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$339.99
Keith Black KB125.030 Chevy 400 Hyperutectic Flat Top Pistons .030
Keith Black KB125.030 Chevy 400 Hyperutectic Flat Top Pistons .030
400 Chevy Small Block V8, Flat Top w/ 2 valve reliefs Piston Style, 3.750" Stroke
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Keith Black KB125.030 Chevy 400 Hyperutectic Flat Top Pistons .030
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Part # 474125-030
$339.99
$377.99
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- Features fully machined crowns and valve reliefs
- Has drilled oil drain backs and full floating wrist pins
- Use of reflective alloy allows 2% power increase
- Special quench dome technology minimizes deterioration
- Manufactured from 390 hypereutectic aluminum alloy
Details
Piston Style:
Flat Top w/ 2 valve reliefs
Piston Material:
Hypereutectic Aluminum
Piston Diameter:
4.150"
Stroke:
3.750"
Connecting Rod Length:
5.700"
Piston Weight:
564 grams
Piston Ring Style:
A
Wrist Pin Diameter:
0.9272"
Wrist Pin Weight:
145 grams
Compression 58cc =:
12.3 : 1
Compression 64cc =:
11.4 : 1
Compression 76cc =:
10.0 : 1
MFG. Part #:
KB125.030
GTIN Code:
800745044648
Sold in Quantity:
Set
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)
Item Details
C/R 58cc=12.3, 64cc=11.4, 76cc=10.0Piston/Pin Weight: 564 g
Rod Length: 5.7", Ring Style: A
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
Charts
474-125 Instructions (PDF)
Important Messages
- Get FREE shipping when your order includes this item and exceeds $99! Ground shipping only in the contiguous US.
Some parts are not legal for use in California or other states with similar laws/regulations
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Learn about the importance of getting the chain tension set correctly, and why it is critical that we get it as near perfect as we can. Walkthrough a basic procedure that effectively and consistently gets the chain tension set properly every time.