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1986-1987 BUICK GRAND NATIONAL

GN Turbochargers & Cartridges

TURBONETICS has pioneered the evolution of Street Legal (CARB exempt*) Buick GN turbocharger products from basic compressor upgrades to the innovative Stage III “CHEETAH” and now the CERAMIC BALL BEARING-STAGE III. Continuous involvement with “heavy hitter” GN engine builders and racers has provided a level of experience unequaled in the trade. TURBONETICS offers the widest selection of turbos and turbo-related accessories for the GN than any other source - ALL 50 STATE LEGAL ! (CARB EO D-99-2, D-99-3)

GN COMPRESSOR UPGRADE GN COMPRESSOR UPGRADE !
High-performance upgrade for top-end flow improvment coupled with higher efficiency and race proven durability. Includes PN 10416 inlet group (see page 11) and choice of dry or water-jacketed bearing housing (specify).
  • ”Super H” compressor wheel
  • Dynamic seal conversion
  • Blueprint assembly / competition balance
  • Polished compressor housing


GN TURBINE HOUSING WITH INTEGRAL DELTAGATE MOUNT

GN TURBINE HOUSING WITH INTEGRAL DELTAGATE MOUNT
TURBONETICS now offers both the stock .63 and the high perfomance .82 A/R turbine housing with integral Deltagate mount in both the stock and the Stage III turbine trims. Use with the stock wastegate (PN 20251, Block-off Flange, required) or the popular DELTAGATE (not included).

PART NUMBER PRICE TURBINE APPLICATION EMISSIONS CATEGORY
20240-63 Call .63 A/R STOCK TURBINE 1 REPLACEMENT
20240-82 Call .82 A/R STOCK TURBINE 1 CARB EO D-99-2 (A)
20240-633 Call .63 A/R STAGE 3 TURBINE 1 CARB EO D-99-3
20240-823 Call .82 A/R STAGE 3 TURBINE 1 CARB EO D-99-3

THE “GN CHEETAH“ SERIES
All TURBONETICS “CHEETAH” series turbos are direct “bolt-on” and may be used with the original exhaust/wastegate configuration or the recommended DELTAGATE, Variable Boost Control Kit (PN 10402), and the DELTAGATE Discharge Header (PN 20293).

THE “GN CHEETAH“ SERIES THE PERFORMANCE “CHEETAH”
Includes all GN “Super H” COMPRESSOR UPGRADE (PN 10411) features plus your choice of the .63 A/R (PN 20240-63) or the .82 A/R (PN20240-82) turbine housing with integral DELTAGATE mount. (DELTAGATE not included.)


THE STAGE III CHEETAH
Developed specifically for strong street / strip performance, the STAGE 3 CHEETAH utilizes an advanced turbine wheel design originally developed for Navistar. Combined with the SUPER H compressor section, this unit delivers quick boost response with efficient turbine performance.

PART # DESCRIPTION PRICE
EA-CHRA BUICK G/N STAGE III CHRA ASSY. Call
EA-TURBO BUICK G/N STAGE III TURBO ASSY. Call
ED-CHRA BUICK G/N STAGE III CHRA ASSY. - BALL BRG. Call
BD-TURBO BUICK G/N STAGE III TURBO ASSY. - BALL BRG. Call
10610 PERMACOAT COLOR OPTION, COMPRESSOR HOUSING Call
  POLISHED COMPRESSOR HOUSING Call
  CERAMIC TURBINE HOUSING COATING Call

THE STAGE IV CHEETAH
For the serious street / strip performer, TURBONETICS offers a totally custom turbo that still is a “bolt on”. THE STAGE IV CHEETAH can be assembled with any combination of turbine and compressor wheels in our performance line-up from stock up to the popular TO4E and “T-Series.” Contact a TURBONETICS Turbo Specialist for application assistance and availability.

PART # DESCRIPTION PRICE
EB-CHRA BUICK G/N STAGE IV CHRA ASSY. Call
EB-TURBO BUICK G/N STAGE IV TURBO ASSY. Call
EF-CHRA BUICK G/N STAGE IV CHRA ASSY. - BALL BRG. Call
EF-TURBO BUICK G/N STAGE IV TURBO ASSY. - BALL BRG. Call
10610 PERMACOAT COLOR OPTION, COMPRESSOR HOUSING Call
  POLISHED COMPRESSOR HOUSING Call
  CERAMIC TURBINE HOUSING COATING Call

THE STAGE V CHEETAH
For the ultimate in bolt-on performance, the STage V Cheetah combines the proven 60-1 compressor section with the new high flow, high efficiency Stage V turbine wheel. This combination gives the flow potential for 550 pluss horsepower.

PART # DESCRIPTION PRICE
EC-CHRA BUICK G/N STAGE V CHRA ASSY. Call
EC-TURBO BUICK G/N STAGE V TURBO ASSY. Call
EG-CHRA BUICK G/N STAGE V CHRA ASSY. - BALL BRG. Call
EG-TURBO BUICK G/N STAGE V TURBO ASSY. - BALL BRG. Call
10610 PERMACOAT COLOR OPTION, COMPRESSOR HOUSING Call
  POLISHED COMPRESSOR HOUSING Call
  CERAMIC TURBINE HOUSING COATING Call

NOW ! ALL GN TURBOCHARGERS ARE AVAILABLE WITH THE EXCLUSIVE TURBONETICS CERAMIC BALL-BEARING OPTION !!!

For the ULTIMATE in GN street/strip performance, a CERAMIC BALL-BEARING equiped GN turbocharger provides unparalleled acceleration and response that eliminates the need for a high-stall torque converter. Tested and proven on the street and the strip, GN CERAMIC BALL-BEARING turbos are the most durable available. ALL 50 STATE LEGAL!

(Exchange units are based on original or aftermarket rebuildable core. Wastegate/swingvalve not included.)

Updated on February 15, 2008