GM 2.8 liter 60-Degree V-6

A nice steep driveway...

The top picture has a red Bowtie between the stripe, and the next one has 173.

A Chevrolet S-10

A close-up of the fender.

The 2.8L 60 degree V6 in the S-10.

Updated 29 December 2005


Stay tuned for updates... I may also be moving this page and the Varajet page to a site that hopefully won't exceed bandwidth as often... The Varajet page will be huge, and it's not even halfway done yet...

This is my report I am writing about the GM V6/60 engines. I will also have carburetor information and fuel injection information. I am also working on citing my sources.

Introduction

The GM V6/60 engine was used in a wide variety of applications. It was used in Chevrolet S10 trucks and Blazers, Chevrolet Camaros, Cadillac Cimmarons, Pontiac Firebirds, and Buick Centurys. It was sold to Jeep for use in the Jeep Cherokee, to Isuzu for some four-wheel-drive vehicles, and even to Mercury Marine for use as an inboard boat engine. It used a variety of fuel delivery systems including: the Rochester Products Division Varajet II 2SE and E2SE carburetor, throttle body injection, multi-port fuel injection, and sequential fuel injection. Two ignition systems were used. Earlier models used the GM High energy ignition system, while later models used a digital ignition system. It was used with automatic transmissions, as well as manual transmissions. It also uses metric fasteners exclusively.

It was used in front wheel drive and rear wheel drive vehicles. Front wheel drive (FWD) vehicles used electric cooling fans. The location of the water pump is also different. In large engine compartments have the water pump mounted directly above the crankshaft. In smaller engine compartments, it is mounted above and to the side of the regular location. Lower-profile intake plenums are used, and the engines are mounted at a steeper angle for more hood clearance. Due to differences in the engine and accesory mounts, they aren't interchangeable.

The 60 refers to the angle between the cylinder banks. There is 120 of crankshaft rotation between each cylinder firing.

Engine Size (liters)

Cubic Inch Displacement

2.8

173

3.1

191

3.4

207

Timeline

From "How to Rebuild your GM 60 Degree V6"


Beginning of quoted material
In other words, its not my material

First Generation

1980

1981

1982

1984

1985

Second Generation

1987

1988

1990

1993

END OF QUOTED material

2.8 Liter V6 Engine

The 2.8 V6/60 was offered as a transverse mount and a longitudinal mount engine. The transverse mount was used in the front wheel drive vehicles, and the longitudinal mount was used in rear wheel drive vehicles (Camaro). It was first offered in 1980 in the GM A- and X-body cars.

RPO

Code

FY

LY

Output

FI or Carburetor

Mounting

Found in

LB6

85

86

HO

2.8W

UFI

Transverse

LB8

85

86

2.8S

MFI

Longitudinal

LC1

82

84

HO

2.8-1

2 BBL

Longitudinal

LE2

80

86

2.8X

2BBL

Transverse

LG9

MFI

TURBO

LH7

82

85

HO

2.8Z

2BBL

Transverse

LL1

83

84

2.8L

LL2

86

86

2.8R

TBI

LR2

82

85

2.8B

2BBL

Truck

GM S-series

L44

85

86

HO

2.8-9

MFI

Pontiac Fiero

Chevrolet Camaro

Year

Code

Manufacturer

Fuel system

Horsepower

Torque

1982

1

Chevrolet

2bbl carb.

102@4800

145@2400

1983

1

Chevrolet

2bbl carb.

1984

1

Chevrolet

2bbl carb.

1985-87

S

Chevrolet

MFI

1988

S

MFI

135@5100

165@3600

1989

S

MFI

135@5100

165@3600

1990

S

MFI

135@5100

165@3600

Pontiac Firebird

Year

Code

Manufacturer

Fuel System

Horsepower

Torque

1982

1

Chevrolet

2 bbl carb.

102@4800

1983

1

L

125@5400

1984

1

H.O.

L

125@5400

1985-87

S

MFI

135@5400

1988

S

MFI

135@5400

165@3600

1989

S

MFI

135@5400

165@3600

Chevrolet S-10

Year

Code

Manufacturer

Fuel System

Horsepower

Torque

1982

B

2bbl carb.

115 @ 4800

150 @ 2100

1983

B

2bbl carb.

115 @ 4800

150 @ 2100

1984

B

2bbl carb.

115 @ 4800

150 @ 2100

1985

B

2bbl carb.

115 @ 4800

150 @ 2100

1986

B

2bbl carb.

115 @ 4800

150 @ 2100

R

FI

125 @ 4800

150 @ 2200

1987

R

FI

125 @ 4800

150 @ 2200

1988

R

EFI

125 @ 4800

150 @ 2400

1989

R

EFI

125 @ 4800

150 @ 2400

1990

R

EFI

125 @ 4800

150 @ 2400

1991

R

EFI

125 @ 4800

150 @ 2400

1992

R

EFI

125 @ 4800

150 @ 2400

1993

R

TFI

125 @ 2800

150 @ 2200

GM A & X Body

Year

Code

Manufacturer

Fuel System

Horsepower

Torque

1980-81

X

2bbl carb.

