03-27-2015, 06:32 AM | #21 |
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Re: Rear end swap
X2 what JWL said
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John "Never give up on what you really want to do. The person with big dreams is more powerful than one with all the facts". Albert Einstein |
03-27-2015, 08:06 AM | #22 |
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Re: Rear end swap
Get a Mitchell OD
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03-27-2015, 11:07 AM | #23 |
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Re: Rear end swap
I'm told the numbers 9 34 are stamped equaling a 3:78.......
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Tim Carlig |
03-27-2015, 11:16 AM | #24 |
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Re: Rear end swap
9 / 34 does equate to 3.78, BUT......that does not guarantee that the originals are STILL in there. Just FWIW !
You can pull the fill plug, mark one of the ring gear teeth, and rotate the ring ONCE while counting the teeth. DD |
03-27-2015, 11:35 AM | #25 |
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Re: Rear end swap
How many teeth then?
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Tim Carlig |
03-27-2015, 11:48 AM | #26 |
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Re: Rear end swap
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If it counts 37, it is a 4.11. If it counts 39, it is a 3.54. DD |
03-27-2015, 04:03 PM | #27 |
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Re: Rear end swap
Scooder is right about the carrier bearings, 37 up are all the same but the 35/6 are different from the later. Get the cups out of the later housings and put in your 36 housings.
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03-27-2015, 04:35 PM | #28 |
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Re: Rear end swap
Jim,
Just to clear ambiguity, are you saying you can use a 37 up center banjo complete, in pre 37 axle casings, if you fit the bearing cups (the part that the goes in the differential end of the bell)? I kinda thought you'd swap the pre 37 diff carrier bearings onto the 37 up diff carrier, to make it go together. Would either way achieve the same end product? Asking purely for clarity for the OP and anyone else thinking of doing this. I have a small pile of leftover V8 rear parts tucked away, and have a feeling some is pre 37 and some post 37. So will file this thread for future reference. Not bothered about axles and spiders, cus I know I have both variants complete in diff carriers. Many thanks, Martin. |
03-28-2015, 06:23 AM | #29 |
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Re: Rear end swap
I am not sure Martin. Know the width of the center housing is the same and do remember swaping stuff back and forth using 36 outer housings and that is why changing the cups makes sense. If the carrier assy. is the same width on the late and early and bearing IDs are the same, you could go the way you descriged.
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03-28-2015, 06:47 AM | #30 |
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Re: Rear end swap
Thanks Jim,
When I get to deal with this, I'll report my findings. Martin. |
03-28-2015, 11:50 AM | #31 |
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Re: Rear end swap
Coopman.....on the teeth count; are you sure 39 is a 3:54? The math doesn't work out if the numbers are stamped 9 39. The other two ratios compute.
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03-28-2015, 12:12 PM | #32 | |
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Re: Rear end swap
Quote:
39/11= 3.54, 37/9=4.11, and 34/9=3.78. How many teeth are you actually counting on the ring gear that's in the rear in question here??
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John "Never give up on what you really want to do. The person with big dreams is more powerful than one with all the facts". Albert Einstein Last edited by JM 35 Sedan; 03-28-2015 at 12:28 PM. |
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03-28-2015, 12:58 PM | #33 |
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Re: Rear end swap
John: haven't counted yet, relayed info to the seller (not the formula, just asked for the count).
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Tim Carlig |
03-28-2015, 01:24 PM | #34 | |
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Re: Rear end swap
Quote:
http://www.fordbarn.com/forum/showth...ear+gear+ratio
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John "Never give up on what you really want to do. The person with big dreams is more powerful than one with all the facts". Albert Einstein |
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04-14-2015, 10:40 AM | #35 |
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Re: Rear end swap
I can't tell what year I just picked up using photos shown in the link from post #2, any help would be appreciated.
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Tim Carlig |
04-14-2015, 10:59 AM | #36 |
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Re: Rear end swap
That appears to be a '37-'40 bell, as the shackle hanger boss is BELOW the arm rather than inboard as on '41-'48s. That shock bracket is not factory. DD
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