What is the actual Garrett turbo model used in our TGP's ? Thanks

A T-25. Not sure of the trims and such...but it is the same as the 1987 Sunbird 2.0 GT Turbo. 8)

From my Site

About the Gerrett T25 Turbo used on the 3.1L {V}
Garret T-25 turbo .62 A/R intake , .60 A/R exhaust w/ closed loop boost control and integrated wastegate.

From W-Body.com

Turbocharger

Garrett T-25, water cooled
Model #: TB2528
Part #: 465939-2
CHRA #: 431876-29
Wastegate: Vacuum, actuated by ECM-controlled solenoid
A/R Ratios: 0.68 Turbine; 0.80 Compressor

Thanks everyone...very much appreciated!

no, the Sunbird 2.0/Grand Am 2.0 had the T2 Turbo Chargers

Quote from: Prospeederno, the Sunbird 2.0/Grand Am 2.0 had the T2 Turbo Chargers

Ummmmmm sorry but I had a 1987 GT Sunbird that ran a T-25 from the factory! 84-85 on the 1.8L is the only years a T2 came on a Sunbird or Grand Am. Even then the thing was so frikkin small and the motor was such a dog they knew it was a mistake! Another issue was the T2 on those cars were not water-cooled and they had many service returns on them before the warranties ran out!

Make        Model                  Year Engine         Turbo      Turbo Model  Part Num  
PONTIAC  Firebird/Trans-Am   89  3.8L  GAR  TB0348  466748-4X
PONTIAC  80-81  4.9L  GAR  TB0305  465518-2X
PONTIAC  McLaren / Grand Prix    89-90  3.1L  GAR  TB2528  465939-2X
PONTIAC  Grand Am   88.5  2.0L  GAR  TB2521  465365-1X
PONTIAC     88  2.0L  GAR  TB2506  466876-1X
PONTIAC     87  2.0L  GAR  TB2506  466876-1X
PONTIAC  Sunbird   89-90  2.0L  GAR  TB2522  465749-1X
PONTIAC     88.5  2.0L  GAR  TB2521  465365-1X
PONTIAC     88  2.0L  GAR  TB2506  466876-1X
PONTIAC     87  2.0L  GAR  TB2506  466876-1X
PONTIAC  Sunbird Watercooled Upgrade   84-85  1.8L  GAR  TB0239  465853-1X
PONTIAC     84-85  1.8L  GAR  TB0206  466204-1X  
PONTIAC  2000 Watercooled Upgrade   84-85  1.8L  GAR  TB0239  465853-1X
PONTIAC     84-85  1.8L  GAR  TB0206  466204-1X  
PONTIAC  Firebird / Trans-Am   89  3.8L  GAR  TB0348  466748-4X
PONTIAC     80-81  4.9L  GAR  TB0305  465518-2X
PONTIAC  Grand Am / McClaren /   89  2.0L  GAR  TB2522  465749-1X
PONTIAC     88.5  2.0L  GAR  TB2521  465365-1X
PONTIAC     88  2.0L  GAR  TB2506  466876-1X
PONTIAC     87  2.0L  GAR  TB2506  466876-1X
PONTIAC  Sunbird   89-90  2.0L  GAR  TB2522  465749-1X
PONTIAC     88.5  2.0L  GAR  TB2521  465365-1X
PONTIAC     88  2.0L  GAR  TB2506  466876-1X
PONTIAC     87  2.0L  GAR  TB2506  466876-1X
PONTIAC  Sunbird Watercooled Upgrade   84-85  1.8L  GAR  TB0239  465853-1X
PONTIAC     84-85  1.8L  GAR  TB0206  466204-1X
PONTIAC  2000 Watercooled Upgrade   84-85  1.8L  GAR  TB0239  465853-1X

And before you say, "see there is a watercooled upgrade that is a T02". Realize that is an upgrade you can purchase from Garrett...the T02 never came on the 2.0 Sunbird/Grand Am or Pontiac 2000. Pontiac was in love with the T-25 for whatever reason...obviously big enough for the 2.0L, but not enough for the 3.1L  8)

*edit* I do take back that the Sunbird and GP Turbo's are identical...obviously a different part number...different trims I am sure! :oops:  8)

Schooled

8)

The sunbird used different a/r, believe it was .48 on both sides.