Classic Mustangs (Tech) Technical discussions about the Mustangs of yester-year.

bolt torque settings

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Old Mar 31, 2008 | 05:58 PM
  #1  
Aussie66Fastback's Avatar
Aussie66Fastback
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From: Australia
Default bolt torque settings

hi all

quick question

can anyone tell me the torque settings for
head bolts
rocker bolts (non roller, hydraulic)
inlet manifold bolts

for a 351C 2v, stock.

I had one guy tell me it doesnt matter for rocker and manifold and 100ft lbs for the head bolts. Just wanna be sure and get them even.

thanks
Old Mar 31, 2008 | 06:00 PM
  #2  
67t5ponycoupe's Avatar
67t5ponycoupe
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From: Colorado
Default RE: bolt torque settings

Half a turn before they break!! Haha!
Old Mar 31, 2008 | 06:02 PM
  #3  
67t5ponycoupe's Avatar
67t5ponycoupe
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Default RE: bolt torque settings

Let see if this works.






Fastener Type


Torque Spec.


Main cap bots
95-105 ft.-lbs.

Connecting rod bolts
40-45 ft.-lbs
45-50 ft.-lbs
for Boss 351C


Cylinder head bolts (follow factory torque sequence)
105 ft.-lbs.
125 ft.-lbs for
Boss 351C


Rocker arms (non-adjustable)
18-22 ft.-lbs.

5/16" Intake manifold bolts
21-25 ft.-lbs.

3/8" Intake manifold bolts
28-33 ft.-lbs.

Oil pump bolt
25 ft.-lbs.

Cam bolts
40-45 ft.-lbs.

Cam thrust plate bolts
9-12 ft.-lbs.

Harmonic damper bolt
70-90 ft.-lbs.

Flywheel/ flexplate bolts
75-85 ft.-lbs.

Pressure plate bolts
35 ft.-lbs.

Front cover bolts
12-18 ft.-lbs.
Old Mar 31, 2008 | 06:04 PM
  #4  
67t5ponycoupe's Avatar
67t5ponycoupe
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From: Colorado
Default RE: bolt torque settings

Ok that didn't work. Try this link http://www.classictruckshop.com/bt351C_Modified.php
Old Mar 31, 2008 | 06:05 PM
  #5  
67t5ponycoupe's Avatar
67t5ponycoupe
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Default RE: bolt torque settings

G-day mate!
Old Mar 31, 2008 | 06:07 PM
  #6  
ky's Avatar
ky
America ftw
 
Joined: Feb 2007
Posts: 2,261
From: ca
Default RE: bolt torque settings

wow some of those seem a little much and some seem not enough.

i know i wouldnt follow those specs. but whatever you do OP, just make sure u put some sort of oil/lube on them
Old Mar 31, 2008 | 06:17 PM
  #7  
67t5ponycoupe's Avatar
67t5ponycoupe
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Joined: Jan 2006
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From: Colorado
Default RE: bolt torque settings

Well help the guy out and find the specs if you don't like the ones that I found.
Old Mar 31, 2008 | 06:28 PM
  #8  
Aussie66Fastback's Avatar
Aussie66Fastback
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From: Australia
Default RE: bolt torque settings

18 -22 for the rocker bolts...would explain why my apprentice (mate) to the novice (me) snapped one off. When I looked at my torque wrench he had it set on 40.[:-]

Thanks 67t5 for the quick response.
true66 if you've got different ideas for rockers and manifold i'd be interested to hear.
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