Series 4135 Gen 4 LS Head Stud Kit, 04-20 LS3/LS2/LSA/6.2/6.0/5.3

#28981964

Series 4135 Gen 4 LS Head Stud Kit, 04-20 LS3/LS2/LSA/6.2/6.0/5.3

Name: Series 4135 Gen 4 LS Head Stud Kit, 04-20 LS3/LS2/LSA/6.2/6.0/5.3
Brand: Speedway Motors
SKU: 28981964
Price: 127.99 USD
Availability: OutOfStock
Rating: 1 (1 reviews)

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Made from 4135 chromoly steel, with a maximum tensile strength of 190,000 PSI, for unmatched durability and performance under extreme conditions
Threads are rolled after heat treatment and thoroughly tested for tensile and yield strength, ensuring top-tier reliability and strength

$127.99

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Product Summary

12 Point Wrench Type, Stud Fastener Style, Black Oxide

Made from 4135 chromoly steel, with a maximum tensile strength of 190,000 PSI, for unmatched durability and performance under extreme conditions
Threads are rolled after heat treatment and thoroughly tested for tensile and yield strength, ensuring top-tier reliability and strength
Finished with a black oxide coating and oil finish, providing excellent resistance to rust and corrosion for long-lasting performance
Designed with a 12-point configuration, allowing for secure, high-torque fastening and precise applications, particularly for performance and racing setups
Designed specifically for LS engine builds, this stud kit ensures reliable and consistent cylinder head pressure, maximizing engine performance and longevity

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Key Specs

MFG. Part #	734-81964
Brand	Speedway Motors
Fastener Style	Stud
Thread Pitch	11mm-2.0 / 8mm-1.25
Fastener Material	4135 Chromoly Steel

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Speedway Motors 734-81964 Details

Head stud kit for popular 2004-2020 Gen 3 and 4 LS V8 engines
Made from 4135 chromoly steel with 190,000 PSI tensile strength
Precision rolled threads with black oxide finish
Includes 20 long studs, 10 short studs, flat washers, and 12-point nuts
Provides excellent clamping force and easier cylinder head and gasket alignment
Ideal solution for higher compression or boosted street car applications

Head Bolts or Head Studs, Which One Is Right for Your Build?

If you’re putting together a fresh bullet for your muscle car, hot rod, classic truck, or even your daily driver, you might be considering upgrading to head studs over the standard head bolts that you’re used to using. In most cases, the standard cylinder head bolt will suffice for mild performance usage. They also will often save some of your build budget for that hotter camshaft or roller rockers on your wish list as well. Not to mention for really tight engine bays, sometimes cylinder head bolts are the only option from an assembly/servicing standpoint without removing the entire engine just to replace a head gasket or other top end work (and who wants to do that?).

Head studs, on the other hand, provide much more even clamping force, as the nut and washer is tightened it only stretches the stud, providing for a more accurate torque reading versus a head bolt that is tightened into the block threads causing both twisting and stretching. Cylinder head studs also act as alignment dowels for the head gasket and cylinder head that make installation easier and are reusable. This is important where many modern head bolt applications are often a one-time-use “torque-to-yield” fastener. Head studs are certainly the preferred path for those going with higher compression, or higher cylinder pressures from nitrous, or boost pressure from a supercharger or turbo. We offer the most popular applications in our Series 4135 head studs but if you’re looking for even more fastener yield strength consider our expanded line of Series 8740 head studs.

Our Series 4135 Head Studs Provide the Clamping Force Your Engine Needs

Manufactured from 4135 chromoly steel, our Series 4135 head studs feature 140-150K PSI fastener yield strength and 180-190K PSI fastener tensile strength. Each head stud kit includes head studs, washers, and nuts that are finished in a protective black oxide coating and oil finish to resist rust and look good on your engine for many years to come. The studs are heat treated and feature cold rolled threads for smooth and positive engagement in your engine block and are topped off with matching hardened washers with 12-point flange nuts to ensure your cylinder heads can be torqued to their proper spec.

Application

GM 2004-2020 Gen III and IV Small Block V8 LS engines, including LS2, LS3, LSA, and others with the following displacements:

4.8L (293ci)
5.3L (325ci)
5.7L (346ci)
6.0L (364ci)
6.2L (376ci)

Also available in our Series 8740 head studs.

