Finetuning questions - do I need a high-stall torque converter ?

Great - thanks for the quick and many replies!

Here some additional info:

Heads are from a 1970 318 - compression 10:1
Fully ported with 1.88" Inlet valves and 1.5" Exhaust valves.
Pistons are flat top.

Cam is calibrated corresponding to the ISL from Hughes.

Ignition is 12° before dead center at Idle
and 36° before dead center all in.

Exhaust is without crossover.

Elevation is at sea level.
I have no scoop - so it does not always get perfect cold air, specially in the city after lot of idling.

Max. hp recorded at around 5200rpm - Torque was not measured.

Will check at next opportunity if valve secondary fully opens when I try to do a burnout.

Quarter mile details:
---------------------------
60ft 2.247sec
330ft 6.029 sec
1/8 mile 9.141sec
1/8 mile speed 79.6 mph
1000ft 11.814 sec
1/4 mile time 14.109 sec
1/4 mile speed 97,9 mph

Shifted with automatic - shift point around 5000rpm


Second pass, manually shifted around 5500, had quite a lot of wheel spin at launch.....
------------------------------------------------

60ft 2.380 sec
330ft 6.205 sec
1/8 mile 9.307 sec
1/8 mile speed 79.75 mph
1000ft 11.95 sec
1/4 mile time 14.203 sec
1/4 mile speed 100.1 mph