Description
If you’re running a street carburetor on your performance build, you’re leaving power on the table. This Proform main body conversion kit transforms your stock 650-800 CFM Holley 4150 into a race-calibrated powerhouse by upgrading the core fuel delivery architecture. It’s the efficient path to unlocking consistent, reliable performance without replacing your entire carburetor.
Designed for serious builders who demand precision without compromise, this aluminum main body kit provides the structural foundation for optimized fuel atomization and metering across the RPM band. Installation is straightforward—bolt-on fitment means you can make the conversion in an afternoon without fabrication work.
- Carburetor main body conversion
- Holley 4150 compatible
- 650-800 CFM rated
- 6061-T6 aluminum construction
- Silver anodized finish
- Proform 4777 & 4779 models
- Street-to-performance upgrade
- Bolt-on installation
- MPN: 67100C
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