#474128
KB Chevy 400 Hyperutectic Pistons, Flat Top, 6.0 Rod
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Keith Black1 Review
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Product Summary
400, Flat Top w/ 2 valve reliefs Piston Style
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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.
- 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).
Item Details
C/R 58cc=12.3, 64cc=11.64, 76cc=10.0Piston/Pin Weight: 475 g
Rod Length: 6.0", Ring Style: C
Charts
474-128 Instructions (PDF)
Ring Style Chart (GIF)
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
CARB Warning
For race/ off road use only
CARB Warning
For race/ off road use only
Specifications
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 | 3.750" |
Connecting Rod Length | 6.000" |
Piston Weight | 475 grams |
Piston Ring Style | C |
Wrist Pin Diameter | 0.9272" |
Wrist Pin Weight | 145 grams |
Compression 58cc = | 12.3 : 1 |
Compression 64cc = | 11.6 : 1 |
Compression 76cc = | 10.0 : 1 |
GTIN Code | Select Oversize to see |
Sold in Quantity | Set |