115 @4800

150 @2000

X

(calif)

110 @4800

140 @2000

Z1

135 @4800

165 @2400

1982

X

112 @4800

145 @2100

Z1

135 @5400

142 @2400

1983

X

112 @4800

145 @2100

Z1

135 @5400

142 @2400

1984

X

112 @4800

145 @2100

Z1

135 @5400

142 @2400

1985

1986

1987

1988

W

PFI

130 @4800

155 @3600

1989

W

PFI

130 @4800

155 @3600

1990

1991

1 Is High Output

GM LBody

Year

Code

Manufacturer

Fuel System

Horsepower

Torque

1988

W

PFI

125 @4500

160 @3600

1989

W

PFI

125 @4500

160 @3600

GM J Body

Year

Code

Manufacturer

Fuel System

Horsepower

Torque

1983-87

W

Chevrolet

FI

120 @4800

155 @3600

1988

W

FI

120 @4800

155 @3600

Cavalier

1989

W

FI

120 @4800

155 @3600

Cavalier, Cimarron

GM P Body

Year

Code

Manufacturer

Fuel System

Horsepower

Torque

1985

9

MFI

130 @5400

160 @3600

1986-87

9

MFI

140@5200

170@3600

1988

9

MFI

135@5400

170@3600

GM W Body

Year

Code

Manufacturer

Fuel System

Horsepower

Torque

1988

W

MFI

125 @4500

160 @ 3600

1989

W

MFI

125 @4500

160 @ 3600

Jeep Cherokee, Wagoneer, Commanche

Year

Code

Manufacturer

Fuel System

Horsepower

Torque

1984

W

2bbl carb.

110 @4800

148 @2000

1985

W

2bbl carb.

110 @4800

148 @2000

1986

W

2bbl carb.

110 @4800

148 @2000

1987

W

2bbl carb.

110 @4800

148 @2000

1988

W

2bbl carb.

110 @4800

148 @2000

3.1 Liter V6 Engine

RPO

Code

FY

LY

Output

FI or Carburetor

Mounting

Found in

LG6

3.1

TBI

LGS

Turbo

4FI

LHO

3.1

MFI

L64

3.1

Flex-fuel

MFI

L82

3.1

HO

MFI

GM Van

Year

Code

Manufacturer

Fuel System

Horsepower

Torque

1990

D

EFI

120 @4400

175 @2200

1991

D

EFI

120 @4400

175 @2200

1992

D

EFI

120 @4400

175 @2200

1993

D

TI

120 @4400

175 @2200

1994-95

D

TI

120 @4400

175 @2200

GM A Body

Year

Code

Manufacturer

Fuel System

Horsepower

Torque

1989

T

PFI

120 @4200

175 @2200

1990

T

PFI

120 @4200

175 @2200

1991

T

PFI

140@4400

180@3200

1992

T

1993

T

1994-95

M

SFI

160 @5200

185 @4000

GM F Body

Year

Code

Manufacturer

Fuel System

Horsepower

Torque

1990

T

MFI

140 @4400

180 @3600

1991

T

MFI

140 @4400

180 @3600

1992

T

MFI

140 @4400

180 @3600

GM J Body

Year

Code

Manufacturer

Fuel System

Horsepower

Torque

1990

T

PFI

140 @4500

180 @3600

1991-92

T

PFI

140 @4500

180 @3600

1993

T

MFI

140 @4200

185 @3200

1994-95

T

MFI

140 @4200

185 @3200

GM L Body

Year

Code

Manufacturer

Fuel System

Horsepower

Torque

1990

T

PFI

135 @400

180 @3600

1991-92

T

PFI

140 @4200

185 @3200

1993

T

PFI

140 @4200

185 @3200

1994-95

T

PFI

140 @4200

185 @3200

GM W Body

Year

Code

Manufacturer

Fuel System

Horsepower

Torque

1989

T

MFI

140 @4500

185 @3600

1990

T

MFI

140 @4400

185 @3200

V

MFI Turbo

205 @4800

220 @3000

1991

T

MFI

140 @4500

185 @3600

1992

T

MFI

140 @4500

185 @3600

GM 60-Degree 2.8 Liter V6

RPO

Code

FY

LY

Output

FI or Carburetor

Mounting

Found in

LB6

85

86

HO

2.8W

UFI

Transverse

LB8

85

86

2.8S

MFI

Longitudinal

LC1

82

84

HO

2.8-1

2 BBL

Longitudinal

LE2

80

86

2.8X

2BBL

Transverse

LG9

MFI

TURBO

LH7

82

85

HO

2.8Z

2BBL

Transverse

LL1

83

84

2.8L

LL2

86

86

2.8R

TBI

LR2

82

85

2.8B

2BBL

Truck

Chevrolet S-10

L44

85

86

HO

2.8-9

MFI

Pontiac Fiero

UFI:

MFI: Mechanical Fuel Injection or Multi-port Fuel Injection

TBI:

