Keith Black Pistons KB163-020 Fits BBF 427 FE Flat Top 5.5cc Bore 4.254

Fits BB Ford 427 FE, Bore 4.254 Stroke 3.780, Rod Length 6.490, Flat Top 5.5cc, 2 Valve Reliefs, Compression Height 1.775, Set of 8 Pistons

Special Price $528.59 Regular Price $536.64

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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

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

Compression Ratio 61cc 12.7:1, 70cc 11.4:1, 74cc 11.0:1

Advertised piston weight 724 grams, 143 gram wrist pin

OE Deck Height 10.170"

Note: Standard bore size is 4.234

Note: Centered Pin. Narrow small end of the rod to 1" width

Specifications

More Information
CNC Part Number	UEM-KB163-020
Price	$536.64
Manufacturer's Part Number	KB163-020
Brands	Keith Black
Part Types	Engine Piston
Departments	Parts
Vehicle Make	Ford BB
Bore Size	4.254
Crankshaft Stroke	3.780
Rod Length	6.490
Piston Type	Flat Top
Compression Height	1.775
Piston Material	Hypereutectic
Piston Ring Size	5/64 5/64 3/16
Wrist Pin Size	0.975
Custom Notices	⚠ PROP 65 WARNING