Originally Posted By madscientist
Originally Posted By gzig5
Originally Posted By BSB67
Few people seem to like the 4165/4175 carbs. And that's putting it in a positive light. That said, I have an 800 cfm 4165 and is one of my favorite carbs on a factory spreadbore intake on a stock to slightly warmed up 440. twocents


I dont' know enough yet to say one way or the other but I'll be able to directly compare it to the 4150 model it will be replacing. I'm not sure what makes 4150 DP perform different from a 4165.



That's why I asked what intake you had. A square intake with a spread bore carb and an adapter is a bad idea. The adapter pisses the carb off and it won't be happy.


Initially the motor has a LD4B with the 6711 and an adapter. It will be getting an Air Gap this summer. Got the 6711 torn down last week and found a crack in the base plate at a front mounting boss. Going to have to see if I can weld that up before I commit to the rebuild.