Summit Racing™ Pro LS 5.3L Rotating Assemblies SUM-R58367852

Name: Summit Racing™ Pro LS 5.3L Rotating Assemblies
Brand: Summit Racing
SKU: SUM-R58367852
Price: 2792.87 USD
Availability: OutOfStock
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Part Number: SUM-R58367852

$2,792.87

Summit Racing™ Pro LS 5.3L Rotating Assemblies

Pro LS Rotating Assembly, 326 Cid, 3.785 bore, Standard 3.622 stroke, 58x, 6.098 rod, 2cc dome, 10.9:1 @ 61cc, 10.4:1 @ 65cc, File-Fit Ring, H Bearing
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Summit Racing™ Pro LS 5.3L Rotating Assemblies SUM-R58367852

SUM-R58367852

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Part Number: SUM-R58367852

Estimated Ship Date: May 18, 2026

$2,792.87

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Overview

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Kit/Combo Contents

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Estimated Ship Date: May 18, 2026 Would you rather pick it up?

Overview

Brand:

Summit Racing

Manufacturer's Part Number:

SUM-R58367852

Part Type:

Engine Rotating Kits

Product Line:

Summit Racing™ Pro LS 5.3L Rotating Assemblies

Summit Racing Part Number:

SUM-R58367852

Actual Engine Displacement:

5.3L/326

Rear Main Seal Style:

1-piece

Bore (in.):

3.785 in.

Bore (mm):

96.140mm

Engine Stroke (in.):

3.622 in.

Balanced:

Piston Material:

Forged aluminum

Piston Style:

Dome, with two valve reliefs

Harmonic Balancer Included:

Flexplate Included:

Flywheel Included:

Pistons Included:

Yes

Piston Head Volume (cc):

-2.00cc

Wrist Pin Style:

Press-fit or floating

Piston Rings Included:

Yes

Piston Ring Facing Material:

Plasmamoly

Piston and Ring Oversize (in.):

0.005 in.

Piston and Ring Oversize (mm):

0.130mm

Crankshaft Included:

Yes

Crankshaft Material:

Forged 4340 steel

Engine Balance:

Internal

Connecting Rods Included:

Yes

Connecting Rod Length Center to Center (in.):

6.098 in.

Connecting Rod Material:

Forged 4340 steel

Connecting Rod Beam Style:

H-beam

Rod Bearings Included:

Yes

Rod Bearing Undersize (in.):

Stock

Rod Bearing Undersize (mm):

Stock

Main Bearings Included:

Yes

Main Bearing Undersize (in.):

Stock

Main Bearing Undersize (mm):

Stock

Cam Bearings Included:

Gaskets Included:

Oil Pump Included:

Camshaft Included:

Lifters Included:

Timing Chain and Gears Included:

Plastigage Included:

Assembly Lubricant Included:

Quantity:

Sold as a kit.

Notes:

6-bolt flange and standard snout for factory wet sump engines, except 1999-2000 thick flange LQ4. Dual 3/16 keyway, Woodruff key not included, re-use factory or use NAL-12561513 rear and add SUM-161000 front for blower balancers. Always clean with mineral spirits and brake-clean oil gallery with 1/4 in. engine brush PIO-4501.

Summit Racing™ Pro LS 5.3L Rotating Assemblies

Summit Racing™ Pro LS 5.3L forged rotating assemblies provide industry-leading fit, finish, and durability at an affordable price. These kits are tested to over 1,200 hp in turbo applications. They're available in a wide range of fitment and performance options.

Standard features and specs may include:

* 4340 forged steel crank
* Core hardened to optimum strength, tempered, and nitride hardened
* Lightening rod journals, gun-drilled mains, and profiled counterweights for better engine acceleration
* Maximum journal tolerances of +/- .0001 to ensure consistent bearing clearance
* Straight-shot oiling for maximum oil film strength at the maximum load angle
* 4340 forged H-beam connecting rods
* Designed for 5,000 ft./min. average piston speed in street and drag applications
* 7/16 ARP 2000 rod bolts with 200,000 psi tensile strength; dual ribbed caps for maximum strength
* Added stroker clearance and balanced to within +/- 1 gram per end
* Full-floating and precision-honed in the USA to +/- .0001 in.
* 2618 forged aluminum pistons
* Ultra-modern 2618 alloy forgings for boost and nitrous with maximum ring land thickness
* Pressure-fed pin oiling with durable chromium steel wrist pins
* Specially profiled and coated piston skirts for stroker applications with tight piston-to-wall clearance
* Generous valve reliefs for extra piston-to-valve clearance accommodate cathedral and rectangle heads
* Premium steel piston rings
* Steel top rings designed for maximum life with boost and nitrous
* File-fit rings for maximum ring seal, reduced friction, and tensions optimized for wet sump engines
* Martensitic ductile Napier-hook second rings for strength and maximum oil control
* Premium main and rod bearings
* Clevite H-bearings are designed for high-rpm operation in racing applications
* Tri-metal bearings designed with high bearing crush for maximum retention
* Medium eccentricity shells with precision wall tolerance of +/- .00015 in.