Guides & Documents

Cylinder Head Bolts Installation Instructions (28981964)

CA WARNING:

Can expose you to lead, a carcinogen and reproductive toxicant. See www.P65Warnings.ca.gov

Speedway Motors 734-81964 Specifications

KEY SPECS
MFG. Part #	734-81964
Brand	Speedway Motors
Fastener Style	Stud
Thread Pitch	11mm-2.0 / 8mm-1.25
Fastener Material	4135 Chromoly Steel

GENERAL
Wrench Type	12 Point
Head Style	12 point
Tensile Strength	190000
Fastener Finish	Black Oxide
Washers Included	Yes
Sold in Quantity	Set
Finish	Black Oxide
Color	Black Oxide
Material Type	4135 Chromoly Steel

Ratings & Reviews

1 Review

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1.0

11 months ago

Rob

Florida

Verified

Looks well made and torqued down well. However, when they arrived there were no specs and upon contacting, I received no help with the specs. Found the same arp head stud kit and used that torque. Will see how it performed.

Would Not Recommend

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Fitment

2006-2007 Cadillac CTS

GM LS2

2009-2014 Cadillac CTS

GM LSA

2012 Cadillac Escalade

6.2 Chevy LS V8

2013 Cadillac Escalade

GM L9H

2014 Cadillac Escalade

GM L94

2007-2012 Cadillac Escalade ESV

6.2 Chevy LS V8

2013 Cadillac Escalade ESV

GM L9H

2014 Cadillac Escalade ESV

GM L94

2007-2012 Cadillac Escalade EXT

6.2 Chevy LS V8

2013 Cadillac Escalade EXT

GM L9H

2007-2011 Chevy Avalanche

GM L76
GM LC9
GM LMG
GM LY5

2012-2013 Chevy Avalanche

GM LY5

2010-2014 Chevy Camaro

GM LS3

2005-2007 Chevy Corvette

GM LS2

2008-2013 Chevy Corvette

GM LS3

2006-2009 Chevy Impala

GM LS4

2006-2007 Chevy Monte Carlo

GM LS4

2000-2011 Chevy Silverado 1500

GM L20
GM LY2

2019 Chevy Silverado 1500 LD

GM L98

2005-2014 Chevy Silverado 2500

GM L98

2012-2014 Chevy Silverado 2500 HD

GM L98

2007-2013 Chevy Silverado 3500

GM L98

2015-2018 Chevy Silverado 3500

GM L98

2012 Chevy Silverado 3500 HD

GM L98

2013 Chevy Silverado 3500 HD

GM LZ1

2014-2017 Chevy SS

GM LS3

2005-2006 Chevy SSR

GM L77

2014 Chevy Suburban

GM LMG
GM LY5

2007-2009 Chevy Suburban 1500

GM LC9
GM LMG
GM LY5

2010-2011 Chevy Suburban 1500

GM LC9
GM LMG

2012-2014 Chevy Suburban 1500

GM LMG
GM LY5

2007-2011 Chevy Suburban 2500

GM L96

2012-2013 Chevy Suburban 2500

GM LMG
GM LY5

2007 Chevy Tahoe

GM LMG
GM LY5

2008 Chevy Tahoe

6.2 Chevy LS V8
GM L9H
GM LC9
GM LMG
GM LZ1

2009 Chevy Tahoe

GM L9H
GM LC9
GM LMG
GM LZ1

2010-2011 Chevy Tahoe

GM LC9
GM LMG
GM LZ1

2012-2014 Chevy Tahoe

GM LMG
GM LY5

2002-2005 Chevy Trailblazer

GM LH6

2006-2009 Chevy Trailblazer

GM LS2

2006-2014 GMC Savana 1500

GM L94

2006-2013 GMC Savana 2500

GM L94

2006-2013 GMC Savana 3500

GM L94

1999-2011 GMC Sierra 1500

GM L20
GM L9H
GM LC9
GM LMG
GM LZ1

2015-2019 GMC Sierra 2500 HD

GM L96

2007 GMC Sierra 3500

GM L96

2007-2011 GMC Sierra 3500 HD

GM L96

2015-2019 GMC Sierra 3500 HD

GM L96

2000-2007 GMC Yukon

GM L20
GM LY2

2008-2011 GMC Yukon

GM L20
GM L94
GM LY2
GM LZ1

2012-2013 GMC Yukon

GM L94
GM LC9
GM LMG
GM LZ1

2012-2014 GMC Yukon XL 1500

GM L96

2012-2013 GMC Yukon XL 2500

GM L96

2008-2009 Hummer H2

6.2 Chevy LS V8

2008-2009 Hummer H3

GM LH8

2010 Hummer H3

GM LH9

2009 Hummer H3T

GM LH8

2010 Hummer H3T

GM LH9

2009 Pontiac G8

GM LS3

2005-2006 Pontiac GTO

GM LS2