4.020'' +020 Holden 355 Stroker Pistons, Flat Top, 4032 Forged Pistons, CH 1.125" (3.480" x 6.000)

4.020" Holden 355 Stroker Pistons - 4032 Forged Pistons suit Holden 355 Stroker Kit pistons. 

True Flat Top - No valve reliefs. Maximum Compression. 

Get more power & torque when using the long rod, 6.000" conrod in your Holden 355 stroker combo. 

These are a premium forged 6 inch rod combo with flat top pistons for your Holden 355 stroker combination. 

In addition, the modern thin ring pack of 1.5mm! Less drag, less friction losses equals more power & quicker 1/4 mile times!

• Manufactured on forged side relief, 4032 low expansion, high silicon material excellent for street or strip applications.

• CNC Precision machined ring grooves for 1.5mm, 1.5mm, 3.0mm rings.

• Top ring land gas distribution groove to enhance performance and improve ring seal.

• 927 wrist pins, pin fit, wire locks, broached pin oilers, and accumulator groove.

• Diamond turned skirts.

Recommended Piston Rings: AT-4020H PlasmaMoly or RT-4020S - Stainless Steel

Engine:  Holden 304 / 308 Strokers

Engine Capacity: 353cu 355 Holden Stroker

Bore: 4.020''

Oversize: +020"

Compression Height: 1.125"

Holden 308 Stroker Combination:  Crank 3.480" x Rod 6.000"

Material: 4032 Forged Pistons,

Piston Top:   0cc FLAT TOP - No reliefs

Compression Ratio: with 56cc chamber volume: 12.14:1

Compression Ratio: with 62cc chamber volume: 11.20:1

Gudgeon Pin: 0.927" Chevy - Includes pins

Wire Locks:  Included 

Piston Ring Sizes:  1.5mm, 1.5mm, 3.0mm

Piston Rings: NOT included 

Recommended Piston Rings: AT-4020H PlasmaMoly RT-4020S - Stainless Steel