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72FordGTS View Drop Down
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    Posted: 04-September-2018 at 2:11AM
It looks like I didn't get a set of oil pump bolts with my engine.  Does anyone know what size/length are used for a 351C or 400 oil pump?  Are any washers required?  I was just going to pick up so me grade 8 bolts if I can get the proper size.
 
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Vince

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Post Options Post Options   Thanks (0) Thanks(0)   Quote Rockatansky Quote  Post ReplyReply Direct Link To This Post Posted: 04-September-2018 at 8:21AM
the Tom Monroe book says they're 3/8"-16 but doesn't give a length,


text states that the bolts have lockwashers and the TQ is 25 ft-lbs, i also found 22-32 ft-lbs


grade 5 should be plenty, at 25 ft-lbs you're not going to get yield on a grade 8






Edited by Rockatansky - 04-September-2018 at 8:36AM
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Post Options Post Options   Thanks (0) Thanks(0)   Quote 72FordGTS Quote  Post ReplyReply Direct Link To This Post Posted: 04-September-2018 at 2:48PM
Thanks Rock.  I think I found a listing for the 351C - 3/8"-16 x 1 1/4".   It looks like its the same size as the 351W.  Weird thing is they have separate part number listings.
 
351W  20428-S8 (B82)
351C   359266-S8 (BB157)
 
So I think I should be good to get some quality fasteners from a part store on this?  Any advice on the type of lock washer, or just a standard split lock?  The ford part number for the washer is 34807-S8, which is a split lock.


Edited by 72FordGTS - 07-September-2018 at 2:25PM
Vince

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Post Options Post Options   Thanks (0) Thanks(0)   Quote Rockatansky Quote  Post ReplyReply Direct Link To This Post Posted: 05-September-2018 at 7:23AM
local source should be fine, pretty sure they're split lock which mech geeks say are the worst but i wouldn't want any of the semi-permanent ratchet teeth designs on this simple job
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Post Options Post Options   Thanks (0) Thanks(0)   Quote 72FordGTS Quote  Post ReplyReply Direct Link To This Post Posted: 06-September-2018 at 12:14PM
I did some reading on split lock washers. Interesting, some say they are worse than regular washers. Maybe I will use locktite to be on the safe side.
Vince

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Post Options Post Options   Thanks (0) Thanks(0)   Quote californiajohnny Quote  Post ReplyReply Direct Link To This Post Posted: 06-September-2018 at 1:53PM
lock-tite is not a bad idea Wink
JOHN
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