134-3701 SBC V8 Cylinder Head Bolt Kit, High Performance, 12-Point, ARP

Hawks Motorsports is pleased to offer our clients the 134-3701 SBC V8 Cylinder Head Bolt Kit, High Performance, 12-Point, ARP. This High Performance Series cylinder head bolt kit is designed for select Chevrolet Small Block V8 applications and features 12-point heads, chromoly construction, black oxide finish and hardened parallel-ground washers. ARP rates these fasteners at 180,000 PSI tensile strength.

For the builder who'd rather spend time getting the SBC right than fighting with hardware, this is a solid piece of engine-building gear. The compact 12-point head and wide flange make these bolts especially useful when you're assembling a performance small-block and want access around the valvetrain for future head retorquing.

The ARP 134-3701 is intended for Small Block Chevrolet applications using compatible cylinder heads, including 23-degree cast-iron OEM heads and a range of aftermarket performance heads. Because aftermarket cylinder heads can use different bolt configurations, verify the specific head manufacturer's requirements before ordering.

KEY FEATURES

• ARP High Performance Series cylinder head bolt kit
• ARP Part Number: 134-3701
• 12-point head design
• 180,000 PSI tensile strength rating
• Chromoly construction
• Black oxide finish
• Wide-area flanged bolt head
• Hardened, parallel-ground washers included
• Designed for select Chevrolet Small Block V8 applications
• 7/16" diameter fasteners
• 7/16"-14 thread specification
• Sold as a complete kit
• Designed to facilitate cylinder-head retorquing without requiring valvetrain removal in applicable installations

PRODUCT SPECIFICATIONS

ARP's installation instructions identify the High Performance Series kit as 180,000 PSI and 7/16" diameter. Current product specifications identify 134-3701 as chromoly, black oxide, 12-point and supplied with washers.

VEHICLE FITMENT / FITS THE FOLLOWING MODELS

This is an engine and cylinder-head specific fastener kit, so fitment should be determined by the actual Small Block Chevrolet engine and cylinder heads rather than vehicle year alone.

Verified SBC Applications

ARP identifies 134-3701 for Chevrolet Small Block applications including:

• 283
• 302
• 305
• 307
• 327
• 350
• 400
• Small Block Chevrolet V8 applications using compatible heads

Compatible Cylinder Head Applications

Current application information identifies the kit for:

• 23-degree cast-iron OEM Chevrolet cylinder heads
• Gen III Vortec/Truck heads
• Most Edelbrock applications
• LT-AFR heads
• Brodix -8, -10, -11 and -11XB heads
• LT-1 heads
• Dart Pro-1 heads
• Trick Flow heads
• Most World Products heads

IMPORTANT APPLICATION NOTES AND EXCLUSIONS

• Verify the cylinder-head bolt pattern and fastener requirements before ordering.
• Aftermarket cylinder heads may use application-specific fasteners or different bolt lengths.
• The kit is intended for compatible Small Block Chevrolet cylinder heads; it should not be treated as a universal SBC head-bolt kit.
• Do not select this kit solely by engine displacement.
• Confirm the actual cylinder-head manufacturer and model when using aftermarket heads.
• This is a head bolt kit, not a head stud kit.
• ARP lists 134-3701 separately from its 134-3601 hex-head SBC kit.

INSTALLATION NOTES

• Thoroughly clean all cylinder-block threads before installation.
• Chase the threads if necessary to ensure proper thread engagement and accurate torque readings.
• Inspect all fasteners before installation.
• Install the washers with the chamfered side facing the bolt head as specified by ARP.
• Where bolts enter a water jacket, ARP specifies use of thread sealer.
• Where bolts enter blind holes, ARP specifies ARP Ultra-Torque Fastener Assembly Lubricant.
• Lubricate the underside of the bolt head and washer with ARP Ultra-Torque before final installation.
• Follow the cylinder-head manufacturer's recommended tightening sequence.
• ARP specifies tightening the bolts in three equal steps to 70 ft-lbs using ARP Ultra-Torque Fastener Assembly Lubricant.
• Always follow the latest ARP installation instructions and the cylinder-head manufacturer's specifications for the particular engine and head combination.

FREQUENTLY ASKED QUESTIONS

What is ARP 134-3701?

ARP 134-3701 is a High Performance Series 12-point cylinder head bolt kit for compatible Chevrolet Small Block V8 applications.

What engines does ARP 134-3701 fit?

ARP lists the kit for Chevrolet Small Block applications including 283, 302, 305, 307, 327, 350 and 400 engines when equipped with compatible cylinder heads.

Are these 12-point head bolts?

Yes. ARP 134-3701 uses a 12-point head design.

What size are the bolts?

ARP's installation instructions identify the High Performance Series head bolts as 7/16" diameter. Current application specifications identify the thread as 7/16"-14.

What are these bolts made from?

The 134-3701 is identified as a chromoly/8740 chrome-moly fastener with a black oxide finish.

Are washers included?

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

What is the tensile strength?

ARP rates the High Performance Series 134-3701 at 180,000 PSI tensile strength.

Can these bolts be used with aftermarket SBC heads?

They are listed for several aftermarket cylinder-head applications, including Edelbrock, LT-AFR, Brodix, LT-1, Dart Pro-1, Trick Flow and most World Products heads. Verify the specific cylinder-head manufacturer's requirements before installation.

What torque should be used?

ARP's installation instructions specify 70 ft-lbs using ARP Ultra-Torque lubricant, with the bolts tightened in three equal steps following the manufacturer's recommended torque sequence.

Is 134-3701 the same as ARP 134-3601?

No. ARP lists 134-3701 as the 12-point SBC head-bolt kit, while 134-3601 is the corresponding hex-head version.