Talk to the experts. Call 800.979.0122, 7am-10pm CST, everyday.

REWARDS

GIFT CARDS

DEALS

TRACK ORDER

HELP CENTER

My

List

Menu

Shop

Garage

Cart

Account

Series 8740 Gen 3 LS Head Stud Kit, 97-03 LS1/5.3 LM7/6.0 LQ4
Series 8740 Gen 3 LS Head Stud Kit, 97-03 LS1/5.3 LM7/6.0 LQ4
Speedway Motors

|

#91065304

Series 8740 Gen 3 LS Head Stud Kit, 97-03 LS1/5.3 LM7/6.0 LQ4

  • 8740 Chromoly Steel rated 190,000psi for dependable clamp load
  • Rolled after heat treatment threads promote accurate torque and even loading
  • Black Oxide finish for corrosion protection and service longevity
See More

$139.99

/set

In Stock


Quantity

Need Help? Call to Order

Add to a list

Share

Select an engine to verify Fitment

Select Engine

Product Summary

Stud Fastener Style, 11mm-2.0 / 8mm-1.25 Thread Pitch

  • 8740 Chromoly Steel rated 190,000psi for dependable clamp load
  • Rolled after heat treatment threads promote accurate torque and even loading
  • Black Oxide finish for corrosion protection and service longevity
  • Kit includes: 12 -Point Studs, 12 -Point Stud, 16 Long Studs, 4 Medium Studs, 10 Short Studs
  • Supports head gasket sealing in performance and rebuilds
See more details

Key Specs

MFG. Part #91065304
BrandSpeedway Motors
Fastener StyleStud
Thread Pitch11mm-2.0 / 8mm-1.25
Fastener Material8740 Chromoly Steel
See more specs

Need To Know

Need help?

855.313.9176
View the Help Center

Quick and Easy Returns

Return Policy

Speedway Motors 91065304 Details

  • Manufactured from 8740 chromoly steel
  • Tensile strength of 190,000 psi
  • Precision ground and thread-rolled after heat treatment
  • Includes 4130 heat-treated parallel-ground washers
  • Comes with high-strength 12-point nuts
  • Designed to eliminate main cap walk and fretting
  • Protects threads in engine block
  • Ensures consistent torque readings
  • Ideal for performance and racing applications

Getting the top end sealed and staying that way starts with the right studs. This Cylinder Head Stud Kit for GM LS 12-Point Head Stud Kit | 35 Chromoly | Black Oxide uses 8740 Chromoly Steel with a black oxide finish, rated at 190,000psi. The Rolled after heat treatment threads help deliver repeatable torque and even clamp load, whether you're buttoning up a fresh build or servicing a seasoned combo. Everything you need is in the box-12 -Point Studs, 12 -Point Stud, 16 Long Studs, 4 Medium Studs, 10 Short Studs-so you can assemble with confidence and focus on final torque, not parts chasing. Built for reliability under heat and pressure, this kit helps prevent gasket movement and fastener stretch for consistent sealing.

Kit Contents:

  • 16 Main Studs
  • Matching washers and nuts

Application

Chevrolet Small Block V8 Gen III / IV (LS based) Model Years: 1997-2003

  • 4.8 L / 293 cu. in.
  • 5.3 L / 325 cu. in.
  • 5.7 L / 346 cu. in.
  • 6.0 L / 364 cu. in.

Speedway Motors 91065304 Specifications

KEY SPECS
MFG. Part #91065304
BrandSpeedway Motors
Fastener StyleStud
Thread Pitch11mm-2.0 / 8mm-1.25
Fastener Material8740 Chromoly Steel
GENERAL
Head Style12 point
Tensile Strength190,000 psi
Fastener FinishBlack Oxide
Washers IncludedYes
Sold in QuantityKit
FinishBlack Oxide
Material Type8740 Chromoly

Fitment

  • GM LM4

  • GM LS6

  • GM LM7

  • GM LQ9

  • GM LM7

  • GM LQ9

  • GM LM7

  • GM LQ9

  • GM LM7

  • 4.8 Chevy LS V8

  • GM LM7

  • GM LQ4

  • GM LS1

  • GM LS1

  • GM LS1

  • GM LS6

  • 4.8 Chevy LS V8

  • GM LM7

  • GM LQ4

  • GM LQ4

  • GM LQ4

  • GM LQ9

  • GM LQ4

  • GM LM7

  • GM LQ4

  • GM LQ9

  • GM LQ4

  • GM LQ4

  • GM LQ4

  • GM LQ4

  • GM LQ4

  • GM LM4

  • GM LM7

  • GM L59

  • GM LM7

  • GM LQ4

  • 4.8 Chevy LS V8

  • GM L59

  • GM LM7

  • 4.8 Chevy LS V8

  • GM LM4

  • GM LM4

  • GM LM4

  • 4.8 Chevy LS V8

  • GM LM7

  • GM LQ4

  • 4.8 Chevy LS V8

  • GM L33

  • GM LM7

  • GM LQ4

  • 4.8 Chevy LS V8

  • GM L33

  • GM LQ4

  • 4.8 Chevy LS V8

  • GM LM7

  • GM LQ4

  • 4.8 Chevy LS V8

  • GM L33

  • GM LQ4

  • 4.8 Chevy LS V8

  • GM LM7

  • GM LQ4

  • 4.8 Chevy LS V8

  • GM L33

  • GM LQ4

  • GM L33

  • GM L59

  • GM LM7

  • GM LQ4

  • GM LQ4

  • GM LQ4

  • GM LM7

  • GM LQ4

  • GM LQ4

  • GM LQ4

  • GM LQ4

  • GM LQ4

  • GM LQ4

  • GM LQ4

  • 4.8 Chevy LS V8

  • GM LM7

  • GM LM7

  • GM L59

  • GM LM7

  • GM LQ4

  • GM LQ4

  • GM LQ4

  • GM LS1

  • GM LS1

Customer Impersonation Script