ATI Damper 7.074in Steel External Balance 3 Ring (Buick V8 430455 Engines) ATI918400
High-Strength 7.074in Steel Super Damper for Buick 430455 V8 Engines (External Balance)
The ATI 7.074-inch Steel Super Damper (part ATI918400) is engineered specifically for Buick big-block 430455 V8 engines with external balance. Built from heavy-duty steel with a precision-machined 3-ring inertia assembly, this damper provides exceptional harmonic control, reliability, and crankshaft protection. Whether used in high-performance street builds, classic restorations, or race-prepped Buicks, the ATI918400 ensures smoother operation, improved durability, and consistent balance under heavy torque loads.
Performance Highlights
- 7.074-inch outer diameter provides enhanced harmonic control for large-displacement engines
- Steel construction withstands high RPM and extreme vibration environments
- 3-ring inertia design offers precise damping performance for external balance applications
- Optimized for Buick 430455 big-block engines to reduce crankshaft stress and extend component life
- SFI 18.1 certified for professional racing and motorsport compliance
- Fully rebuildable for long-term accuracy and serviceability
Quick Specs
- Outer Diameter: 7.074 inches
- Material: Steel
- Balance Type: External
- Rings: 3
- Design: Super Damper (External Balance)
- Certification: SFI 18.1
- Applications: Buick 430455 V8 Engines
- Part Number: ATI918400
Why Choose ATIs External Balance Super Damper for Buick V8 Engines?
The ATI918400 Super Damper delivers precision-engineered vibration control for externally balanced Buick 430455 engines. Its heavy steel construction ensures stability under extreme power and RPM, making it ideal for street performance or competition use. Unlike stock units, ATIs design eliminates torsional crankshaft distortion, improving bearing life and preserving engine balance for maximum reliability and performance.
Frequently Asked Questions
What does external balance mean for this damper?
External balance refers to engines that rely on counterweights in both the damper and flywheel/flexplate to achieve total balance. The ATI918400 is designed to match that configuration for Buick 430455 V8s.
Is this damper suitable for racing applications?
Yes. Its SFI 18.1 certified and engineered to handle the stress of drag, circle track, and high-performance street racing environments.
Can this damper be serviced or rebuilt?
Yes. The ATI918400 is fully rebuildable using genuine ATI service parts, maintaining its performance for the life of your engine.
Will this fit internally balanced Buick engines?
No. This model is specifically designed for externally balanced 430455 Buick V8s. For internally balanced engines, a different ATI damper model is required.
Contact Beefcake Racing
Beefcake Racing is your go-to source for ATI Super Dampers and precision engine components for classic and high-performance Buick applications. For product support or to order, email sales@beefcakeracing.com or call 1-855-827-7223. Our experts can help you find the perfect damper for your big-block Buick build.
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