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#474123-030
$493.46
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$609.21
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Dome Piston Style, 4.030" Piston Diameter
| MFG. Part # | KB123.030 |
| Piston Style | Dome |
| Piston Material | Hypereutectic Aluminum |
| Wrist Pin Included | Yes |
| Wrist Pin Style | Press-Fit or Floating |
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855.313.9176Quick and Easy Returns
Return PolicyKeith 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 383 c.i. (4.000" bore x 3.75" stroke).
Charts
474-123 Instructions (PDF)
Ring Style Chart (GIF)
Specs
Guides & Documents
CA WARNING:
Can expose you to lead, a carcinogen and reproductive toxicant. See www.P65Warnings.ca.gov
| KEY SPECS | |
|---|---|
| MFG. Part # | KB123.030 |
| Brand | Keith Black |
| Piston Style | Dome |
| Piston Material | Hypereutectic Aluminum |
| Wrist Pin Included | Yes |
| Wrist Pin Style | Press-Fit or Floating |
| GENERAL | |
| Piston Diameter | 4.030" |
| Dome Height | .150" |
| Stroke | 3.750" |
| Connecting Rod Length | 6.000" |
| Piston Weight | 450 grams |
| Piston Ring Style | C |
| Wrist Pin Diameter | 0.9272" |
| Wrist Pin Weight | 145 grams |
| Top Ring Thickness | 1/16" |
| Second Ring Thickness | 1/16" |
| Oil Ring Thickness | 3/16" |
| Compression 58cc = | 13.4 : 1 |
| GTIN Code | 800745044341 |
| Sold in Quantity | Set |
1 Question • 1 Answer
Can you tell me the rings I need for these? My pistons are .40 over. Also what rod and main bearings to use with your 383 cast crank?
by Wesley
• 9 years ago
1 answer
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1 of 1 questions shown
