Compstar LSX LS 388 399 Balanced Rotating Assembly, 12.5:1 JE Pistons

LS7 LSX 388 389 393 399 Rotating Assembly, Compstar Forged Steel Crankshaft 3.625 Stroke, 6.125 H-Beam Rods, +8.4cc Dome JE Pistons, HP Piston Rings, H Bearings, Balanced Assembly, Valve Pocket Fits 15 Degree

Special Price $3,709.95 Regular Price $3,749.95

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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

Callies Compstar LSX rotating assembly kits offer quality and reliability you can count on. Featuring fully counterweighted forged crankshafts, H beam connecting rods with ARP2000 rod bolts, 2618 forged pistons, these kits are designed to make horsepower. Rated to support up to 1250 horsepower engine builds. Kit option upgrades are recommended for extreme engine builds. Higher horsepower applications please contact us for other kit options.

Compstar 4340 forged steel crankshaft 3.625 stroke, 8 Counterweight (short snout / wet sump)

Compstar forged 4340 steel H-Beam rods with 7/16" ARP 2000 rod bolts, 6.125 length

JE Ultra Series 2618 forged pistons, .150 wall wrist pins, Round wire locks, Coated Skirts, 1.304 C/H (*Valve Pocket fit 15 degree LS Heads)

JE Pro Seal Rings. 1.2mm Gas nitrided steel top ring, 1.5mm Napier second ring, with 3.0mm oil rings for power adders

Performance H series rod and main bearings

This Rotating assembly kit has been Internally Balanced In-house by CNC-Motorsports

Compression Ratio with 64cc heads 13.2:1

Compression Ratio with 68cc heads 12.5:1

Compression Ratio with 70cc heads 12.2:1

Specifications

More Information
CNC Part Number	CS-7064-JE
Price	$3,749.95
Manufacturer's Part Number	CS-7064-JE
Brands	Callies, Compstar, JE
Part Types	Engine Rotating Assembly Kit
Departments	Parts
Vehicle Make	Chevy LS
Balanced Assembly	Yes
Balance Type	Internal
Crankshaft Material	4340 Forged Steel
Crankshaft Stroke	3.625
Piston Brand	JE
Piston Type	Dome
Rod Length	6.125
Piston Material	2618 Forged
Custom Notices	⚠ PROP 65 WARNING

Compstar LSX LS 388 399 Balanced Rotating Assembly, 12.5:1 JE Pistons

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