This original design, Smooth Bore TBI spacer increases plenum volume and air velocity for respectable horsepower and torque gains throughout the entire RPM range.

Trans-Dapt's Throttle Body Spacers are 50 STATE LEGAL (EXCLUDING 2539, 2639, 2737, 2739), and covered by The C.A.R.B. Executive Order #D-578.
 
Part # ApplicationDescriptionEngineFinishHeightMaterialTab Width Media
2737 1987-90 7.4L or 2" TBI unit on to 5.0-5.7L 1-3/4" Manifold- SMOOTH-BORE Throttle Body ADAPTER BB TBI to SB MANIFOLD Adapter
Photo
$47.53
2733
 
Chevrolet Blazer 1987 to 1991

Liter: 5.7, 5.0

 
Chevrolet C1500 1988 to 1991

Liter: 5.7, 4.3, 5.0

 
Chevrolet C2500 1988 to 1991

Liter: 5.7, 4.3, 5.0

 
Chevrolet C3500 1988 to 1991

Liter: 5.7

 
Chevrolet G10 1986 to 1991

Liter: 4.3, 5.0, 5.7

 
Chevrolet G20 1986 to 1991

Liter: 5.7, 4.3, 5.0

 
Chevrolet G30 1986 to 1991

Liter: 4.3, 5.7

 
Chevrolet K1500 1988 to 1991

Liter: 4.3, 5.0, 5.7

 
Chevrolet K2500 1988 to 1991

Liter: 4.3, 5.0, 5.7

 
Chevrolet K3500 1988 to 1991

Liter: 5.7

 
Chevrolet P30 1986 to 1991

Liter: 4.3, 5.7

 
Chevrolet R1500 Suburban 1989 to 1991

Liter: 5.7

 
Chevrolet R2500 Suburban 1989 to 1991

Liter: 5.7

 
Chevrolet R3500 1989 to 1991

Liter: 5.7

 
Chevrolet S10 1988 to 1991

Liter: 4.3

 
Chevrolet S10 Blazer 1988 to 1991

Liter: 4.3

 
Chevrolet V1500 Suburban 1989 to 1991

Liter: 5.7

 
Chevrolet V2500 Suburban 1989 to 1991

Liter: 5.7

 
Chevrolet V3500 1989 to 1991

Liter: 5.7

 
GMC C1500 1986 to 1991

Liter: 4.3, 5.0, 5.7

 
GMC C2500 1986 to 1991

Liter: 4.3, 5.0, 5.7

 
GMC C3500 1986 to 1991

Liter: 5.7, 5.0

 
GMC Jimmy 1986 to 1991

Liter: 5.7, 5.0

 
GMC K1500 1986 to 1991

Liter: 4.3, 5.0, 5.7

 
GMC K2500 1986 to 1991

Liter: 5.0, 5.7, 4.3

 
GMC K3500 1986 to 1991

Liter: 5.7

 
GMC R1500 Suburban 1987 to 1991

Liter: 5.7, 5.0

 
GMC R2500 Suburban 1987 to 1991

Liter: 5.7

 
GMC R3500 1987 to 1991

Liter: 5.7

 
GMC S15 Jimmy 1988 to 1991

Liter: 4.3

 
GMC Safari 1986 to 1991

Liter: 4.3

 
GMC Sonoma 1991

Liter: 4.3

 
GMC V1500 Suburban 1987 to 1991

Liter: 5.7

 
GMC V2500 Suburban 1987 to 1991

Liter: 5.7

 
GMC V3500 1987 to 1991

Liter: 5.7

 
GMC S15 1988 to 1990

Liter: 4.3

 
Chevrolet P20 1986 to 1989

Liter: 5.7

 
GMC R2500 1987 to 1989

Liter: 5.7, 5.0, 4.3

 
Chevrolet R10 Suburban 1987 to 1988

Liter: 5.7, 5.0

 
Chevrolet R20 1987 to 1988

Liter: 5.7, 4.3, 5.0

 
Chevrolet R20 Suburban 1987 to 1988

Liter: 5.7

 
Chevrolet R30 1987 to 1988

Liter: 5.7

 
Chevrolet V10 Suburban 1987 to 1988

Liter: 5.7

 
Chevrolet V20 Suburban 1987 to 1988

Liter: 5.7

 
Chevrolet V30 1987 to 1988

Liter: 5.7

 
Chevrolet R10 1987

Liter: 4.3, 5.0, 5.7

 
