my car has a performance high lift cam and i dont no the size of it my gears are 3.42. i have like no power off the line and i have checked out everything that could cause this so i am thinking it is the stall in my th350. what i find with my car is it has massivepower close to,or over 3000rpms, anything less is just bla. i cant even spin my tires out of the hole.
my question is what stall converter do i get to fix this problem??

 

What's the engine? What's your estimated horsepower, or a recent 1/4 mile timeslip?

There's a couple possibilities for loss of low end power. Timing chain slack. Weak ignition. Broken fuel injectors/over-jetted carb. High-rpm cam (high lift, probably longer duration). Bad sensors like O2. Tranny slip.

The important part in choosing a stall converter is to not over-stall it. Find some manufacturer's numbers and call them, see what they say for stall speed. JEGS and Summit techs have both given me advice...I also called B&M and TCI with numbers from their websites.

Your engine is a carbed 305 is it not?

Even though your power feels like it's over 3000.....I wouldn't stall it at 3000. That's probably too much for that motor. If the engine is a smaller V8, they can't make enough low-end torque to achieve the indicated stall speed. This results in, again, sluggish power off the line and a sort of 'rev up' before takeoff that makes it seem like a fivespeed or bad tranny. I wouldn't stall it at over 2500 if I were you.

FYI, stock flash stall (tested by nailing the gas and seeing approx. what rpm the engine goes to before the car moves) is approx. 1300-1500.