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Old 03-30-2012, 01:24 PM   #1
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bolt size chart

does anyone know of a write up or sticky that shows the bolt size for every part of the motor on a 5.0 HO?
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Old 03-30-2012, 11:42 PM   #2
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Valve cover bolts are 1/4-20, intake bolts, water pump and timing cover bolts are 5/16-18, header bolts are 3/8-16, motor mount and bellhousing bolts are 7/16-14.
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Old 03-31-2012, 12:29 AM   #3
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Quote:
Originally Posted by ddarkslayer View Post
does anyone know of a write up or sticky that shows the bolt size for every part of the motor on a 5.0 HO?
Oil pan- 1/4" -20 x 1" and 5/16" -18 x 1"
Oil pump- 3/8" -16 x 1"
Oil pick up tube 5/16" -18 x .75"
Main bearing caps 7/16" -14
Rod caps depend on the bolts you get
Cam bolt 3/8" -16 x 1.25" - 1.5"
Cam thrust plate 1/4" -20 x .75"
Timing cover/water pump 5/16" -18
Accessory drive is mostly 7/16" -14
Mechanical fuel pump 3/8" -16 x 1"
Water pump pulley 5/16" -24 x 1" - 1.25"
Crank pulley 3/8" -16 x 1" - 2"
Harmonic balancer ?" -??
Heads 7/16" -14
Pedestal rockers 5/16" -18 x 2"
Rocker studs 7/16"-14 in the head (stud length/top threads depends on setup)
Headers 3/8" -16 x .75" - 1"
Valve covers 1/4" -20 x .75" (depends on VC setup)
Intake 5/16" -18 x 2"
Tstat housing 5/16" -18 x 1" and 1.25"
Carb studs- 5/16" -18 to 5/16" -24 on top (length depends on spacer- stock is probably 2.25")
EFI upper intake 5/16" -18 (depends on intake)
EFI TB/EGR spacer 5/16" -18 (stock is probably around 3.5" in length)
EFI fuel rail 1/4" -20 x .75"
Dizzy hold down 5/16" -18 x .75" - 1" (depending on hold down)
EGR studs lower 5/16" -18 and top 3/8" -16 both 1" long
Flywheel/flex plate 7/16" -20 x .75" or 1" (manual uses 1")
Pressure plate ??
Bell housing to engine 7/16" -14 x 2"
Starter 3/8" -16 x 1.25" and 2"
Motor mount to engine 7/16" -14 x .75"
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Last edited by mustangguy87; 03-31-2012 at 01:07 PM. Reason: forgot header/ cam thrust plate
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Old 03-31-2012, 08:51 PM   #4
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TB/EGR is 5/16"-18
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Old 03-31-2012, 11:18 PM   #5
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I still can't believe Ford used wimpy 5/16" connecting rod bolts in these engines.

Talk about really cheaping out.
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