Engine Kits

Speed-Pro Hypereutectic Flat Top 4 Valve Reliefs Piston 4.125 x 3.750
Sealed Power Pistons

Speed-Pro Hypereutectic Flat Top 4 Valve Reliefs Piston 4.125 x 3.750



Part #: H400CP
List Price: $40.80
Our Price: $20.15
You Save: $20.65

Availability: In Stock

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400 BASED eng. (4.125 bore x 3.750 Stroke) 5.56" rod,  press pin, coated skirt. Pistons sold in sets of 8, price shown is each

Sealed Power® DD P™ Pistons
Sealed Power® Digital Diamond Profiled™ Pistons are perfect for engine builders looking for ways to build a cleaner-burning, longer-lasting vintage Chevy SB engine. This advanced piston technology lets rebuilders equip this popular engine with the ultimate in modern piston materials and engineering – while still keeping that classic engine “classic.” Sealed Power

DDP Pistons feature:

  • DDP™ Technology: Digital actuated diamond turning process produces precision skirt profiles.
  • Barrel profile: Creates an oil wedge between the skirt and cylinder wall.
  • Thermal Arching Compensation™ (TAC) Ring Groove Geometry: Machined uptilt offsets thermal “arching” distortion; squares the ring face to the cylinder.
  • Next generation DUROSHIELD® coating: Reduces friction and wear.
  • Precision-machined pin bores: Accommodate fixed or floating wrist pin installation.

Ring dimensions 5/64, 5/64, 3/16
Flat Top; 4 valve reliefs
Compression dist 1.560
Deck Clearance .025
Skirt Clearance .0015

Compression ratio by CYL head CC

Part
number

CID

58.0cc

64.cc

68.cc

72.cc

76.cc

H400CP

400

11.45

10.71

10.27

9.87

9.50

H400CP20

405

11.55

10.80

10.36

9.95

9.58

H400CP30

407

11.59

10.84

10.40

9.99

9.62

H400CP40

409

11.64

10.89

10.44

10.03

9.66

H400CP60

413

11.74

10.98

10.53

10.13

9.74

Required Options:
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