-18%

KB Chevy 350 Hypereutectic Pistons, Flat Top, 5.7 Rod

-18%

KB Chevy 350 Hypereutectic Pistons, Flat Top, 5.7 Rod
Keith Black

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#474120

KB Chevy 350 Hypereutectic Pistons, Flat Top, 5.7 Rod

  • Will fit the S/B Chevy 350 c.i. (4.000" bore x 3.48" stroke) engine
  • These pistons are favored for their improved power and reduced scuffing
  • Manufactured from 390 Hypereutectic alloy and have fully machined crowns and valve reliefs
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Oversize:

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$417.60

/set

In Stock

$515.55

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Product Summary

Flat Top w/ 2 valve reliefs Piston Style, 3.480" Stroke

  • Will fit the S/B Chevy 350 c.i. (4.000" bore x 3.48" stroke) engine
  • These pistons are favored for their improved power and reduced scuffing
  • Manufactured from 390 Hypereutectic alloy and have fully machined crowns and valve reliefs
  • The unique design & manufacturing processes combine to produce a rigid piston, which will rock less in the bore improving ring seal
  • Pistons are heat treated and offer reduced thermal expansion, which allows you to run tighter clearances and allows the piston rings to seal better and minimize blow-by
See more details

Key Specs

MFG. Part #Select Oversize
Piston StyleFlat Top w/ 2 valve reliefs
Piston MaterialHypereutectic Aluminum
Wrist Pin IncludedYes
Wrist Pin StylePress-Fit or Floating
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Details

Keith Black Hypereutectic pistons are favored for their improved power and reduced scuffing. The unique design & manufacturing processes combine to produce a rigid piston, which will rock less in the bore improving ring seal. These T-5 heat treated pistons also offer reduced thermal expansion, which allows you to run tighter clearances and allows the piston rings to seal better and minimize blow-by.

For S/B Chevy 350 c.i. (4.000" bore x 3.48" stroke).

  • 390 Hypereutectic alloy
  • Fully machined crowns and valve reliefs
  • Drilled oil drain backs
  • Full floating wrist pins
  • Triple wound spiral locks
  • Reflective alloy allows 2% power increase
  • Quench dome technology minimizes deterioration
  • Zero deck quench designs
  • Lightweight wrist pins

Item Details

C/R 58cc=10.9, 64cc=10.2, 76cc=8.9
Piston/Pin Weight: 680 g
Rod Length: 5.7", Ring Style: A

Charts

Specs

  • Comp Height 5.7" Rod -  1.561
  • Comp Height 6.0" Rod -  1.261
  • Pin Diameter -  0.9272

CARB Warning

For race/ off road use only

Emissions warning: this part only legal for sale or use in California for racing (competition) vehicles which may never be used, registered, or licensed for use upon a public highway. Any other use renders the vehicle tampered and not legal for use on California public highways (any public street or roadway, public dirt road, public park, or publicly maintained right of way open to the use of the public for vehicular travel). Violations subject to $37,500 penalty per violation per vehicle, revocation of registration, loss of use on California public right of ways, and proof of correction for tampering. There are similar restrictions and penalties under federal law and the laws of all other states with penalties under federal law of up to approximately $45,268 per tampered vehicle and/or engine.
CA Prop 65
CARB warning

Specifications

KEY SPECS
MFG. Part #Select Oversize to see
BrandKeith Black
Piston StyleFlat Top w/ 2 valve reliefs
Piston MaterialHypereutectic Aluminum
Wrist Pin IncludedYes
Wrist Pin StylePress-Fit or Floating
GENERAL
Piston DiameterSelect Oversize to see
Stroke3.480"
Connecting Rod Length5.700"
Piston Weight535 grams
Piston Ring StyleA
Wrist Pin Diameter0.9272"
Wrist Pin Weight145 grams
Top Ring Thickness5/64"
Second Ring Thickness5/64"
Oil Ring Thickness3/16"
Compression 58cc =10.9 : 1
Compression 64cc =10.2 : 1
Compression 76cc =8.9 : 1
GTIN CodeSelect Oversize to see
Sold in QuantitySet

Ratings & Reviews

4.7

3 Reviews

Overall Assessment

Customers commend this product as a high-value item appreciated most notably for its practicality in racing motors. The superior quality of the materials used and the outstanding performance of these pistons is repeatedly emphasized, setting them above competitors. Product's robustness and reliability make it a favorite choice among enthusiasts.

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4.7

3 reviews

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I would buy again

5.0

2 years ago

Mark

Temecula

Verified

Great

Great product

5.0

3 years ago

Clustertruck

Arkansas

Verified

Awesome pistons great value

good piston

4.0

14 years ago

redneck

danielson ct

i use the piston in my raceing motors

Would Recommend

Showing 3 of 3 reviews

Questions & Answers

5 Questions • 5 Answers

Do these come with rings? If not would there be a recommended ring package to get?

by Jewbus

• 3 months ago

1 answer

View Answer

What is the hp,rpm, and compression ratio limit for these pistons?

by Chase Busch

• 7 years ago

1 answer

View Answer

You show them at 10.2:1 with a 64 cc head. Is that measured with a head gasket? And what thickness?

by James

• 8 years ago

1 answer

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What is the difference between these flat top and comparable KB claimer flat top pistons?

by rayfin

• 9 years ago

1 answer

View Answer

What cc are the valve cut-outs?

by Rowdy

• 13 years ago

1 answer

View Answer

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