Carb Size

[Ron61]

Todd,

I have an auto math book that gives all kinds of formulas for figuring out the cfm of the correct carb. However it isn't accurate for all applications. If you remove the air filter and run the car for a short time does that seem to relieve the rich condition. I have 850 double pumpers on both my small and big blocks and they run very clean but I did have to go to a K&N air filter. On the big block I am running 86 jets in both the front and rear so it gets huge amounts of gas as I can watch the gas gauge go down when I start to open it up. But the exhausts are a nice gray color and never any gas smell or flooding. I did have a little trouble with the small block until I took the filter off and drioe it for a few miles and what a difference that made.So I then started looking and found a 15 inch long air cleaner that gives me plenty of clearance and with the K&N filter I have never had another problem. I also gained around 5 horsepower which I badly needed.

Ron