1001858 RaceTec Forged Dish Piston Set for GM Gen V LT4 Engines [4.065 in. Bore]

Name: 1001858 RaceTec Forged Dish Piston Set for GM Gen V LT4 Engines [4.065 in. Bore]
Brand: RACETEC PISTONS
SKU: 613-1001858
Price: 987.30 USD
Availability: InStock

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Ships on 10/12/2026

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RaceTec Forged Piston Set

GM Gen V LT4

4.065 in. Bore

Forged 2618 Aluminum

3.622 in. Stroke

6.125 in. Rod Length

1.304 in. Compression Height

-8 cc Crown Volume

1.5 x 1.5 x 3.0 mm Ring Grooves

Set of 8

Racetec 1001858 RaceTec Dish Piston Set Features:

Manufactured on 2618 material forgings that will accept most extreme racing applications
CNC Precision used in every manufacturing operation
Valve pockets machined for oversized valves and high lift cams
Critically machined ring grooves for 1.5mm, 1.5mm, 3.0mm rings
Top ring land gas distribution grooves to enhance performance and improve ring seal
927-22250-51-18C or 945-2250-51-15C 51 Series Heavy Duty Chromoly wrist pins, pin fit, wire locks, double pin oilers, and accumulator groove are included
Diamond tooling used throughout production including ring grooves and skirts

RaceTec 1001858 Racetec Dish Piston Set Specs:

Engine Family: GM Gen V LT4
Displacement reference: 376 cu. in. (6.2L)
Bore: 4.065 in.
Stroke: 3.622 in.
Rod Length: 6.125 in.
Compression Height: 1.304 in.
Crown Volume: -8 cc
Piston Style: Dish
Alloy: 2618
Wrist Pin Diameter: 0.927 in.
Ring Grooves: 1.5 mm Top, 1.5 mm Second, 3.0 mm Oil

RaceTec 1001858 RaceTec Dish Piston Set Notes:

Requires RaceTec RT4065 Ring Set or Equivalent (Sold Separately)
Compression Ratios:
- 10.0:1 @ w/65.5 cc Heads
Fits Gen V LT4 with Fuel Bowl for Direct Injection
Oil Squirter may need to be modified for clearance

RaceTec Series Pistons For Chevy Applications: Ultimate 2618 Alloy Strength For High-Horsepower Builds

RaceTec Series Pistons represent the highest level of precision-engineered performance, manufactured from forged or billet 2618 aluminum alloy for extreme durability and strength. Designed using advanced CAD technology and modern CNC machining, these pistons feature diamond-turned ring grooves and skirts for superior sealing, reduced friction, and consistent performance under high horsepower demands. The RaceTec Series provides proven reliability for everything from shelf applications with mild nitrous or boost to fully custom Top Fuel, vintage racing, and extreme power builds.

Part TypePiston

Product LineRaceTec Series Pistons for Chevy

BrandRACETEC PISTONS

Package Height6.0

Package Width12.0

Package Length12.0

Weight12.0 PG

Part CategoryPerformance Parts

Pin Lock Rings IncludedYes

Compression Height (In)1.304

Bore (In)4.065

Wrist Pin StylePress or Full Floating