Low speed torque and driveability ?

360 stock 2bbl to 4bbl headers and xe262h

Torque
RPM123456
2000357.3376.9346.7356.8349.6
2200350.7370.9347.9351.3345.8
2400349.8367.5355.9353.1350.4
2600351.5367.1359.5352.6361.0353.8
2800358.8374.1367.1357.7359.7361.0
3000370.1388.0373.6363.2364.1371.9
3100371.7390.6375.9366.0369.3375.6
3200371.2390.7376.0368.7375.7381.6
3300371.3390.3377.1368.8381.0389.6
3400367.8388.9374.1368.7386.3396.1
3600361.2381.7369.2367.0390.8400.1
3700357.7375.0367.1363.3391.8400.6
3800349.9370.4363.6358.7386.9398.0
4000342.8357.8354.9348.3380.3394.0
4200331.0346.3344.9337.6383.1389.5
4400316.4329.1329.0325.1378.1385.5
4600295.7311.0313.3310.5368.2375.6
4800286.5293.8299.8290.7355.1363.3
5000270.9278.7282.0272.4342.7351.9
5200330.3337.8
5400311.8321.7