-18%

KB Chevy 350 Hypereutectic Pistons, Flat Top, 5.7 Rod

-18%

#474120

KB Chevy 350 Hypereutectic Pistons, Flat Top, 5.7 Rod

Name: KB Chevy 350 Hypereutectic Pistons, Flat Top, 5.7 Rod
Brand: Keith Black
SKU: 474120
Rating: 4.7 (3 reviews)

3 Reviews

5 Questions

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

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

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Key Specs

MFG. Part #	Select Oversize
Piston Style	Flat Top w/ 2 valve reliefs
Piston Material	Hypereutectic Aluminum
Wrist Pin Included	Yes
Wrist Pin Style	Press-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

474-120 Instructions (PDF)

Ring Style Chart (GIF)

Specs

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

Guides & Documents

Pistons Installation Instructions (474120)

Pistons Technical Information (474120)

Installation Instructions (Keith Black)

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 WARNING:

Can expose you to lead, a carcinogen and reproductive toxicant. See www.P65Warnings.ca.gov

CARB warning

Specifications

KEY SPECS
MFG. Part #	Select Oversize to see
Brand	Keith Black
Piston Style	Flat Top w/ 2 valve reliefs
Piston Material	Hypereutectic Aluminum
Wrist Pin Included	Yes
Wrist Pin Style	Press-Fit or Floating

GENERAL
Piston Diameter	Select Oversize to see
Stroke	3.480"
Connecting Rod Length	5.700"
Piston Weight	535 grams
Piston Ring Style	A
Wrist Pin Diameter	0.9272"
Wrist Pin Weight	145 grams
Top Ring Thickness	5/64"
Second Ring Thickness	5/64"
Oil Ring Thickness	3/16"
Compression 58cc =	10.9 : 1
Compression 64cc =	10.2 : 1
Compression 76cc =	8.9 : 1
GTIN Code	Select Oversize to see
Sold in Quantity	Set

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

Sort Questions

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

by Jewbus

• 4 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

• 14 years ago

1 answer

View Answer

5 of 5 questions shown