2BBL : Two Barrel Carburetor

VIN Codes

Year

Chevrolet

Chevrolet , GMC, Oldsmobile, and Pontiac Truck

Pontiac

Oldsmobile

Buick

Cadillac

1980

7

7

7

7

1981

X

Z

X

X

X

1982

X

Z

1

B

X

Z

1

X

Z

X

Z

1983

X

Z

1

B

L

X

Z

1

X

Z

X

Z

1984

X

Z

1

B

L

X

Z

1

X

Z

X

Z

1985

W (FI)

X (2BBL)

B

R

L

S (FI)

W (FI)

X (2BBL)

9 (FI)

W

X

W (FI)

X

W

1986

W (FI)

X 2BBL

B

R

L

S (FI)

W (FI)

X (2BBL)

9 (FI)

W

X

W (FI)

X

W

1987

S (MFI)

W (MFI)

B (FI)

R (TBI)

S (MFI)

W (MFI)

W (MFI)

W (MFI)

W (MFI)

1988

S (MFI)

W (MFI)

B (FI)

W (MFI)

W (MFI)

W (MFI)

1989

S (FI)

W (FI)

R (FI)

S (FI)

W (FI)

W (FI)

W (FI)

1990

S (FI)

W (FI)

R (FI)

S (FI)

W (FI)

W (FI)

W (FI)

1991

Chevrolet/GMC

R (EFI)

1992

Chevrolet/GMC

R (EFI)

1993

Chevrolet/GMC

R (EFI)

1994

Chevrolet/GMC

R (EFI)

1995

1996

1997

1998

1999

2000

2001

This information from Haynes Techbook # 10430 Automotive Reference Manual & Illustrated Automotive Dictionary. If two or more rows from the same column are the same color, the book showed those years as combined. I do not have information for the blank spaces.

The 2.8 liter V6 was installed in the following cars:

Chevrolet

Chevrolet , GMC, Oldsmobile, and Pontiac Truck

Buick

Cadillac

Oldsmobile

Pontiac

*Celebrity

Beretta

Corsica

Cavalier

Citation

Camaro

S10/S15 Truck,

Blazer,

Jimmy

Regal

Skylark

Cimarron

Omega

Fiero

Tempest

Grand Prix

Phoenix

Body

Style :

A

J

L

W

X

BASIC TUNE-UP PARTS LIST

As far as I know, these part numbers are correct. Please double check before you buy. Prices vary from location to location.

Part

AC Delco

GP Sorenson

Motorcraft

Napa

Purolator

Wix

Fram

Wells

Crankcase Air Filter

FB-73B

FB-102

2994

B13131M

B13161M

42994

BA3642

PCV Valve

CV-789CB

CV793C

PV-789M

PV793M

E114

Ignition Rotor

D434

DR917

This is a picture of an instrument cluster ground bolt (it also holds the dash in place) on an 85 S10. It is located on the driver's side near the cab wall very close to the lever for the vents.

Engine Books

ISBN

Title

Author

0879388412

How to rebuild your GM 60 degree V6

0898031265

Basic how to tune your car 7th ed. pages 196-201

1557880875

Chevrolet Power The Official Factory Performance Guide. Pages 166-177

093147213X

V6 Performance

0898031265

Basic How to tune your car No. 7. Pages 40-45, 196-201

0801976707

Chilton's Auto Repair Manual 1980-1987

Tuning Up Autos and Trucks

Webb, Milt

Rochester Carburetor Books

ISBN

Title

Author

1563920689

Haynes Techbook Rochester Carburetor Manual

0895863014

Rochester Carburetors

Roe, Doug

General Books

ISBN

Title

Author

0895770881

Reader's Digest Complete Car Care Manual (general info) 240-247

0764550896

Auto Repair for Dummies

1563921693

Haynes Techbook General Motors Automatic transmission overhaul

0471304948

101 Easy to do Auto Repairs

1563922347

Haynes Automotive Emissions Control Manual

0822750171

Peterson's Trucking Trends 1977

Haynes Fuel Injection Manual 1986 through 1996

S-Series Books

ISBN

Title

Author

0801988446

Chilton's Complete Car Care Chevy S10/GMC S15 Pickups 1982-93

Chiltons

0801981425

Chilton's S-10 GMC S-15 Pickups 1982-91

1563921162

Haynes Chevrolet & GMC S10 & S15 Pickups 1982-1983

02418510896

Clymer S- & T-Series 1982-1986

155788353X

Chevy S-10/GMC S-15 Handbook

Truckin' Magazine

Other Cars

ISBN

Title

Author

Haynes Camaro 1982-92

Haynes Fiero 1984-1988

Haynes Firebird 1982-92

Clymer Camaro

V8 Books

ISBN

Title

Author

JTR V8 Conversion Manual

1850107629

Haynes Chevrolet Engine Overhaul Manual

1855200775

Chevrolet High Performance Tips and Techniques

1557880875

Chevrolet Power The Official Factory Performance Guide.

---TIP: In a junkyard and can't find any S10s? Look for Camaros and Firebirds or Jeep Cherokees with a2.8 V6. Some of the parts are the same.

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