That's interesting to hear, looking at the numbers and the Holley cfm to cu.in. chart; I'd think that 870 would be too much carb for even a (mild) 408. How is throttle response on your 360 and how did you decide on the 870 over the 770?
I have never seen anyone really go by that chart... they always went bigger on the carb. I never have went with they advise. The stock Thermoquad that most mopars engines came with was 850 cfm if Im not mistaken.
