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#474172
KB Chevy 377/400 Hypereutectic Pistons, Flat Top, 5.7/5.565 Rod
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$314.99
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$370.49
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Product Summary
377, 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.
For Chevy 377 c.i. (4.125" bore x 3.48" stroke x 5.7" rod) and Chevy 400 c.i. (4.125" bore x 3.75" stroke x 5.565").
- 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
(377) C/R 58cc=11.5, 64cc=10.7, 76cc=9.4(400) C/R 58cc=12.3, 64cc=11.4, 76cc=10.1
Piston/Pin Weight: 580 g
Rod Length: 5.7(377), 5.565(400)
Ring Style: A
Charts
474-172 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
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 | |
| Speedway Motors Catalog Part # | 474-172 |
| Piston Diameter | Select Oversize to see |
| Stroke | 3.750" |
| Connecting Rod Length | 5.700" |
| Piston Weight | 580 grams |
| Piston Ring Style | A |
| Wrist Pin Diameter | 0.9272" |
| Wrist Pin Weight | 145 grams |
| Compression 58cc = | 11.5 : 1 |
| Compression 64cc = | 10.7 : 1 |
| Compression 76cc = | 9.4 : 1 |
| GTIN Code | Select Oversize to see |
| Sold in Quantity | Set |