My post wasn't aimed at you Jeeper
, And your impression may be right! But I'm looking at it as if the converter is slipping at bottom end (not locking up) Needing more throttle at normal driveing speeds on the street bellow lock up and a higher stall converter would just add more converter inefficiency (slippage) at street level RPMs He said its strong at top end RPM ranges but at bottom end its gutless and we don't know his exact description of his low speed complaint!
To me for Drag only I would choose a converter that stalls at around peak torque but for street and strip I would choose a converter that flash stalls before reaching peak torque usually when the cam starts to come into its range! Which is what I think the OP was hoping to achieve (street and strip efficiency) The best of both worlds its a goal not achievable! you lose at both ends LOL? For most street and street/strip combinations he probably would want a stall in the 2,500-3,500rpm range. But he bought an off-the-shelf converter thinking it will give him the advertised stall and unless it has been "PROVEN" to do so in an identical setup he has no Idea what its stall really is? We and the OP have no Idea when his Peak torque is or what his combinations torque and rpm curve is?
The suggestions being made concerning his torque converter, timeing , carb, headers being too small gears ETC are of no value till he gets back on here with results of his first test and if it doesn't work we can help with more tests and suggestions till he straightens out his engine tune.
If the engine was running perfect and we knew his torque range it would make it easy to pin point the power loss through the drive train and chassis!
If a car comes into my shop and has no bottom end but is performing well at mid and top end I'll test drive it, and then I check and trouble shoot the engine first starting at the timing and go down the list to tune and eliminate the engine as being the problem, I don't jump to changing the cam gears and converter thinking that's the problem! But it seems many on this thread jump right to the cam and drive train skipping the engine altogether!!!!!
It would be nice if the OP would at least come and let us know if this thread is still open or if its dead
because I'm going to dump it off my list very soon!