busted tranny mounts

Reply Subscribe

Thread Tools

Search this Thread

Sep 9, 2001 | 06:56 PM

400m

Thread Starter

Senior User

Joined: Sep 2001

Posts: 210

Likes: 2

From: Lincoln, Rhode Island

busted tranny mounts

I am having trouble with tranny mounts in my truck, I keep breaking them. I have broken 4 mounts in 2 years. My truck is an 86 4x4 with a 6" lift. I also buit a 400 about 2 years ago that dynos out at about 500ft-lb of torque, this is conected to a 3 speed with overdrive trans. I also have a clutch from an f-600 in it. Does any one know were I can find a heavy duty enough mount? I have already tried summit, jegs etc.... I have also tried a solid mount and the vibrations are unbearable! can anybody help?

thanks 400m

Sep 9, 2001 | 08:17 PM

rocky

Elder User

Joined: Nov 1999

Posts: 684

Likes: 0

busted tranny mounts

Have you thought of making your own mount out of chain and angle iron? Back in the sixties, we did that because nothing better was available that would take the abuse.

Sep 9, 2001 | 10:28 PM

jwtaylor

Postmaster

Joined: Jun 2001

Posts: 4,496

Likes: 0

busted tranny mounts

I cannot answer your tranny question, but would like to ask you a question if you don't care. I noticed your truck is a 86 with a 400 what truck did you get the motor mounts from, I thought they only put the 400 in trucks up to 82? Wondering if other year motor mounts would work I am thinking of puting a 400 in a 95 f-150 to replace the inline. thank you for your time.

I have heard of wrapping a chain around the trans/crossmember also. Maybe someone could fabricate you something. Good luck though

Sep 9, 2001 | 10:40 PM

StrangeRanger

Posting Guru

Joined: Dec 1999

Posts: 1,903

Likes: 2

From: Copley, OH

busted tranny mounts

Sep 10, 2001 | 03:02 AM

Superdave

Posting Guru

Joined: Sep 1999

Posts: 2,297

Likes: 1

From: Indiana

busted tranny mounts

jwtaylor, The frame is the same on the 80-86 model so he has probably used the engine mount towers from an 80-82 with a 351M or 400 to put in his 86. He will have to explain the bellhousing though. I have seen your posts, I'm not sure if the frames were the same from 87 and up when they changed body styles. It would probably be easier to rebuild what you have as I think I have seen others mention to you. Buts thats just an opinion.

Superdave

94 Ford Aerostar XL 3.0L
82 Ford F250 4x4 XLT,400 CID,C-6 A/T,8700lb GVWR. Black & Silver

Sep 10, 2001 | 09:29 AM

RGAZ

Senior User

Joined: Aug 1999

Posts: 343

Likes: 0

busted tranny mounts

400m:
This is what I would do if I was you.

Get a catalog of universal-use suspension bushings from Prothane and Suspension Techniques. They both make high quality Polyurathane suspension bushings. Find a bushing in the catalog that could be modified to work on your truck. I'd try converting a engine mount to your tranny mount. Do a little custom welding work and fit it up and voila! You will have a nice solid mount with reduced vibration.

Maybe one of the manufacturers would design one for you. its worth a try.

Randy

Sep 10, 2001 | 08:57 PM

400m

Thread Starter

Senior User

Joined: Sep 2001

Posts: 210

Likes: 2

From: Lincoln, Rhode Island

busted tranny mounts

Thanks for the thoughts I am working on finding the materials to fabricate a mount. As for how I put that motor in my truck, I got the frame mounts out of my old 82 f-350. the bolted right in when I unbolted my old 300 i-6 mounts. The bellhousing is a big block bolt pattern. In the early 80's the bellhousing is seperate from the tranny so I unbolted the old one and bolted up the the new one. no fabrication needed. I removed the hydrolic clutch cylinders and bolted in the old style clutch linkage. I hardly drilled or cut or anything it was very easy. A 95 is another story the motor will bolt in if you get the mounts but you would need a tranny from a 460 to bolt up to it and the the rest of the truck. It can be done without major fabrication but it will take some effort and money. The 400 is a good torque motor I would love to know if you try it

thanks 400m