Drive Shaft bolt torque

[Pitt302]

Install the new Dynotech Driveshaft today, shear bolts 25 ft lbs, M 10 SHCS bolts into billet flange 25ft lbs as per there instructions, no torque value for the Transmission flange bolts in there instructions.So I phone a Ford dealers, he tells me 41 ft lbs,droped into another dealer just to check, he tells me 41 ft lbs.I ask him to print off the information, has 2013 Mustang at the top of the sheet,then 5.8L ( 4v) and a picture showing something that looks nothing like my Transmision output shaft flange.I have looked on many sites and most say 76 ft lbs,can someone please confirm the proper torque on these four bolts.I can't trust Ford.Thanks.

 

[302 Hi Pro]

Hi

I installed an AE Aluminum DS and I could only find the 2011 GT 5.0L spec on the transmission output shaft bolt torque and it was 76 ft lbs. I also torqued them first to 50 ft lbs then up to 76 ft lbs. Torque them in an "X" pattern.

Use Blue Loctite on the bolt threads.

Lots of techs here, so I'm sure someone will post the actual Ford Service Manual procedure for you. But you'll be fine.

Good luck,
Dave

 

[ArizonaBOSS]

http://iihs.net/fsm/?dir=751&viewfile=Driveshaft%20-%205.0L%20and%205.4L.pdf

41 at the diff end (were you using the original CV--just go with the dynotech supplied figures)

76 at the tranny end

 

[Pitt302]

Thanks,I torque them to 76 ft bs. but they did not move thread locker has set up. I suppose I would need to start over to do it properly, but they are definitly tight.Torque to 42 ft lbs first time .

 

[steveespo]

Back them out and retorque to 76 with locktite. There are a lot of vibrations with this car and things will come loose if not torqued correctly.
Steve

 

[Pitt302]

Did as you said,dont want to test the Blow Fish Shifter Bracket / Drive Shaft Loop any time soon,thanks for the help,I wil not consult Ford in the future.

 

[steveespo]

Glad we can help. Better safe than sorry. We risk enough everytime we hit the track.
Steve