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Rear Suspension Torque Specs
#1
Looking for the torque specs for the front leaf spring eye bolt and the rear shackles.

73 Grandé H Code. Headman long tube headers, T-5 Transmission, 3.70 Traclok, Lowered 1" all around, Aussie 2v heads w/ 2.19 intake, 1.71 exhaust, screw in studs, full roller cam 608/612 lift 280/281 duration LSA 112, Quick Fuel 750 CFM double pumper, AirGap intake.

- Jason


[Image: 082-hot-rod-power-tour-2017-1970-1970s.jpg]
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#2
I'm not going to say that this is the perfect manner in which to determine torque specs for an application, but different hardware will dictate different torque ranges. The following chart isn't a bad reference to use when specific data is not available.


https://www.boltdepot.com/fastener-infor...orque.aspx

[Image: 1_01_07_15_8_53_18.png]

"I love my Hookers!" and "Get some Strange" probably have a different connotation to non automotive enthusiasts!
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#3
If I went by those specs wouldn't the suspension at the rear shackles bind?

73 Grandé H Code. Headman long tube headers, T-5 Transmission, 3.70 Traclok, Lowered 1" all around, Aussie 2v heads w/ 2.19 intake, 1.71 exhaust, screw in studs, full roller cam 608/612 lift 280/281 duration LSA 112, Quick Fuel 750 CFM double pumper, AirGap intake.

- Jason


[Image: 082-hot-rod-power-tour-2017-1970-1970s.jpg]
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#4
No. There is a steel sleeve and the rubber deflects. I can't remember the numbers, but I have removed a few sets and those numbers aren't out of line for what it took.

[Image: 1_01_07_15_8_53_18.png]

"I love my Hookers!" and "Get some Strange" probably have a different connotation to non automotive enthusiasts!
  Reply
#5
At the end of each section of the Ford shop manual, there is usually a list of torque specs by component. IIRC, in the Haynes manual, it's in the front of each section.

Regardless, have the car on all fours and settled before torquing to spec is always best practice for suspension work.


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#6
Yeah, I've been looking for my shop manuals but they got packed away during the move and I have not found them as of yet.

73 Grandé H Code. Headman long tube headers, T-5 Transmission, 3.70 Traclok, Lowered 1" all around, Aussie 2v heads w/ 2.19 intake, 1.71 exhaust, screw in studs, full roller cam 608/612 lift 280/281 duration LSA 112, Quick Fuel 750 CFM double pumper, AirGap intake.

- Jason


[Image: 082-hot-rod-power-tour-2017-1970-1970s.jpg]
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#7
Here's the specs from the 71 chassis manual


[Image: rearsusptorque.jpg]


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#8
perfect. thanks. I torqued them to 25 last night and is a much nicer ride.

73 Grandé H Code. Headman long tube headers, T-5 Transmission, 3.70 Traclok, Lowered 1" all around, Aussie 2v heads w/ 2.19 intake, 1.71 exhaust, screw in studs, full roller cam 608/612 lift 280/281 duration LSA 112, Quick Fuel 750 CFM double pumper, AirGap intake.

- Jason


[Image: 082-hot-rod-power-tour-2017-1970-1970s.jpg]
  Reply
#9
Humm slight difference. The Ford Chassis assembly manual says for the rear shackle bolts 14-22 ft. lbs. and for front 100- 140 ft. lbs..


When a man is in the woods and talks and no women are there is he still wrong??
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David
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