Joined: Nov 2016
1801 is a good little carb for a 289. Nothing fancy; the CFM requirements for your engine should be spot on. That carb should be fine to somewhere north of 7k RPMs - and clearly, your build is not designed for that.
At a wild guess, you never get above 5700 RPMs with your motor - calculating in 83% volumetric efficiency says you'd need about 396 cfm for that RPM. If your engine's more efficient, or you're winding it higher, you can see there's still some cushion available. Your little carb should give you good throttle response.
As a street setup with some giddyup, it'd be perfect.
Last edited by Grimbrand; 03-21-2018 at 01:30 PM.