Allstar Performance Carburetor Shear Plate 1/2" Thick 1-3/4" Bores Square Bore Aluminum ALL25970

If you're running a high-overlap cam and struggling with a weak vacuum signal, the Allstar Performance Carburetor Shear Plate (ALL25970) is exactly what your race engine needs. By building a low-pressure dam beneath the throttle plates, this precision-machined plate sharpens throttle response and maximizes carburetor signal for more consistent, powerful performance. Built tough from 6061-T6 aluminum with a clean anodized finish, it's a simple upgrade that makes a real difference on the track.

• Thickness: 1/2" thick
• Bore Size: 1-3/4" diameter
• Flange Type: Square bore
• Material: 6061-T6 aluminum
• Finish: Clear anodized
• Compatibility: Holley 4150/4160 4bbl
• Gaskets: Not included
• Hardware: Not included
• Sold: Individually
• MPN: ALL25970

Whether you're dialing in a dedicated race build or fine-tuning a high-performance street engine, this shear plate is an affordable, race-proven solution from a brand enthusiasts trust. Grab yours and feel the difference from the very first lap.