 T-Types in 1987 only. Some say its coincidence that the GNX had a production number of 547 (1,000 more on the dot WE4s), some do not. As all T-Types, the WE4 was the exact same car as a Grand National without the appearance package = 2 tone seats, door panels, black carpet, chrome wheels and emblems. The WE4 was special not only because it was rare, but also because it came with lighter, aluminum drums and bumpers from the factory making it lighter than any Turbo Regal and therefore faster than GNs and T-Types. It also came with the "blackout package" which includes black headlight bezels, black grille, black bumpers and trim, all instead of chrome. This was available on other T-TYpes as well, with RPO code "w02." WE4s, however, ALL came with the w02 blackout package. And for those that were wondering, RPO code for Grand National is we2.
-Kevin
Regal guys would be best served asking/posting info about their Buicks in seperate thread........ maybe even on a seperate board? I seriously doubt many Buick folks will stumble across this thread. Nonetheless, welcome to LS1-dom, kTrainHurricane.

FWIW: WS9 is "Formula Conversion", which merely means it's a Firebird w/ a V8 drivetrain. ALL Formulas and T/As have WS9, and it has nothing to do w/ WS6 or 1LE.
Formulas will have W66 in addition to WS9.
T/As will have Y82 (coupe) or Y84 (vert) RPOs, in addition to WS9.
WS6 was an option on Formulas ('96-'00) and T/As ('96-'02).
From '96-'00, factory 1LEs required WS6, and were all Formula HTs.
As will all factory options, if the RPO code isn't on the build sheet, the car didn't come w/ it from the factory.
No Formula WS6 or 1LEs were built after 2000. SLP offered optional 1LE content on Firehawks in '01-'02, but these cars won't have a 1LE RPO code.
)In '96 & '97, you could order the T43 on a Firehawk Formula.
)In '96 & '97, you could order the T43 on a Firehawk Formula.
regarding the WS6 and that spoiler, thought T43 was a mandatory option on the T/A in 96 if ordered with the WS6? are you sure the 521 cars ordered with WS6 but not T43 weren't the Formula WS6's?
regarding the WS6 and that spoiler, thought T43 was a mandatory option on the T/A in 96 if ordered with the WS6? are you sure the 521 cars ordered with WS6 but not T43 weren't the Formula WS6's?
It may be possible that these few non-T43 WS6 T/As built were pilot cars / engineering mules / prototypes or very early production cars built before they made T43 and mandatory option on WS6 T/As.
A WS9 and Y82= Formula and Trans AM conversion
A WS9 and Y84=Formula and Trans AM conversion and it is a convertible
From above:
Formulas will have W66 in addition to WS9. Formulas will NOT have Y82 or Y84.
T/As will have Y82 (coupe) or Y84 (vert) RPOs, in addition to WS9.









