Mahle

Mahle Motorsport Big Block Pontiac 455 Stroker Flat Top Pistons 4.185 in. 468ci

SKU: mhl930275085 UPC: 930275085
In stock
Backordered From Supplier – Call for Availability

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This item may be on backorder. Please contact us to confirm supplier availability and estimated lead time before ordering.

Call: (503) 662-9752 | Email Us: info@dfispdx.com

$831.15

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Verified Fitment & Application Support

This product is selected for proper fitment and compatibility with the listed engine application. Our team is available to assist with fitment questions, installation considerations, and supporting components to ensure a smooth install and reliable performance.

Got Questions? Feel free to email us or call us at (503) 235-1947

Compliance & Restrictions
California Proposition 65 (Prop 65)
WARNING: This product can expose you to chemicals which is known to the State of California to cause cancer and/or reproductive harm. For more information, visit www.P65Warnings.ca.gov.
CARB / California Emissions Compliance
This item may be restricted in California and other regions with emissions regulations. If applicable, it is intended for competition/off-road use only unless otherwise stated. It is the customer’s responsibility to confirm local compliance before purchase. Orders shipping to restricted areas may be canceled.

Mahle Motorsport builds this forged flat top for the Big Block Pontiac 455 stroker, machined to a 4.185 in. bore. Crown volume is -6.4cc, which works out to 12.0:1 with a 72cc chamber.

Key Features

  • 4032 forged aluminum construction
  • Bore: 4.185 in. | Stroke: 4.250 in. | Rod: 6.800 in
  • Compression height: 1.285 in
  • Pin diameter: 0.990 in
  • Crown volume: -6.4cc
  • Compression ratio: 12.0:1 with a 72cc chamber, 11.0:1 with a 80cc chamber, 10.6:1 with a 84cc chamber
  • 1.0, 1.0, 2.0mm file fit ring set included
  • Listed weight: 542 grams each
  • Top ring distance (fireland) 0.236 in.; will not work in 400 blocks with reliefs
  • Sold as a set of 8 pistons

Fitment

  • Big Block Pontiac 455 stroker
  • 4.185 in. bore

Product Details

  • Manufacturer Part Number: 930275085
  • Brand: Mahle Motorsport
  • Application: Big Block Pontiac 455 stroker
  • Bore: 4.185 in
  • Stroke: 4.250 in
  • Rod length: 6.800 in
  • Compression height: 1.285 in
  • Pin diameter: 0.990 in
  • Crown volume: -6.4cc
  • Compression ratio: 12.0:1 (72cc chamber), 11.0:1 (80cc chamber), 10.6:1 (84cc chamber)
  • Alloy: 4032
  • Weight: 542 grams
  • Quantity: Set of 8

Shipping Height: 6.0

Shipping Length: 13.0

Shipping Width: 11.0

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