Check up on timing before you start messing around.. I'll sugest 12-16 initial with 30-34 at 3000rpm. Check with vacuum advance disconnected.. Vacuum advance should be manifold vacuum, and preferably does not add more than 12 in idle.
Next. Do you know if it is running on all cylinders?
How about the fuel filter, and pressure?
If your supposedly powerful engine wont do a burnout it is not your gearing. My old stock 305 150hp had no problems spinning the tires on a 2.41 rear end. You even have a stall in it?
If none of the above is the problem, swap the converter
Next. Do you know if it is running on all cylinders?
How about the fuel filter, and pressure?
If your supposedly powerful engine wont do a burnout it is not your gearing. My old stock 305 150hp had no problems spinning the tires on a 2.41 rear end. You even have a stall in it?
If none of the above is the problem, swap the converter