![A-Team Performance 6 3/4" SFI Certified Harmonic Balancer 400 Compatible with Chevrolet SBC Small Block Chevy V8 GEN. I Black — Southwest Performance Parts A-Team Performance 6 3/4" SFI Certified Harmonic Balancer 400 Compatible with Chevrolet SBC Small Block Chevy V8 GEN. I Black — Southwest Performance Parts](https://swperformanceparts.com/cdn/shop/products/a-team-performance-small-block-400-6-3-4-sfi-certified-harmonic-balancer-for-chevrolet-sb-v8-gen-i-black-555541_1024x1024.jpg?v=1677266298)
A-Team Performance 6 3/4" SFI Certified Harmonic Balancer 400 Compatible with Chevrolet SBC Small Block Chevy V8 GEN. I Black — Southwest Performance Parts
![Proform 6-3/4" Harmonic Balancer; Center Timing Mark, Fits Chevy Small Block 350 Engines, 66509 - Advance Auto Parts Proform 6-3/4" Harmonic Balancer; Center Timing Mark, Fits Chevy Small Block 350 Engines, 66509 - Advance Auto Parts](https://shop.advanceautoparts.com/wcsstore/CVWEB/staticproductimage/N6000A/large/22740055_prf_66509_pri_larg.jpg)
Proform 6-3/4" Harmonic Balancer; Center Timing Mark, Fits Chevy Small Block 350 Engines, 66509 - Advance Auto Parts
![so i'm fairly certain that this wont work as a 6-4 balancer but i am new at trying to design them. could someone tell me if and why this dose not work. : so i'm fairly certain that this wont work as a 6-4 balancer but i am new at trying to design them. could someone tell me if and why this dose not work. :](https://preview.redd.it/so-im-fairly-certain-that-this-wont-work-as-a-6-4-balancer-v0-pxp88y389gx91.png?width=640&crop=smart&auto=webp&s=ab128e2e1523135f3fd503b56836f6425a58b07a)