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Icon IC966.020 Forged Chevy 421 Flat Top Pistons, .020 Over, 6.0 Rod
Icon IC966.020 Forged Chevy 421 Flat Top Pistons, .020 Over, 6.0 Rod
400 Chevy Small Block V8, 421 Chevy Small Block V8, Flat Top w/ 2 valve reliefs Piston Style
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Icon IC966.020 Forged Chevy 421 Flat Top Pistons, .020 Over, 6.0 Rod
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Part # 474966-020
$599.99
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- It is fully machined with deep valve pockets
- Has dual forced pin oiling on most applications
- Features lateral gas porting on higher compression ratios
- Made entirely from high ductility 2618 alloy and weighs only 427 grams
- Includes second land accumulator grooves and op land mini groove technology
Details
Piston Style:
Flat Top w/ 2 valve reliefs
Piston Material:
Forged Aluminum
Piston Diameter:
4.145"
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
MFG. Part #:
IC966.020
GTIN Code:
800745194084
Sold in Quantity:
Set
Info
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.
For Chevy 421 c.i. (4.125" bore x 3.875" stroke). Use Style E rings (1.5mm, 1.5mm, 3.0mm).
- 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
Ring Style Chart (GIF)
Item Details
Piston Weight: 427 g. Rod Length: 6.0"Bore & Stroke: 4.125 x 3.875
Ring Style: E
Charts
474-966 Instructions (PDF)
Important Messages
- Get FREE shipping when your order includes this item and exceeds $99! Ground shipping only in the contiguous US.
Some parts are not legal for use in California or other states with similar laws/regulations
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Learn about the importance of getting the chain tension set correctly, and why it is critical that we get it as near perfect as we can. Walkthrough a basic procedure that effectively and consistently gets the chain tension set properly every time.