BBC 4.280″ PISTONS -3cc FLAT 4.000″ ST 6.135″ ROD 1.640″ CH

Description

These big block pistons
are compatible with forced
induction, nitrous (Except
1.120 compression height) and
angle milled heads. Valve
reliefs will accommodate
oversized valves and long
duration, tight lobe
separation cams. Precision
CNC machined ring grooves
accept 1/16, 1/16, 3/16
rings. Will fit both open and
closed chamber cylinder
heads.

Includes:

• Pin
  #990-2930-15-51S(150g) –
  1.120″ Compression height
• Pin
  #990-2930-18-51S(174g) –
  1.245″ Compression height and
  above
• Double spiro
  locks #990-042-CS

Specifications
:

• Part #: J257980
• CID:
  460
• Bore: 4.280
• Stroke: 4.000
• Rod Length: 6.135
• Block Height: 9.780
• Compression Height: 1.640
• Compression Ratio with
  110cc chamber volume: 8.7
• Compression Ratio with
  118cc chamber volume: 8.2
• Compression Ratio with
  124cc chamber volume: 7.9
• Dome Volume: -3.0cc
• Gram Weight: 618
• Oversize: .030
• Recommended Ring Set (Check
  Proseal listing to determine
  oil ring tension):
  J100F8-4280-5

With over 60 years of
experience, JE Pistons is the
leader in high performance
forged pistons. We’ve built a
reputation that the
competition can only follow.
JE has a history of
manufacturing the highest
quality pistons and
components that professional
engine builders, race teams,
and high performance
enthusiasts trust and rely
on.

The top engine
builders in NASCAR, ALMS,
NHRA, AMA Supercross and
others choose JE Pistons over
any other brand. For over 60
years, JE’s position at the
forefront of performance
piston manufacturing has been
a result of continuous
research and development of
unique materials, piston
designs and technologies.
Utilising State-Of-The-Art
CNC machines for
manufacturing along with
purpose-designed forgings, JE
is ableto maintain exacting
specifications on each and
every piston and hold
tolerances to millionths of
an inch. Also available from
JE is industry-leading
processes like Ultra Crown, a
Digital Three Dimensional
piston crown machining
process and Finite Element
Analysis (FEA). FEA is a
computer process whereby
stress and fatigue are tested
on a computer model before it
goes into production. JE is
the only performance piston
manufacturer to earn the
QS-9000 quality standard
which confirms that JE
provides customers the
highest standards in quality
control. In addition, we also
have State-Of-The-Art
inspection equipment and
testing equipment which
enables us to constantly
bring you, the customer, the
very latest in piston design
configurations.