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$429.99

$365.99

KB Chevy 400 Hyperutectic Pistons, Flat Top, 6.0 Rod

400 Chevy Small Block V8, Hypereutectic Aluminum Piston Material, 6.000" Connecting Rod Length

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Part # 474128

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030 040

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Piston Material:

Hypereutectic Aluminum

Piston Style:

Flat Top w/ 2 valve reliefs

Piston Diameter:

Select Oversize to see

Connecting Rod Length:

6.000"

Piston Ring Style:

Stroke:

3.75"

Wrist Pin Diameter:

.9272"

Piston Weight:

475 grams

Wrist Pin Weight:

145 grams

Compression 58cc =:

12.3 : 1

Compression 64cc =:

11.6 : 1

Compression 76cc =:

10.0 : 1

Sold in Quantity:

Set

MFG. Part #:

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GTIN Code:

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Info

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.

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

For Chevy 400 c.i. (4.125" bore x 3.75" stroke).

Ring Style Chart (GIF)

474-128 Instructions (PDF)

Item Details

C/R 58cc=12.3, 64cc=11.64, 76cc=10.0
Piston/Pin Weight: 475 g
Rod Length: 6.0", Ring Style: C

Specs

Comp Height 5.565" Rod - 1.561
Comp Height 5.7" Rod - 1.433
Comp Height 6.0" Rod - 1.13
Pin Diameter - 0.9272

Some parts are not legal for use in California or other states with similar laws/regulations

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KB Chevy 400 Hyperutectic Pistons, Flat Top, 6.0 Rod

400 Chevy Small Block V8, Hypereutectic Aluminum Piston Material, 6.000" Connecting Rod Length

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