engine and transmission "rock"

[Willynch]

The engine and transmission "rock" towards the ground when the brake is depressed. Not where to start this one. Engine mounts?

Suggestions on how to debug this one would be appreciated

 

[burner31]

Start at the easy and obvious
So yes mounts

 

[Tom Wesenberg]

When you can nose dive the engine, that's a sign of good brakes.

Actually I've never heard of such a thing like this on a Model A.

Are you driving with the hood off, or just watching the shift lever?

 

[Mitch//pa]

make sure the body is tight to the frame

 

[J Franklin]

Yes, start with the mounts. Not much else to look at but a broken frame.

 

[Brentwood Bob]

center torque tube mount behind transmission.Especially if you have float a motors.
Bob