- 60V6 Engine Differences

Differences between stock GM 60V6 engines:



2.8L IH
3.1L IH
3.4L IH
3100 '00+
3400 '00+
LX-9 3500 LZ-4 3500 LZ-9 3900

Bore

89

89

92

89

92

94

99

99

Stroke

76

84

84

84

84

84

76

84

Compression Ratio

8.9:1

8.8:1

9.0:1

9.5:1

9.6:1

9.8:1

9.8:1

9.8:1

HP

Carb-110

MPFI-135

140

160

170

180

205

220

240

TQ

Carb-148

MPFI-160

180

180

195

210

220

220 240

CARB Intake

Y Y Y N N N N N

EFI

Y Y Y Y Y Y Y Y

Crank Material

Iron Iron Iron Iron Iron Steel (1) Steel Steel

Rocker Fulcrum Type

Ball

Ball

Ball

Roller

Roller

Roller

SPM Roller

SPM Roller

Rocker Ratio

1.5:1 1.5:1 1.5:1 1.6:1 1.6:1 1.6:1 1.7:1 1.7:1

Lifter Type

Flat Flat Flat Roller Roller Roller Roller Roller

Con Rod Type

Cast Cast Cast Cast Cast SPM SPM SPM

Oil Squirters

N N N N N Y (2) Y (3)
Y (3)

U-Flow Cooling

Y Y Y N N N Y Y

LS Style intake ports

N N N N N N Y Y

Variable Intake

N N N N N N N Y

Variable Valve Timing

N N N N N N Y Y

Drive-by-wire TB

N N N N N (4)
Y Y Y

Starter Location

Right Right Right Left Left Left Left Left

IH refers to Iron head engines

 

(1) Both Iron & Steel cranks were produced in the LX-9

(2) Oil squirters on cylinders 5 & 6 only

(3) Oil squirters on every cylinder

(4) China built 3400s have drive by wire throttle body

SPM - Sintered Powdered Metal is some of the latest in manufacturing technology. SPM parts are stronger than forged counterparts.

"Stronger than "pink"