Therer is a Carter YF calibrated for a Ford 300 that should be close to the right mixture for a Chevy 292, definitely better than the Rochester that was OEM. You can also tinker with the mixture without changing jets or making permanent modifications by altering the float level a little at a time- - - -a higher level goes rich, and lowering the level leans things out a little. Just don't get the float high enough to cause flooding at idle.
Jerry
Last edited by Phak1; 03/20/2024 11:30 AM. Reason: Spelling