It runs pretty good with the 650 on it, but it is rich,according to my air fuel meter it sits at about 10.2 when I put it in 3rd at 60 and run it to 120 at wide open throttle. That is when I switched to the 650 double pumper, which got rid of my bog problem. I had some ignition problems and at the time thought it was the carb. I increased the squirter size and it helped, but it needs a bigger pump. That was with the 770 on it, but it had a bad bog on the line and every time I start getting on it on the street it goes lean for a second and bogs. Last time I was at the track I ran a 12.44 109 with a 1.88 60 foot. I normally take it to the track once a year. I drive the car quite a bit and have done 5 complete power tours with it. I have a 2004r trans with a 3000 stall convertor and 3.73 gears. I forgot to mention a couple of other helpful details about the car. My other thought is over the winter to buy a Holley 750 ultra double pumper which seems more like what I should be runing. I will probaly jet it down 2 jet sizes in the primarys and the secondarys and see where it goes to. someone must have a nice combo written for you. and then you could boost it to humor the big fat slow venturi. You may find there is no contentment no matter what one does with the jets. The 770 bogging is choking on not enough speed, there is all kinds of flow. it froze in the summer, and started all winter. that cfm stuff is for lack of venturi'd young minds called fuel injection. There are several other tuning tips on that page as well. I guess my 600 vac sec is too big for the 350 hence why it runs fine with downsized jets. Looking at the Holley FAQ page It says to take the engine size multiply it by max rpm then divide it by 3456. That said, given the performance heads and cam he's running, I'd probably suggest getting the 770 tuned for it. I have a 600 vac sec on my 350, even jetted down a size for fuel economy runs fine. Nothing smaller than a 750 on a 350? I suppose if it's a high performance motor that sees lots of time around 7000 rpms, that's fine, but on a stock type 350 a 750 is way too much carb.

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