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ARP 135-5601 Main Stud Kit Chrome Moly Steel - 4-Bolt

(Chevrolet Camaro 1967-70, 1972, Corvette 1973-74, Impala 1965-75, C1500 1990-93, Chevelle 1966-73, Blazer 1973, C10 Pickup 1968-75 + 22 more models)

Part of: ARP Main Stud Kit Chrome Moly Steel

Other options in this family: ARP 154-5403 ARP 140-5401 ARP 154-5401

Manufacturer

Picture for manufacturer ARP

Part Number

135-5601
16 reviews
Sale Price

$165.87

In Stock (10+)

delivery box

Usually delivered within 2 days

free shipping

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Live-in-stock inventory

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Fitment guaranteed

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Product Details

ARP's 135-5601 4-bolt main stud kit delivers professional-grade engine block reinforcement, eliminating main cap walk and fretting while protecting valuable block threads. Engineered for high-performance and racing applications, these main studs provide superior clamping force and durability compared to conventional main bolts.

Key Features:

  • Manufactured from premium 8740 chrome moly steel with heat treatment to 200,000 psi tensile strength
  • J-form threads rolled after heat-treat deliver 1000% greater strength than cut threads
  • Precision-ground hardened washers and aerospace-quality nuts included
  • Studs prevent twisting during installation for more accurate torque readings
  • Reduces stress on block threads, extending engine block life—critical for aluminum blocks
  • Simplifies engine assembly with proper main cap alignment every time
  • Exceeds aerospace fastener specifications for ultimate reliability

ARP manufactures these studs in-house using advanced processes and materials that meet the exacting demands of professional engine builders. The stud design applies all clamping forces on a single axis, eliminating the rotational forces that bolts create when threaded into the block. This results in more consistent torque values and reduced thread wear over multiple assembly cycles.

Products specifications

Fits

Chevrolet Camaro 1967-70, 1972, Corvette 1973-74, Impala 1965-75, C1500 1990-93, Chevelle 1966-73, Blazer 1973, C10 Pickup 1968-75, Caprice 1966-75, El Camino 1966-75, K2500 1991-95, C3500 1988-95, K10 Pickup 1968-69, 1974 + 17 more models

Fastener Nut Style

Standard hex

Fastener Style

Stud

Fastener Yield Strength (psi)

200,000 psi

Main Bolt Style

4-bolt

Nuts Included

Yes

Quantity

Sold as a kit.

Washers Included

Yes

Works with Windage Tray

No

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