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$101 Off
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#474122
$429.14
/set
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$529.80
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Flat Top w/ 2 valve reliefs Piston Style, 3.750" Stroke
| 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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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
474-122 Instructions (PDF)
Ring Style Chart (GIF)
Specs
Guides & Documents
For race/ off road use or for use on pre-1966 vehicles.
CA WARNING:
Can expose you to lead, a carcinogen and reproductive toxicant. See www.P65Warnings.ca.gov
| 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 | 425 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 = | 11.9 : 1 |
| Compression 64cc = | 10.9 : 1 |
| Compression 76cc = | 9.6 : 1 |
| GTIN Code | Select Oversize to see |
| Sold in Quantity | Set |
4.5
2 Reviews
Customers appreciate our product for its excellent fit and practicality, specially for mildly built and street-driven engines. Notably, they confirm its superior quality to competitor offerings, underscoring its solid projection for engines that don't demand forged pistons. High usability and consistent performance are among highlighted features.
4.5
2 reviews
5
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4
1
3
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5.0
5 years ago
Yoyo
Texas
Verified
Great fit for my 383 stroker
Would Recommend
Good pistons for mild builds
4.0
7 years ago
Eric
NE
Verified
I like these for mild engines, especial street driven engines that don't require forged pistons.
Would Recommend
Showing 2 of 2 reviews
2 Questions • 2 Answers
Do these pistons come with rings and pins
by Dave
• a year ago
1 answer
View Answer
What is the dish volume of the valve reliefs?
by Jamie
• 7 years ago
1 answer
View Answer
2 of 2 questions shown
