The fastes 340 so far in F.A.S.T is 11.42, remember thats on skinny bi-ply tires with gears in the 3.70 to 3.90 range. Add slicks, 4.30, and a stall about 800 higher than the 2800 or so that they run and your moving with those stock logs
i'll bet that 340 is well over 400 cubes, you know it ha a custom grind cam in it, huge compression, hogged out heads gutted battery with tiny one inside it, car is lightened all over the place probably gutted out deats that just look useable...etc...etc...etc.. all kinds of exotic crap. maybe even traction control. those fast cars are cool but lets not confuse what they are. there is huge money into them to get them to run like that. they sure aren't your run of the mill 340 cars running like that on bias ply tires.