Keith Black Pistons KB123-STD Fits SBC 383 Dome 3.3cc Bore 4.000

Fits SB Chevy 383, Bore 4.000, Stroke 3.750, Rod Length 6.000, Dome 3.3cc, 2 Valve Relief, Compression Height 1.130, Set of 8 Pistons

Special Price $486.06 Regular Price $493.46

Piston Options

KB123KTM Ring Set + $105.00

KB123KTD Ring Set + $110.00

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⚠ 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 13.4:1, 62cc 12.7:1, 64cc 12.4:1, 76cc 10.7:1

Advertised piston weight 471 grams, 145 gram wrist pin

OE Deck Height 9.025"

Note: Standard bore size is 4.000

Note: Centered Pin. Spacer Ring Included. Made with SB Chevy 350

Specifications

More Information
CNC Part Number	UEM-KB123-STD
Price	$493.46
Manufacturer's Part Number	KB123-STD
Brands	Keith Black
Part Types	Engine Piston
Departments	Parts
Vehicle Make	Chevy SB
Bore Size	4.000
Crankshaft Stroke	3.750
Rod Length	6.000
Piston Type	Dome
Compression Height	1.130
Piston Material	Hypereutectic
Piston Ring Size	1/16 1/16 3/16
Wrist Pin Size	0.927
Custom Notices	⚠ PROP 65 WARNING