1000580 AutoTec Forged Flat Top Piston Set for Pontiac 400/428 Engines [4.150 in. Bore]

Name: 1000580 AutoTec Forged Flat Top Piston Set for Pontiac 400/428 Engines [4.150 in. Bore]
Brand: RACETEC PISTONS
SKU: 613-1000580
Price: 719.10 USD
Availability: InStock

^$719¹⁰$799.00You Save$79.90

Ships on 10/12/2026

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AutoTec Forged Piston Set

Pontiac 400/428

4.150 in. Bore

Forged 4032 Aluminum

4 in. Stroke

6.625 in. Rod Length

1.575 in. Compression Height

-5 cc Crown Volume

1.5 x 1.5 x 3.0 mm Ring Grooves

Set of 8

Racetec 1000580 AutoTec Flat Top 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
980-2700-51-15C wrist pin, pin fitting, wire locks, broached pin oilers and accumulator grooves are included
Diamond turned skirts

RaceTec 1000580 Autotec Flat Top Piston Set Specs:

Engine Family: Pontiac 400/428
Displacement reference: 433 cu. in. (7.1L)
Bore: 4.150 in.
Stroke: 4 in.
Rod Length: 6.625 in.
Compression Height: 1.575 in.
Crown Volume: -5 cc
Piston Style: Flat Top w/2 Valve Reliefs
Alloy: 4032
Wrist Pin Diameter: 0.980 in.
Ring Grooves: 1.5 mm Top, 1.5 mm Second, 3.0 mm Oil

RaceTec 1000580 AutoTec Flat Top Piston Set Notes:

Requires RaceTec AT 4155 Ring Set or Equivalent (Sold Separately)
Compression Ratios:
- 11.4 @ w/72 cc Heads
- 10.5 @ w/80 cc Heads
- 9.9 @ w/87 cc Heads

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

RaceTec AutoTec Series Pistons for Pontiac 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 Pontiac

BrandRACETEC PISTONS

Package Height6.0

Package Width12.0

Package Length12.0

Weight12.0 PG

Part CategoryPerformance Parts

Pin Lock Rings IncludedYes

Compression Height (In)1.575

Bore (In)4.15

Wrist Pin StylePress or Full Floating