Callies Compstar LS 5.3L rotating assembly kits offer quality and reliability you can count on. Featuring fully counterweighted forged crankshafts, H beam connecting rods with ARP2000 rod bolts, forged pistons, these kits are designed to make horsepower. Rated to support up to 1300 horsepower engine builds. Kit option upgrades are recommended for extreme engine builds. Higher horsepower applications please contact us for other kit options. Kit will Fit GEN III 4.8L LR4, GEN IV 4.8L LY2 L20, GEN III 5.3L Vortec 5300, or LM7 L59 LM4,

Callies Compstar 4340 forged steel crankshaft, 4.000 Stroke, 8 Counterweight

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

Mahle Powerpak 4032 forged pistons, .168 wall wrist pins (*Fits 15 degree LS Heads*)

Grafal Anti-friction skirt coating, Phoshate coated piston to reduce Micro-welding

Mahle low drag pistons ring set. 1.0mm steel top ring, 1.0mm napier second ring, 2.0mm oil rings for power adders

High performance H series main bearings and rod bearings

This Rotating assembly kit has been Internally balanced in-house by CNC-Motorsports

Compression Ratio with 62cc head 11.7:1

Compression Ratio with 65cc head 11.2:1

Compression ratio calculated at zero deck and .040" gasket

Specifications

More Information
CNC Part Number	CS-5366-M
Price	$3,424.95
Sold As	Kit
Manufacturer's Part Number	CS-5366-M
Brands	Callies, Compstar
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	4.000
Piston Brand	Mahle
Piston Type	Dome
Rod Length	6.125
Piston Material	Forged
Custom Notices	⚠ PROP 65 WARNING

Compstar LS 5.3L 363 Balanced Rotating Assembly, 11.2:1 Mahle Pistons