Travose21

iTrader: (22)

Me and my friend did a th400 swap from a 4l60e and now it have like a slight whine sound like it have a blower on it. is this normal or what let me know what we have to.

john kilgore

buy yourself a filter from a allison 540 trans and replace the stock one. do not drive it before you change the filter. good luck jk

FLT

iTrader: (1)

When do you hear the noise?

Travose21

iTrader: (22)

he heres it when reving the motor and and take off in 1st then as soon as he shift it stop then it does i again. could it be the filter

revtime

iTrader: (1)

I don't have any answers for you but you would be wise to listen to John Kilgore. He is one of the best tranny builders in the United States.
Like Rossler I have heard nothing but praise for his transmissions.

01zbear

iTrader: (1)

My Th 400 started doing this the last time I put it back in my car. When I took it out it did not do it but now it does. Exact same noise your talking about. It sounds cool but I know somthing has got to be screwed up. Oh well I need one with a tranny brake anyway.

FLT

iTrader: (1)

With that being said it is more than likely a pump noise. As JK said a filter with a screen in it will help to remove this noise. The idea behind it is that a filter with a metal screen will have less of a restriction then a paper style filter. It is worth a try. I usually run these filters on t-brake or manual units. Give it a shot and let us know what happens.

john kilgore

the noise you are hearing is the filter not letting oil through and air is being sucked into the pump above the oil level. the noise is the air bobbles popping in the pump gears. l have found that some of the plastic pick up tubes are undersized at the "O" ring end and will not seal even with two rings.should be .750 od. if you can find an after market steel one you will be way ahead. good luck jk

Travose21

iTrader: (22)

thanks for all the info

BOA279

iTrader: (1)

Im not 100% on a th400 but for the 4l60e you will get a whine from the pump if measurements are not correct. With the converter installed (but not bolted to flywheel) and tranny mounted to engine...push the converter toward the tranny and measure the gap between the verter pads and flywheel. The gap should be 1/8 to 3/16. If its larger than that, equal size washers must be installed to bring the gap within tolerance. If the gap is to great and verter is installed, premature pump wear/damage is possible and a whine might be heard. Not sure what the tolerances are for a th400 but I'm sure there is a gap measurement of some kind.

bowtierodder

iTrader: (3)

will a tranny with this whinning noise be damaged, or can i just live with it

BTLFEDSS

iTrader: (12)

Any updates on this
BTLFEDSS

98Camarod

iTrader: (43)

Does anyone have a part number for the metal screen filters?