ARP
ARP GM LS Head Stud Kit - 2004 & Later
Engines: LS Series
Pickup in East Rockingham
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Overview
Head stud kit for GM Gen III/IV LS-series engines, 2004 and later, using equal-length main studs. All options have 12-point nuts. LSA, LS9 and specialist aftermarket block/head applications require separate kits.
Each option is one complete ARP kit. Choose the specification required for your application.
- 234-4317: 8740 Chrome Moly
- 234-4345: ARP2000
- 234-4314: Custom Age 625+
Compatible engines
LS Series
Fitment
Confirm fitment before ordering. Contact us if you need help matching parts to your build.
Specifications
- Manufacturer torque spec
-
- 1. Inspect all hardware prior to installation. Look for obvious defects or shipping damages. Please call 800-826-3045 with any questions or issues.
- 2. To ensure proper thread engagement and accurate torque readings, clean all threads in the block. Chase if necessary with ARP Thread Chaser, part number 912-0011 (M11 X 2.0) and 912-0001 (M8 X 1.25).
- 3. Clean the spot faces on the cylinder head where the washer seats, use of solvent or brake/carb cleaner is recommended.
- 4. Install the head gasket and cylinder head.
- 5. Screw the studs into the block hand tight, do not apply torque. The hex broach in the end of the stud is designed to assist with installing/removing the studs from the block, not for applying torque. Install the 8mm studs in locations 11-15.
- 6. Then, using a clean, dry rag remove all oil from both sides of each washer. The cylinder head and washer mating surfaces must be free of oil/grease/lubricant. Failure to keep these surfaces dry may result in inconsistent preloads.
- 7. Place the washers over the studs and on to the dry, clean spot faces of the cylinder head
- 8. Lubricate the stud threads and bottom of the nuts with ARP Ultra-Torque Fastener Assembly Lubricant. Then install the nuts onto the studs and tighten hand tight.
- 9. Following the manufacturers recommended torque sequence.
- NOTE: See instructions that come with bolts or in this products description for torque sequence.