Chevrolet V10 1987

Liter: 5.7, 4.3, 5.0

 
Chevrolet V20 1987

Liter: 5.7

 
GMC Caballero 1986 to 1987

Liter: 5.0, 4.3

 
GMC R1500 1987

Liter: 5.7, 5.0, 4.3

 
GMC V1500 1987

Liter: 4.3, 5.7, 5.0

 
GMC V2500 1987

Liter: 5.7

 
Chevrolet C10 1986

Liter: 4.3, 5.0, 5.7

 
Chevrolet C10 Suburban 1986

Liter: 5.0, 5.7

 
Chevrolet C20 1986

Liter: 4.3, 5.0, 5.7

 
Chevrolet C20 Suburban 1986

Liter: 5.7, 5.0

 
Chevrolet C30 1986

Liter: 5.0, 5.7

 
Chevrolet K10 1986

Liter: 4.3, 5.0, 5.7

 
Chevrolet K10 Suburban 1986

Liter: 5.7, 5.0

 
Chevrolet K20 1986

Liter: 5.7

 
Chevrolet K20 Suburban 1986

Liter: 5.0, 5.7

 
Chevrolet K30 1986

Liter: 5.7

 
Chevrolet K5 Blazer 1986

Liter: 5.0, 5.7

 
GMC C1500 Suburban 1986

Liter: 5.0, 5.7

 
GMC C2500 Suburban 1986

Liter: 5.0, 5.7

 
GMC K1500 Suburban 1986

Liter: 5.7

 
GMC K2500 Suburban 1986

Liter: 5.7

1986-91 Chevy/GMC Trucks and SUVs with 4.3L V6 or 5.0L, 5.7L V8- SMOOTH-BORE Throttle Body Spacer
Photo Installation Instructions
$47.53
2734
 
Chevrolet Blazer 1992 to 1995

Liter: 4.3, 5.7

 
Chevrolet C1500 1992 to 1995

Liter: 4.3, 5.0, 5.7

 
Chevrolet C1500 Suburban 1992 to 1995

Liter: 5.7

 
Chevrolet C2500 1992 to 1995

Liter: 4.3, 5.0, 5.7

 
Chevrolet C2500 Suburban 1992 to 1995

Liter: 5.7

 
Chevrolet C3500 1992 to 1995

Liter: 5.7

 
Chevrolet G10 1992 to 1995

Liter: 4.3, 5.0, 5.7

 
Chevrolet G20 1992 to 1995

Liter: 4.3, 5.0, 5.7

 
Chevrolet G30 1992 to 1995

Liter: 5.7, 4.3

 
Chevrolet K1500 1992 to 1995

Liter: 5.7, 4.3, 5.0

 
Chevrolet K1500 Suburban 1992 to 1995

Liter: 5.7

 
Chevrolet K2500 1992 to 1995

Liter: 5.0, 5.7, 4.3

 
Chevrolet K2500 Suburban 1992 to 1995

Liter: 5.7

 
Chevrolet K3500 1992 to 1995

Liter: 5.7

 
Chevrolet P30 1992 to 1995

Liter: 5.7, 4.3

 
Chevrolet S10 1992 to 1995

Liter: 4.3

 
Chevrolet Tahoe 1995

Liter: 5.7

 
GMC C1500 1992 to 1995

Liter: 4.3, 5.7, 5.0

 
GMC C1500 Suburban 1992 to 1995

Liter: 5.7

 
GMC C2500 1992 to 1995

Liter: 5.7, 5.0, 4.3

 
GMC C2500 Suburban 1992 to 1995

Liter: 5.7

 
GMC C3500 1992 to 1995

Liter: 5.7

 
GMC Jimmy 1992 to 1995

Liter: 4.3

 
GMC K1500 1992 to 1995

Liter: 4.3, 5.7, 5.0

 
GMC K1500 Suburban 1992 to 1995

Liter: 5.7

 
GMC K2500 1992 to 1995

Liter: 5.7, 5.0, 4.3

 
GMC K2500 Suburban 1992 to 1995

Liter: 5.7

 
GMC K3500 1992 to 1995

Liter: 5.7

 
GMC P3500 1992 to 1995

Liter: 4.3, 5.7

 
GMC Sonoma 1992 to 1995

Liter: 4.3

 
GMC Yukon 1992 to 1995

Liter: 5.7

 
Chevrolet S10 Blazer 1992 to 1994

Liter: 4.3

1992-95 Chevy/GMC Trucks and SUVs with 4.3L V6 or 5.0L, 5.7L V8- SMOOTH-BORE Throttle Body Spacer
Photo Installation Instructions
$47.53
2735
 
