Holley pro jection 4 a buddy of mine picked up a used holley projection 4 setup for his 429, however it did not come with any instructions/diagrams. Ive done a little searching and haven't came up with anything for him. I have not seen it and only know its an old school projection 4 setup, not a commander.Any links, tips etc. Part Number 501-12 Pro-Jection 1D, 300 CFM INSTALLATION TUNING AND TROUBLESHOOTING MANUAL NOTE: These instructions must be read and fully understood before beginning.
Holley Pro Jection 2d
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