4L80E Transgo -3 FMVB line pressure ?
 

So I installed my 4L80E after installing the kit, with the vacuum modulator disconnected I have the following line pressure.

Park: 150
Reverse: 250
4th: 100
1st: 150

This is with the driveshaft removed so the transmission can freewheel.

No strange noises, no leaks, no whining (at least nothing I can hear)

Comments? I was expecting more line pressure in 1st when the vacuum modulator was unhooked. Tomorrow I will put a mighty-vac on it and see if it responds at all to vacuum.

Also, with the stock pan & stock converter, how mush fluid from from totally dry? My car can't use a stock dipstick because the engine is set back too far.

Thanks
Craig

Craig

yes you should have 200-230 at least with vaccum unhooked

In park/Neutral drive you will see between 175-200. You may need to get the rpms up a little to get the pump speed up.