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Speed Pro · H521ACP 40

Part #: H521ACP 40
UPC: 614046686274

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Description: Cast Piston Set; Speed Pro H521ACP 40 Engine Piston Set

Description:

Description

Speed-Pro(R) delivers the power you need and the value & quality that you deserve. Whether you are running at the track, chasing trophies on the strip, or just cruising down the road, count on Speed-Pro(R) to provide the best value in HP engine components.

Features & benefits

  • Exclusive higher-strength FM-425 alloy with 16.5 percent silicon finely dispersed throughout the material
  • Sophisticated "barrel" profiles help optimize oil wedge between skirt and wall.
  • Piston skirts protected by next-gen DUROSHIELD(R) coating.
  • TACTM ring groove geometry
  • Weight matched to +/- 2 grams.
  • Machined valve reliefs and circlip grooves; LR-63 lock rings for floated applications

Application summary

Year Make / model
1979-1980 Buick Century
1978-1980 Buick LeSabre
1978-1987 Buick Regal
1979-1985 Buick Riviera
1980-1981 Chevrolet Monte Carlo

Specifications

GTIN
00614046686274
Weight
7.14 lb
Height
4.54 in
Length
14.92 in
Width
9.31 in
EO
Legal US
Life cycle
Available to Order
AAM brand code
SPP
Warehouse brand code
BHVW
AAIA brand code
BHVW

Attributes

Bore (Inch)
3.840
Compression Distance
1.800
Dome Volume CC
-24.0
Groove 1 Qty
2
Groove 1 Width
5/64
Groove 2 Qty
1
Groove 2 Width
3/16
Head Illustration
28
Head Type
.255 dish; DUROSHIELD skirt coated piston
Lock Ring
N/R
Minimum Clearance
.0015
Oversize Inch
.040
Part Description
Engine Piston
Part Material
Hypereutectic
Pin Diameter (Inch)
0.939
Pin Type
P
Pin Weight Gram
156
Weight W Pin Gram
682
Weight w/o Pin Gram
526

Fitment status

Select a vehicle or engine to see whether this part applies to your application.

Application summary

1979-1980 Buick Century; 1978-1980 Buick LeSabre; 1978-1987 Buick Regal; 1979-1985 Buick Riviera; 1980-1981 Chevrolet Monte Carlo