(3 customer reviews)

Summit Racing™ Pro LS 6.2L Rotating Assemblies SUM-R58400756

$2,540.87 $2,330.99
-8%

Description

Summit Racing™ Pro LS 6.2L Rotating Assemblies SUM-R58400756

Manufacturer’s Part Number: SUM-R58400756
Summit Racing Part Number: SUM-R58400756
Actual Engine Displacement: 6.8L/417
Rear Main Seal Style: 1-piece
Bore (in.): 4.075 in.
Bore (mm): 103.500mm
Engine Stroke (in.): 4.000 in.
Balanced: No
Piston Material: Forged aluminum
Piston Style: Dish, with two valve reliefs
Harmonic Balancer Included: No
Flexplate Included: No
Flywheel Included: No
Pistons Included: Yes
Piston Head Volume (cc): +6.00cc
Wrist Pin Style: Press-fit or floating
Piston Rings Included: Yes
Piston Ring Facing Material: Nitride
Piston and Ring Oversize (in.): 0.010 in.
Piston and Ring Oversize (mm): 0.25mm
Crankshaft Included: Yes
Crankshaft Material: Forged 4340 steel
Engine Balance: Internal
Connecting Rods Included: Yes
Connecting Rod Length Center to Center (in.): 6.125 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: No
Gaskets Included: No
Oil Pump Included: No
Camshaft Included: No
Lifters Included: No
Timing Chain and Gears Included: No
Plastigage Included: No
Assembly Lubricant Included: No
Quantity: Sold as a kit.
Notes: 6-bolt flange and standard snout for factory wet sump engines, except 1999-2000 thick flange LQ4. Optional thick tool steel pin upgrade recommended at 1,000 hp boosted or 300+ nitrous. 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 6.2L Rotating Assemblies ( Buy Summit Racing™ Pro LS 6.2L forged rotating assemblies )

Summit Racing™ Pro LS 6.2L 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.

Reviews (3)

3 reviews for Summit Racing™ Pro LS 6.2L Rotating Assemblies SUM-R58400756

  1. Noah jose

    Awesome product buy auto spare parts online!
    Received these today and installed them. They look amazing and very well built!! The package had a plastic tray which was nice as I soaked them in oil for a while then put them back in plastic tray when I installed so I wouldn’t drip oil everywhere. I’m super happy with these rockers so far!!!

  2. Theodore

    It’s was on time a easeto put together and it’s was just what I needed

  3. Barry Jack

    Has so much potential
    I wish this kit came out awsome… I had two issues. First my kit came two different different sized groove lock rings that support the oil rings, and BOTH were the wrong size and set me back two weeks.
    Second thing is idk who machined these pistons but the exhaust valve reliefs are a waste, they sit about 1/8 too low so the the exhaust valves do not benefit at all and just is wasted space.

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