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$204 Off
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#474965
Icon Chevy 421 Forged Pistons, .218 Dome, 6.0 Rod
- Specifically designed for the Chevy 421 c.i. engine with a 4.125" bore and 3.875" stroke
- Features lateral gas porting on higher compression ratios
- Made from high ductility 2618 aluminum alloy with a natural finish
$869.62
/set
In Stock
$1,073.61
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Product Summary
Dome Piston Style, Forged Aluminum Piston Material
- Specifically designed for the Chevy 421 c.i. engine with a 4.125" bore and 3.875" stroke
- Features lateral gas porting on higher compression ratios
- Made from high ductility 2618 aluminum alloy with a natural finish
- Available in standard or several oversize dimensions to better match your application
- Piston weighs only 427 grams and the wrist pin weighs 102 grams
Key Specs
| MFG. Part # | Select Oversize |
| Piston Style | Dome |
| Piston Material | Forged Aluminum |
| Wrist Pin Included | Yes |
| Wrist Pin Style | Press-Fit or Floating |
Need To Know
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Details
Formerly KB Forged Pistons. Starting with 2618 alloy heat treated to high strength T-6 specifications, these give you the best value for your money. Exclusive V-rib adds strength without adding weight but allows maximum cooling.
- High ductility 2618 alloy
- Dual forced pin oiling on most applications
- Lateral gas porting on higher compression ratios
- Fully machined with deep valve pockets
- Second land accumulator grooves
- Top land mini groove technology
- Diamond finished skirts
- Triple wound spiral locks
For Chevy 421 c.i. (4.125" bore x 3.875" stroke). Use Style E rings (1.5mm, 1.5mm, 3.0mm).
Item Details
Piston Weight: 427 g. Rod Length: 6.0"Bore & Stroke: 4.125 x 3.875
Ring Style: E
Charts
474-965 Instructions (PDF)
Ring Style Chart (GIF)
CARB Warning
For race/ off road use or for use on pre-1966 vehicles.
CARB Warning
For race/ off road use or for use on pre-1966 vehicles.
Specifications
Specifications
| KEY SPECS | |
|---|---|
| MFG. Part # | Select Oversize to see |
| Brand | Icon Pistons |
| Garage Sale Type | Discontinued |
| Piston Style | Dome |
| Piston Material | Forged Aluminum |
| Wrist Pin Included | Yes |
| Wrist Pin Style | Press-Fit or Floating |
| GENERAL | |
| Piston Diameter | Select Oversize to see |
| Dome Height | .218" |
| Stroke | 3.875" |
| Connecting Rod Length | 6.000" |
| Piston Weight | 427 grams |
| Piston Ring Style | E |
| Wrist Pin Diameter | 0.9270" |
| Wrist Pin Weight | 102 grams |
| Top Ring Thickness | 1.5 mm |
| Second Ring Thickness | 1.5 mm |
| Oil Ring Thickness | 3.0 mm |
| GTIN Code | Select Oversize to see |
| Sold in Quantity | Set |
Ratings & Reviews
Ratings & Reviews
Questions & Answers
Questions & Answers
3 Questions • 3 Answers
Will these work on 18 degree heads or 23 degree only
by DD
• 4 years ago
1 answer
View Answer
Can u use a dart iron eagle 49 cc head with these pistons?
by Danny
• 9 years ago
1 answer
View Answer
what is the compression ratio with 64cc heads
by wrichard1986
• 11 years ago
1 answer
View Answer
3 of 3 questions shown

