Highest LIft cam with 68 340 with stock intake and carb

With stock intake and carb What is the highest LYFT camp you can get away with my motor has a 585 lift, just wondering if this engine is being held back by the stock intake and carb it does have an MSD ignition thanks all for your input
Johnny
For a streeter no, First gear is good to over 50 mph and will be spinning all the way. Second is good to over 70.
If you can make it hook zero to 60 will be in the low 5s. A bigger intake and bigger carb, may shave some time off that, but only the stopwatch will know it.
Spend your money on getting it to hook.
Then headers, those logs are costing you a lot of power by as good as killing the overlap cycle. I realize it's only 56*, compared to the stocker at 44*but this cycle occurs at or near TDC where the piston is dwelling for a time. These 56* are 48% of the intake stroke(117.5). If you think about it, this is a lot of time. With no headers to put the yank on the intake charge, this is lost time; time you will never get back. You might as well put a cam in there 2 or 3 sizes smaller, and get some decent bottom-end torque back.
more comming