Keith Black Pistons KB172-STD Fits SBC 377 400 Flat Top 7cc Bore 4.125

Fits SB Chevy, Bore 4.125, fits 377 Stroke 3.480 with Rod Length 5.700, fits 400 Stroke 3.750 with Rod Length 5.565, Flat Top 7cc, Set of 8 Pistons

$465.43

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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.

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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

5/64 x 5/64 x 3/16 rings not included

Compression Ratio 377 - 58cc 11.5:1, 62cc 10.9:1, 64cc 10.7:1, 76cc 9.4:1

Compression Ratio 400 - 58cc 12.3:1, 62cc 11.7:1, 64cc 11.4:1, 76cc 10.0:1

Advertised piston weight 591 grams, 145 gram wrist pin

OE Deck Height 9.025"

Note: Standard bore size is 4.125

Note: Centered Pin

Specifications

More Information
CNC Part Number	UEM-KB172-STD
Price	$465.43
Sold As	Set
Manufacturer's Part Number	KB172-STD
Brands	Keith Black
Part Types	Engine Piston
Departments	Parts
Vehicle Make	Chevy SB
Bore Size	4.125
Crankshaft Stroke	3.480, 3.750
Rod Length	5.565, 5.700
Piston Type	Flat Top
Compression Height	1.561
Piston Material	Hypereutectic
Piston Ring Size	5/64 5/64 3/16
Wrist Pin Size	0.927
Custom Notices	⚠ PROP 65 WARNING