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SKU: ATI950267
ATI Damper Bolt Pack for Chevrolet Small Block, Big Block & Pontiac V8 (1955–2000)
The ATI ATI950267 Damper Bolt Pack provides the exact 9-bolt hardware required to properly secure ATI Super Dampers on Chevrolet Small Block, Big Block, and Pontiac V8 engines from 1955–2000.
This kit includes six 5/16-18 x 1-inch bolts for the inner bolt pattern and three 3/8-16 x 1.5-inch bolts for the outer pattern. Manufactured from Grade 8 alloy steel, these bolts are designed to handle the extreme loads, vibration, and high-RPM conditions found in performance and racing engines.
Using the correct bolts ensures your damper stays securely locked in place, preventing slippage that can rob horsepower and damage your engine.
Key Features
- Exact OEM-Style Fitment – Specifically designed for ATI Super Dampers using the 6 small + 3 large bolt pattern
- Grade 8 Alloy Steel – High tensile strength (150,000 PSI) for superior durability under extreme loads
- Complete 9-Bolt Kit – Includes all required fasteners in one convenient package
- Precision Threads – Engineered for smooth installation without cross-threading or stripping
- Racing Proven – Trusted in drag racing, oval track, and high-horsepower street/strip applications
- Lightweight Design – Only 0.31 lbs total to minimize rotational mass
Specifications
| Detail | Value |
|---|---|
| Brand | ATI (Advanced Tuning Inc.) |
| Type | Damper Bolt Pack (9 Bolts) |
| Compatibility | Chevy Small Block, Big Block & Pontiac V8 (1955–2000) |
| Small Bolts | 6x 5/16-18 x 1" |
| Large Bolts | 3x 3/8-16 x 1.5" |
| Material | Grade 8 Alloy Steel |
| Weight | 0.31 lbs |
| Country of Origin | United States |
| Warranty | ATI Limited Warranty |
Whats Included
- 6x 5/16-18 x 1" Bolts
- 3x 3/8-16 x 1.5" Bolts
Product Notes
- Designed for use with ATI Super Dampers (PN 918xxx & 919xxx series)
- Apply thread locker during installation for added security
- Professional installation and proper torque specs are strongly recommended
This Part Fits
| Year Range | Make | Engine | Notes |
|---|---|---|---|
| 1955–2000 | Chevrolet | Small Block V8 (262–400 cid) | With ATI Super Damper |
| 1965–1996 | Chevrolet | Big Block V8 (396–454 cid) | With ATI Super Damper |
| 1967–1981 | Pontiac | V8 (350–400 cid) | With ATI Super Damper |
Why Choose ATI?
- Industry leader in SFI-approved harmonic dampers since 1980
- Hardware specifically engineered to match ATI Super Damper specifications
- Proven in NHRA and IHRA racing applications
- USA-made with tight tolerances for professional engine builders
Frequently Asked Questions
- Q: Will this bolt kit work with my ATI Super Damper on a 350 Chevy?
- A: Yes, it fits all ATI Super Dampers on Chevrolet Small Block engines (262–400 cid) from 1955–2000 that use the 6 small + 3 large bolt pattern.
- Q: What torque specs should I use?
- A: Torque the small bolts (5/16") to 25 ft-lbs and the large bolts (3/8") to 55 ft-lbs using a calibrated torque wrench.
- Q: Do these bolts come with thread locker?
- A: No, thread locker is not included. We recommend applying thread locker during installation.
- Q: Can I use these bolts with a non-ATI damper?
- A: No. These bolts are specifically designed for ATI Super Dampers and their unique bolt pattern.
Shipping & Handling
- Method: UPS Ground
- Availability: In stock – ships same or next business day
- Packaging: Compact protective box (4" x 4" x 1")
- Weight: 0.31 lbs
ATI
ATI Performance Products has been at the forefront of race-winning drivetrain engineering since the 1980s, with over a dozen U.S. patents backing a catalog built for serious competition. From drag racing's top professional classes down to weekend street/strip builds, ATI components are trusted when reliability and power transfer are non-negotiable.Popular UpgradesThe ATI Super Damper is the gold standard in harmonic balancer technology, reducing crankshaft torsional vibration to protect engine components under high-RPM loads. The Superglide transmission series and Treemaster Converters are proven choices for automatic-equipped performance builds, while the Compu-Flow Valve Bodies add precision shift control. Flexplates, adapter kits, and internal transmission components round out the catalog for builders needing complete drivetrain solutions.Are ATI Super Dampers street legal?Yes. ATI Super Dampers are SFI-certified and designed for both street and strip use. They are a direct repla...
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