Hawks Motorsports is pleased to offer our clients the 134-3610 2004-2020 GM Gen III/IV LS 5.3L 6.0L 6.2L Head Bolt Kit, ARP. This ARP cylinder head bolt kit is designed for later GM LS applications using the second-design, all-same-length head-bolt configuration. The kit features 8740 chromoly construction, black oxide finish, hex heads and hardened washers.

If you're putting together an LS engine and have the heads sitting on the bench, this is the kind of hardware you want to have sorted before the final assembly starts. ARP's 134-3610 gives the builder a complete set of performance-oriented head bolts for the later LS configuration, with the proper fastener sizes and hardened washers for consistent clamping during assembly.

ARP identifies 134-3610 for Chevrolet Gen III LS applications from 2004 and later, while current application information also covers later Gen IV LS engines. The critical point is the head-bolt configuration, not simply the model year of the vehicle. This kit is intended for engines using the later all-same-length arrangement and does not fit LS9 applications.

KEY FEATURES

• ARP Part Number: 134-3610
• Brand: ARP
• Cylinder head bolt kit for later GM LS applications
• Designed for the second-design/all-same-length head-bolt configuration
• 8740 chromoly steel construction
• Heat-treated construction
• Black oxide finish
• Hex-head design
• Hardened, parallel-ground washers included
• M11 x 2.0 primary head-bolt thread
• Additional M8 x 1.25 fasteners for the smaller head-bolt locations
• 10mm and 13mm hex socket sizes
• Complete kit for both cylinder heads
• Intended for performance and engine-building applications

PRODUCT SPECIFICATIONS

ARP's installation documentation specifies the 134-3610 application as Chevy Gen III LS Series, 2004 and later, 8740, and identifies 13mm and 10mm sockets. JEGS lists the kit as 8740 chromoly, black oxide, hex-head, with washers included and a 4.75-lb shipping weight.

VEHICLE FITMENT / FITS THE FOLLOWING MODELS

This is an engine-specific fastener kit. Verify the actual engine block and head-bolt configuration before ordering.

Verified Engine Applications

• 5.3L LS
• 6.0L LS
• 6.2L LS
• Applicable Gen III and Gen IV LS engines from 2004 and later
• Applicable LS1/LS6 applications using the later head-bolt configuration
• Applicable LQ4/LQ9 applications using the later configuration
• Other GM LS engines using the same all-same-length head-bolt arrangement

Current application sources identify 134-3610 for 2004-and-later Gen III LS engines and later Gen IV applications. Current listings specifically identify 5.3L, 6.0L and 6.2L applications, while some application catalogs also list 4.8L, 5.7L and 7.0L LS applications when the correct head-bolt configuration is present.

Common Vehicle Applications

Depending on the specific engine and configuration, this style of LS head bolt kit can be found in applications including:

• Chevrolet Camaro
• Chevrolet Corvette
• Chevrolet Silverado
• Chevrolet Express
• Cadillac CTS/CTS-V
• Pontiac GTO
• Other GM vehicles equipped with applicable LS engines

Vehicle year alone should not be used as the final fitment determination. Engine swaps and mid-year configuration changes can result in an engine having a different head-bolt arrangement than the original vehicle application.

IMPORTANT APPLICATION NOTES AND EXCLUSIONS

• Designed for 2004-and-later GM Gen III/Gen IV LS applications using the later head-bolt configuration.
• The important fitment characteristic is the all-same-length/second-design configuration.
• Earlier LS blocks using the original unequal-length head-bolt arrangement require a different kit.
• Does not fit LS9 applications.
• Do not select this kit solely from the vehicle model year.
• Verify the actual block configuration when working with an engine swap, replacement block or mixed-generation LS build.
• The kit is a head bolt kit, not a head stud kit.
• 134-3610 should not be confused with the earlier-design 134-3609 head bolt kit.

INSTALLATION NOTES

• Inspect all fasteners before installation.
• Clean all block threads thoroughly and remove old sealer, lubricant and debris.
• Chase the block threads if necessary to ensure proper thread engagement and accurate torque readings.
• Clean the cylinder-head spot faces where the washers seat.
• Washer and cylinder-head mating surfaces should remain clean and dry.
• Install the washers with the chamfer oriented correctly toward the bolt head.
• Apply ARP Ultra-Torque Fastener Assembly Lubricant to the bolt threads and underside of the bolt heads as directed by ARP.
• Follow the manufacturer's recommended cylinder-head tightening sequence.
• ARP's instructions specify a staged torque procedure of 25 ft-lbs, 50 ft-lbs and 80 ft-lbs for the primary 11mm bolts, followed by 25 ft-lbs for the smaller 8mm bolts.
• Always use the current ARP installation instructions for final assembly procedures and torque specifications.

FREQUENTLY ASKED QUESTIONS

What is ARP 134-3610?

ARP 134-3610 is a hex-head cylinder head bolt kit designed for later GM Gen III/Gen IV LS applications using the second-design/all-same-length head-bolt configuration.

What LS engines does 134-3610 fit?

It is commonly used on later 5.3L, 6.0L and 6.2L LS engines, along with other compatible Gen III/Gen IV LS applications using the same head-bolt configuration.

Will 134-3610 fit a 5.3L LS engine?

Yes, when the 5.3L engine uses the later head-bolt configuration for which 134-3610 is specified.

Will 134-3610 fit a 6.0L LS engine?

Yes, applicable later 6.0L LS engines use this head-bolt configuration.

Will 134-3610 fit a 6.2L LS3?

Yes, applicable LS3 engines use the later LS head-bolt configuration.

Does 134-3610 fit LS9?

No. ARP specifically excludes LS9 applications from the 134-3610 application.

What is the difference between ARP 134-3609 and 134-3610?

The 134-3609 is intended for the earlier Gen III LS configuration, while 134-3610 is intended for the later 2004-and-newer configuration with all same-length primary head bolts.

What material are the bolts made from?

ARP identifies the 134-3610 as an 8740 chromoly head bolt kit.

What finish do the bolts have?

The bolts feature a black oxide finish.

Are washers included?

Yes. The kit includes hardened, parallel-ground washers.

What socket sizes are required?

ARP specifies 13mm and 10mm sockets for the 134-3610 installation.

Are these head bolts or head studs?

These are cylinder head bolts. ARP offers separate head stud kits for LS applications.