Automatic Gearbox Shiftpoints (4Hp-14)

[Mad Professor 7]

Good day all.

 

Can anyone here tell me what are the shiftpoints on the 4HP-14 Automatic Gearbox.

 

Just standard driving, not with kickdown, at with the box at normal running temp.

 

Thanks for your time.

 

Best Regards.

[vinorak 4 1 Cars]

hope this help

[Mad Professor 7]

Thanks for that reply.

 

I am unable to read it, but I think I get what it is going on about.

 

It looks like the gear shiftpoints are based on road speed and not engine rpm.

 

Upshift

1-2: 18-19kph (11.1-11.8mph).

2-3: 37-43kph (23-26.7mph).

3-4: 62-68kph (38.5-42.2mph).

 

Downshift

4-3: 53-60kph (32.9-37.2mph).

3-2: 31-36kph (19.2-22.3mph).

2-1: 15-17kph (9.3-10.5mph).

 

So my next question is, does anyone know what the gear ratios are for the 4HP-14 Automatic Gearbox.

 

I am trying to work out aprox what RPM the gearbox changes gear.

 

I know it will only be a guess due to torque converter slippage.

 

Best Regards.

[Tesstuff 222]

1st - 2.790 - 6.52mph

2nd - 1.584 - 11.48mph

3rd - 1.157 - 15.72mph

4th - 0.855 - 21.28mph

 

Final drive - 3.69