1000798 AutoTec Forged Dome Piston Set for Chrysler 426 Hemi Engines [4.500 in. Bore]

Name: 1000798 AutoTec Forged Dome Piston Set for Chrysler 426 Hemi Engines [4.500 in. Bore]
Brand: RACETEC PISTONS
SKU: 613-1000798
Price: 1014.30 USD
Availability: InStock

^$1,014³⁰$1127.00You Save$112.70

Ships on 10/12/2026

Lowest Price Guarantee

AutoTec Forged Piston Set

Chrysler 426 Hemi

4.500 in. Bore

Forged 4032 Aluminum

4.150 in. Stroke

6.860 in. Rod Length

1.795 in. Compression Height

62 cc Crown Volume

1.5 x 1.5 x 3.0 mm Ring Grooves

Set of 8

Racetec 1000798 AutoTec Dome Piston Set Features:

Manufactured from low-expansion, high-silicon, 4032 material with side reliefs that's excellent for street or strip applications
CNC Precision machined ring grooves for 1.5, 1.5, 3.0 rings unless otherwise indicated
Top ring land gas distribution groove to enhance performance and improve ring seal
1.031-2800-51-15C wrist pins, pin fitting, wire locks, broached pin oilers and accumulator grooves are included
Diamond turned skirts

RaceTec 1000798 Autotec Dome Piston Set Specs:

Engine Family: Chrysler 426 Hemi
Displacement reference: 528 cu. in. (8.7L)
Bore: 4.500 in.
Stroke: 4.150 in.
Rod Length: 6.860 in.
Compression Height: 1.795 in.
Crown Volume: 62 cc
Piston Style: Dome
Alloy: 4032
Wrist Pin Diameter: 1.031 in.
Ring Grooves: 1.5 mm Top, 1.5 mm Second, 3.0 mm Oil

RaceTec 1000798 AutoTec Dome Piston Set Notes:

Requires RaceTec AT 4500 Ring Set or Equivalent (Sold Separately)
Compression Ratios:
- 10.4 @ w/168 cc Heads
- 10 @ w/174 cc Heads
Rod clearance milled to 1.300 in.

RaceTec AutoTec Series Pistons for Chrysler Applications – Precision 4032 Alloy Performance at an Unmatched Value

RaceTec AutoTec Series Pistons for Chrysler applications deliver high-quality, precision-manufactured forged pistons designed for builders who demand performance, durability, and affordability. Crafted from 4032 high-silicone aluminum alloy, these pistons offer excellent wear resistance, low expansion rates, and reduced friction, featuring diamond-turned ring grooves and skirts made on the same advanced equipment as RaceTec’s premium line. Engineered for muscle car restorations, performance street rods, and spec racing classes, AutoTec pistons handle mild nitrous, small turbo, or supercharged applications, with proven results exceeding 850+ horsepower in small block builds. Choose RaceTec AutoTec Series Pistons for those seeking a trusted, high-value performance solution.

Part TypePiston

Product LineRaceTec AutoTec Series Pistons for Chrysler

BrandRACETEC PISTONS

Package Height6.0

Package Width12.0

Package Length12.0

Weight12.0 PG

Part CategoryPerformance Parts

Pin Lock Rings IncludedYes

Compression Height (In)1.795

Bore (In)4.5

Wrist Pin StylePress or Full Floating