Chevrolet C1500 1990

Liter: 7.4

 
Chevrolet C3500 1988 to 1990

Liter: 7.4

 
Chevrolet G30 1988 to 1990

Liter: 7.4

 
Chevrolet K3500 1988 to 1990

Liter: 7.4

 
Chevrolet P30 1987 to 1990

Liter: 7.4

 
Chevrolet R2500 Suburban 1989 to 1990

Liter: 7.4

 
Chevrolet R3500 1989 to 1990

Liter: 7.4

 
Chevrolet V2500 Suburban 1990

Liter: 7.4

 
Chevrolet V3500 1989 to 1990

Liter: 7.4

 
GMC C3500 1988 to 1990

Liter: 7.4

 
GMC K3500 1988 to 1990

Liter: 7.4

 
GMC R2500 Suburban 1987 to 1990

Liter: 7.4

 
GMC R3500 1987 to 1990

Liter: 7.4

 
GMC V3500 1987 to 1990

Liter: 7.4

 
Chevrolet R2500 1989

Liter: 7.4

 
GMC R2500 1987 to 1989

Liter: 7.4

 
Chevrolet R20 1987 to 1988

Liter: 7.4

 
Chevrolet R20 Suburban 1987 to 1988

Liter: 7.4

 
Chevrolet R30 1987 to 1988

Liter: 7.4

 
Chevrolet V20 Suburban 1987 to 1988

Liter: 7.4

 
Chevrolet V30 1987 to 1988

Liter: 7.4

1987-90 7.4L Chevy/GMC Trucks/SUVs and Motorhomes- SMOOTH-BORE Throttle Body Spacer
Photo Installation Instructions
$47.53
2736
 
Chevrolet C2500 1991 to 1995

Liter: 7.4

 
Chevrolet C2500 Suburban 1992 to 1995

Liter: 7.4

 
Chevrolet C3500 1991 to 1995

Liter: 7.4

 
Chevrolet G30 1991 to 1995

Liter: 7.4

 
Chevrolet K2500 1991 to 1995

Liter: 7.4

 
Chevrolet K2500 Suburban 1992 to 1995

Liter: 7.4

 
Chevrolet K3500 1991 to 1995

Liter: 7.4

 
Chevrolet P30 1991 to 1995

Liter: 7.4

 
GMC C2500 1991 to 1995

Liter: 7.4

 
GMC C2500 Suburban 1992 to 1995

Liter: 7.4

 
GMC C3500 1991 to 1995

Liter: 7.4

 
GMC K2500 1991 to 1995

Liter: 7.4

 
GMC K2500 Suburban 1992 to 1995

Liter: 7.4

 
GMC K3500 1991 to 1995

Liter: 7.4

 
Chevrolet C1500 1991 to 1993

Liter: 7.4

 
Chevrolet R2500 Suburban 1991

Liter: 7.4

 
Chevrolet R3500 1991

Liter: 7.4

 
Chevrolet V3500 1991

Liter: 7.4

 
GMC R2500 Suburban 1991

Liter: 7.4

 
GMC R3500 1991

Liter: 7.4

 
GMC V3500 1991

Liter: 7.4

1991-95 4.3L V6 or 5.0L, 5.7L V8 Chevy/GMC Trucks and SUVs- SMOOTH-BORE Throttle Body Spacer
Photo Installation Instructions
$103.36
 
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http://hedman.com/images/ePIM/original/2733-2739.jpg
http://hedman.com/images/ePIM/original/2734.jpg
http://hedman.com/images/ePIM/original/2735.jpg
http://hedman.com/images/ePIM/original/2736.jpg