THOROUGHBRED DIESEL FHSD0116 Operating instructions

Brand
THOROUGHBRED DIESEL
Model
FHSD0116
Type
Operating instructions

THOROUGHBRED DIESEL FHSD0116 Performance Head Stud Kit is designed for heavy-duty applications and provides superior clamping force for Chevy/GMC 6.6L Duramax Diesel engines. The kit includes 36 head studs, nuts, and washers, along with 8 head bolts and assembly lube. It enables precise torque sequencing and helps prevent head gasket failures. Installation requires a 12pt socket set, torque wrench, and thread chaser for M12 x 1.5 and M8 x 1.25 threads. Proper installation ensures optimal engine performance and reliability.

THOROUGHBRED DIESEL FHSD0116 Performance Head Stud Kit is designed for heavy-duty applications and provides superior clamping force for Chevy/GMC 6.6L Duramax Diesel engines. The kit includes 36 head studs, nuts, and washers, along with 8 head bolts and assembly lube. It enables precise torque sequencing and helps prevent head gasket failures. Installation requires a 12pt socket set, torque wrench, and thread chaser for M12 x 1.5 and M8 x 1.25 threads. Proper installation ensures optimal engine performance and reliability.

Thoroughbred Diesel Fasteners Performance Head Stud Kit
Fits: Chevy/GMC 2001-2016 6.6L Duramax Diesel • Part Number:
FHSD0116
Parts Included: Tools Needed:
(36) Head Studs •12pt Socket Set
(36) Head Stud Nuts •Torque Wrench
(36) Head Stud Washers •Thread Chaser
(8) Head Bolts - M12 x 1.5 (item# TCCM12x1.5)
(1) Assembly Lube - M8 x 1.25 (item# TCCM8x1.25)
Please Read Instructions before starting installation. If you don’t feel condent that
you can complete this task, do not start it and seek professional help!
q These instructions only cover the installation and torque sequence/technique of the Head Stud Kit.
q Clean and inspect the Studs, Washers, and Nuts to ensure they are free of shipping damage and obvious defects.
q Clean all threads in the block. It is recommended to use a Thread Chaser on the threads of the block to ensure
they are completely clean.
q Lubricate the threads of the Head Studs and install them into the block. Be sure to only screw them in HAND
TIGHT. Look across the tops of the head studs to see that they all appear to be the same length. If one is taller,
remove the stud, clean the threads in the block and reinstall.
q Install the head gaskets and cylinder heads; check for any misalignment.
q Place head stud washers onto the head studs. Then lubricate top of head stud washers and head stud threads
with assembly lube.
q Lubricate the mating face and threads of the Head Stud Nuts with Assembly Lube and install them onto the Head
Studs tightening them HAND TIGHT.
Thoroughbred Diesel
Fasteners Performance Head Stud Kit for 6.6L Chevy/GMC Instructions • December, 2021 (Page 1 of 2)
q Snug all Head Stud Nuts on the Head Studs, then follow the torque sequence below in a 3-step process for the
Head Stud Nuts.
1. Therstroundshouldbeto40ftlbs.(positions1-18)
2. Thenrepeatthesequencefor80ftlbs.(positions1-18)
3. Followed by 125 ft lbs. (positions 1-18)
• The amount of Head Stud threads showing above the Head Stud Nut should all be about the same. If one
appears to have more thread, the stud is most likely not all the way in the head.
q Lubricate the mating face (bottom of head) and threads of the Upper Row 8mm Bolts with Assembly Lube and
install them following the torque sequence below in a 2-step process going from inward-out.
1. Therstroundshouldbeto10ftlbs.
2. Followed by 25 ft lbs.
1
2 7
89
10
3 11
15
16
17
18
M8 M8 M8 M8
1213
14 6
45
Disclaimer and Liabilities
Seller disclaims any responsibility/ liability for improper, incorrect, or inexperienced installation of products by the purchaser
or installer resulting in damage or loss. Buyer affirms by purchase of this product that it is fit for intended use and accepts all
liability. Buyer affirms products are used at buyers own risk and accepts full responsibility.
Thoroughbred Diesel
Fasteners Performance Head Stud Kit for 6.6L Chevy/GMC Instructions • December,
2021 (Page 2 of 2)
  • Page 1 1
  • Page 2 2

THOROUGHBRED DIESEL FHSD0116 Operating instructions

Brand
THOROUGHBRED DIESEL
Model
FHSD0116
Type
Operating instructions

THOROUGHBRED DIESEL FHSD0116 Performance Head Stud Kit is designed for heavy-duty applications and provides superior clamping force for Chevy/GMC 6.6L Duramax Diesel engines. The kit includes 36 head studs, nuts, and washers, along with 8 head bolts and assembly lube. It enables precise torque sequencing and helps prevent head gasket failures. Installation requires a 12pt socket set, torque wrench, and thread chaser for M12 x 1.5 and M8 x 1.25 threads. Proper installation ensures optimal engine performance and reliability.

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