[Skooch62]

My Tudor has a turbo 400 and when I floor it ,the shift lever moves to neutral and the trans shifts into neutral. Other than that the trans works just fine. Shifts are smooth with no slipping. Motor mounts don’t look bad but hard to tell. Any ideas ?

 

[cozwurth]

Engine mounts is where I would start. Do you have column shift? Can you see the engine from the driver seat with the hood open? Put it in drive and power brake it a little and see if the engine moves.

Sent from my SM-A326U using Tapatalk

 

[1979Malibu]

Do you have a gated shifter? It needs to be adjusted so that the "gates" in the shifter match the detents in the transmission.

 

[Skooch62]

Engine mounts is where I would start. Do you have column shift? Can you see the engine from the driver seat with the hood open? Put it in drive and power brake it a little and see if the engine moves.

Sent from my SM-A326U using Tapatalk

It is a column shift and I’ll try the power brake and see if engine moves. Thanks

 

[Skooch62]

Do you have a gated shifter? It needs to be adjusted so that the "gates" in the shifter match the detents in the transmission.

It’s a column shift. Thanks

 

[Skooch62]

It is a column shift and I’ll try the power brake and see if engine moves. Thanks

Engine moved maybe 1/8 ” at the most

 

[cerial]

How tight are your shift linkage and body mounts?
I have flexed a body enough to pull the column shifter into Netural on several rides.

Cable linkage was the "easy" fix.

 

[Skooch62]

How tight are your shift linkage and body mounts?
I have flexed a body enough to pull the column shifter into Netural on several rides.

Cable linkage was the "easy" fix.

Like the cable idea. Was it a tough install ?

 

[cerial]

Most simply require you to remove your old linkage, remove a few transmission pan bolts to mount a bracket, then run a cable in between. The cable may need to do a 180 under some cars.
You simply install the cable then adjust the nut/lock nut so the shifter is in the correct position and you won't need to adjust it again for years.

Below is a link for visual refrence only. Your model may be diffrent. Read model specific reviews before buying so the install is a afternoon thing.

Amazon.com: Lokar (ACA-1804) 2" Aftermarket GM Column Shift Linkage : Automotive

Buy Lokar (ACA-1804) 2" Aftermarket GM Column Shift Linkage: Linkages - Amazon.com ✓ FREE DELIVERY possible on eligible purchases

www.amazon.com

 

[LATECH]

Sounds like a pressure leak across the valve body

 

[Skooch62]

Sounds like a pressure leak across the valve body

Would that also cause the column lever to go to neutral ? It seems like if I hold the lever in Drive , it doesn’t go into neutral.

 

[Crosley]

Look at shifter cable in mounting. Cable straped to body? frame? Something is moving, pulling - pushing the shifter cable.

Seen this on higher HP drag cars. Cable was pulled on hard launch. Put the glide between 1 & 2nd gear. Smoke the trans.

 

[Skooch62]

Look at shifter cable in mounting. Cable straped to body? frame? Something is moving, pulling - pushing the shifter cable.

Seen this on higher HP drag cars. Cable was pulled on hard launch. Put the glide between 1 & 2nd gear. Smoke the trans.

There is no cable. It’s a rod from the column right to the trans

 

[RWENUTS]

Tie the motor down on the drivers side front to the frame. Use a short chain and a turnbuckle.
see if that helps.
if it doesn’t then suspect body movement.

 

[LATECH]

Would that also cause the column lever to go to neutral ? It seems like if I hold the lever in Drive , it doesn’t go into neutral.

That is what I was thinking. I had a car years ago that had a similar valve body problem. The faster you go the harder it was to push the accelerator.Turns out the hydarulic pressure was bleeding off into the valve connected to the kickdown lever .

 

[Crosley]

There is no cable. It’s a rod from the column right to the trans

My apologies.. I saw all the cable discussion. Something is moving if the column shifter is moving under hard throttle. Perhaps a Go Pro type camera under the hood? A cell phone recording under the hood?

Many years ago , there were throttle - shifter problems on Mopar FWD mini vans in the rust belt areas of the country. Corrosion around the shift linkage on the trans. You would floor the throttle and the shifter would move caused by corrosion on the throttle valve linkage to the transmission.

 

[farna]

If the pressure bleed-off in the trans actually moves the shift valve inside the trans, the shift lever on the outside of the trans would move and the column shifter would move also. That said, I suspect either bad engine or trans mounts. Check both of those. Could be body/frame flex as well, or rather combined with mount movement. A cable would solve any movement issues.

 

[Skooch62]

If the pressure bleed-off in the trans actually moves the shift valve inside the trans, the shift lever on the outside of the trans would move and the column shifter would move also. That said, I suspect either bad engine or trans mounts. Check both of those. Could be body/frame flex as well, or rather combined with mount movement. A cable would solve any movement issues.

I will check mounts and have ordered a floor mount shifter with cable