Rear Float-A-Motor Replacement Pads

J

Jamie86

Member
My dad and I have been installing a rebuilt engine and F150 transmission conversion. We both noticed that the replacement pads are different
material and dimensions, than the original ones. The original ones are made of rubber, not neoprene. The original ones measure 2-1/4" in diameter and 1"
thick. The neoprene measure 2" in diameter and 7/8" thick. Has anyone else
noticed the difference ? Will the differences have any affect on the motor ?
 
Jamie. Seems no one has notice this, i would call the dist and ask them. It could be new and better. Let us know what you find out.
 
The difference in thickness WILL have an affect on the motor.The 7/8" vs the 1" thickness will let the rear of the motor sit 1/4" lower than the old original style FAM rubber pads. That in itself probably will not hurt the motor, but the ****** and UJoint cover will sit even lower, then it may drag on the brake crossmember. Add to that the extra weight of the F150 transmissionand now you have the UJoint cover dragging on the brake crossover. Not a good thing.

Also the extra weight will squish the pads over time and the engine will settle even more. Keep a watch on the "squisshing" and as needed change the pads. I am not a big fan of FAM, especially coupled with the heavy F150 transmission.
 
Put them in,then make sure everything lines up like it should.If the crank fits in the ratchet without binding,and everything in the rear clears,I would go.Who's to say the rubbers you took out were the correct size?They may have been wrong and the ones you have now are correct.Or,both might be wrong.With aftermarket add-ons you have to do your own engineering and evaluation of what you want to use or not.I like original mounts,but I have a couple of cars with floaters and have had zero problems.My pickup had them on it when parked in 1954 so when I fired it up in 1972 I just kept using them.I changed the pads once,but never measured them.They are at least 30 years old now too.
 
You must log in or register to reply here.
Back
Top