Keith Black Piston KB121-020 Fits SBC 383 Dish 28cc Bore 4.020

Fits SB Chevy 383, Bore 4.020, Stroke 3.750, Rod Length 5.700, Dish 28cc, 2 Valve Relief, Compression Height 1.433, Set of 8 Pistons

Special Price $435.11 Regular Price $441.74

Piston Options

KB121KTM Ring Set + $105.00

KB121KTD Ring Set + $110.00

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DROP SHIP

This product is a non-stocking item for CNC-Motorsports and will be shipped directly from the manufacturer / supplier.

⚠ PROP 65 WARNING

⚠ WARNING: This product can expose you to chemicals, which are known to the State of California to cause cancer. Please contact us to obtain a list of harmful chemicals. For more information, go to www.P65Warnings.ca.gov.

Description

Keith Black Hypereutectic pistons are a great choice for high performance marine, drag race, circle track, street or towing application builds. The low expansion 390 alloy with 16 percent silicon allows for a tighter piston to wall running clearance.

Fully machined head and valve reliefs

Triple Spiral Lock Rings

CNC machined pin bores produce straight and accurately sized bores

Accumulator Groove aids with compression ring seal

Machined in Oil Returns

Diamond Finished Skirts

Mini Grooves to reduce scuffing and overheating

Wrist pins and spiral lock included

1/16 x 1/16 x 3/16 rings not included

Compression Ratio 58cc 9.3:1, 62cc 9.0:1, 64cc 8.8:1, 76cc 8.0:1

Advertised piston weight 549 grams, 145 gram wrist pin

OE Deck Height 9.025"

Note: Standard bore size is 4.000

Note: Centered Pin. Made with SB Chevy 350

Specifications

More Information
CNC Part Number	UEM-KB121-020
Price	$441.74
Manufacturer's Part Number	KB121-020
Brands	Keith Black
Part Types	Engine Piston
Departments	Parts
Vehicle Make	Chevy SB
Bore Size	4.020
Crankshaft Stroke	3.750
Rod Length	5.700
Piston Type	Dish
Compression Height	1.433
Piston Material	Hypereutectic
Piston Ring Size	1/16 1/16 3/16
Wrist Pin Size	0.927