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Motor mounts

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Old Jul 28, 2001 | 06:41 PM
  #1  
Fbird88's Avatar
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Joined: Jan 2001
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From: Jacksonville, FL, USA
Car: 1988 Firebird
Engine: GM Performance Parts 350 HO
Transmission: T56
Axle/Gears: :(
Motor mounts

Does anyone know the torque specs on the mount to crossmember bolts? How about the big long bolt that goes through the rubber part? I believe the 3 bolts that hold the bracket to the engine block are 80 ft-lbs; those are the only ones listed in the Haynes manual I have. Any information is greatly appreciated.
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Old Jul 28, 2001 | 10:16 PM
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Vader's Avatar
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Just use typical torque specs for the size fastener. Torque the bolt/nut to about 75-80% of peak torque and forget about it. Obviously, the table included is for steel threads only, and bolts threaded into cast materials or white metals should be regarded differently.

s and data for Drills. taps, and bolts is in this file:

Drills, Taps, and Bolts.pdf

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Old Jul 29, 2001 | 05:37 PM
  #3  
Fbird88's Avatar
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Joined: Jan 2001
Posts: 319
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From: Jacksonville, FL, USA
Car: 1988 Firebird
Engine: GM Performance Parts 350 HO
Transmission: T56
Axle/Gears: :(
Thanks for the info, Vader. I'm sure this chart will come in handy very often.
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