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 521 - 76cc 11.0:1, 82cc 10.5:1, 91cc 9.8:1, 97cc 9.4:1 / 545 - 76cc 11.5:1, 82cc 10.9:1, 91cc 10.2:1, 97cc 9.8:1
Advertised piston weight 606 grams, 158 gram wrist pin
OE Deck Height 10.320"
Note: Standard bore size is 4.360
Note: Centered Pin. Includes spacer ring. Made from Ford 460 block. Check rod side clearance

Guides & Documents

Installation Instructions (Keith Black)

CARB Warning

For race/ off road use or for use on pre-1966 vehicles.

Emissions warning: this part only legal for sale or use in California for racing (competition) vehicles which may never be used, registered, or licensed for use upon a public highway, or if installed in vehicles model-year 1965 or older; motorcycles model-year 1977 or older; or off-highway recreational vehicles (such as off-road motorcycles and all-terrain vehicles) model-year 1996 and older. Any other use renders the vehicle tampered and not legal for use on California public highways (any public street or roadway, public dirt road, public park, or publicly maintained right of way open to the use of the public for vehicular travel). Violations subject to $37,500 penalty per violation per vehicle, revocation of registration, loss of use on California public right of ways, and proof of correction for tampering. There are similar restrictions and penalties under federal law and the laws of all other states with penalties under federal law of up to approximately $45,268 per tampered vehicle and/or engine.

CA WARNING:

Can expose you to lead, a carcinogen and reproductive toxicant. See www.P65Warnings.ca.gov

CARB warning

Specifications

KEY SPECS
MFG. Part #	Select Oversize to see
Brand	Keith Black
Piston Style	Dish
Piston Material	Hypereutectic Aluminum
Wrist Pin Included	Yes
Wrist Pin Style	Press-Fit or Floating

GENERAL
Piston Diameter	Select Oversize to see
Piston Ring Style	C
Top Ring Thickness	1/16"
Second Ring Thickness	1/16"
Oil Ring Thickness	3/16"
GTIN Code	Select Oversize to see
Sold in Quantity	Set

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Questions & Answers

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Can I get a set of these piston in std

by Richard

• 10 years ago

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