Forged PISTONS for Oldsmobile 350 - 400 - 425 - 455

 
DSS piston comparason chart

 

 

Oldsmobile 350 - 400 - 425 - 455

GSX 350 Oldsmobile 4.057 STD. Bore.

Available Bore Sizes (4.057 = STD.) (4.080 = .023) (4.100 = .043) (4.125 = .068).

Add the bore size to the end of the part # IE. 6020X-4100 for a .043 oversize.

RING GROOVE

1/16 1/16 3/16

OLDS

CID.

Crank Stroke

Rod Length

Wrist

Pin Dia.

Ring

Size

Piston

Crown Type

Pin

Hgt

Aprox. Comp. Ratio

Head Type

Pistons

Piston & Ring Kit

72cc

80cc

84cc

350

3.385

6.000

0.980

1/16 1/16 3/16

Flat Top -12cc

1.625

8.74

8.12

7.75

Olds

6020X

PRK6020X

GSX 400 - 425 Oldsmobile 4.000 STD. Bore. ( Early 1965 to 1967 )

Available Bore Sizes 400 (4.000 = STD.) (4.030 = .030) (4.040 = .040) (4.060 = .060).

Available Bore Sizes 425 (4.125 = STD.) (4.155 = .030) (4.165 = .040) (4.185 = .060).

Add the bore size to the end of the part # IE. 6020X-4030 for a .030 oversize.

RING GROOVE

1/16 1/16 3/16

OLDS

CID.

Crank Stroke

Rod Length

Wrist

Pin Dia.

Ring

Size

Piston

Crown Type

Pin

Hgt

Aprox. Comp. Ratio

Head Type

Pistons

Piston & Ring Kit

72cc

80cc

84cc

400

3.975

7.000

0.980

1/16 1/16 3/16

Flat Top -12cc

1.625

9.84

9.13

8.82

Olds

6020CX

PRK6020CX

425

3.975

7.000

0.980

1/16 1/16 3/16

Flat Top -12cc

1.625

10.35

9.61

9.28

Olds

6020DX

PRK6020DX

GSX 455 Oldsmobile 4.125 STD. Bore.

Available Bore Sizes (4.125 = STD.) (4.155 = .030) (4.165 = .040) (4.185 = .060).

Add the bore size to the end of the part # IE. 6000X-4155 for a .030 oversize.

RING GROOVE

1/16 1/16 3/16

OLDS

CID.

Crank Stroke

Rod Length

Wrist

Pin Dia.

Ring

Size

Piston

Crown Type

Pin

Hgt

Aprox. Comp. Ratio

Head Type

Pistons

Piston & Ring Kit

72cc

80cc

84cc

455

4.250

6.735

0.980

1/16 1/16 3/16

Flat Top -12cc

1.750

11.00

10.21

9.86

Olds

6000X

PRK6000X

455

4.250

6.735

0.980

1/16 1/16 3/16

Dish -18cc

1.750

10.32

9.63

9.32

Olds

6003X

PRK6003X

GSX 481 Stroker Oldsmobile 4.125 STD. Bore.

Available Bore Sizes (4.125 = STD.) (4.155 = .030) (4.165 = .040) (4.185 = .060).

Add the bore size to the end of the part # IE. 6000X-4155 for a .030 oversize

RING GROOVE

1.5 1.5 3.0

OLDS

CID.

Crank Stroke

Rod Length

Wrist

Pin Dia.

Ring

Size

Piston

Crown Type

Pin

Hgt

Aprox. Comp. Ratio

Head Type

Pistons

Piston & Ring Kit

72cc

80cc

84cc

481

4.500

7.100

0.990

1.5 1.5 3 mm

Flat Top -12cc

1.260

11.59

10.75

10.38

Olds

6010X

PRK6010X

481

4.500

7.100

0.990

1.5 1.5 3 mm

Dish -19cc

1.260

10.85

10.12

9.79

Olds

6013X

PRK6013X