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#890947 - Sun Oct 21 2012 03:38 AM Help Identifing rear diff
fiftee3 Offline
Wrench Fetcher
Registered: Mon Oct 15 2012 02:51 PM
Posts: 99
Loc: Somerset County, NJ
Hello, First post here. Have a 53. Here is a pic of the rear which I cant seem to identify. Has two bumps at 11:00 and 7:00 on rear cover. Can't find numbers on it. From what I've read, its an open rear so it cant be original, correct?
Here are the photos...
http://fiftee6.com/fiftee6_015.htm

Thanks, Phil
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#890958 - Sun Oct 21 2012 04:44 AM Re: Help Identifing rear diff [Re: fiftee3]
tclederman Online
Registered: Tue Sep 18 2001 12:00 PM
Posts: 21994
Loc: Castleton-on-Hudson, NY
Phil,

A 1953 car and a 1953 1/2 ton truck would have had an enclosed driveshaft.

Larger 1953 trucks would have had an open rear end.

Maybe someone can ID what you have from that photo. Post any codes on the body of the rear end and maybe someone can help with those?
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#890959 - Sun Oct 21 2012 04:47 AM Re: Help Identifing rear diff [Re: fiftee3]
Kurt_51carryall Offline
Shop Shark
Registered: Sat Aug 27 2011 09:29 PM
Posts: 889
Loc: Raleigh,NC
Phil,

Is this a 1/2 ton or 3/4 ton? If 3/4 ton with the 8 lug wheels, It will be open drive shaft.

Kurt
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#890962 - Sun Oct 21 2012 04:50 AM Re: Help Identifing rear diff [Re: fiftee3]
fiftee3 Offline
Wrench Fetcher
Registered: Mon Oct 15 2012 02:51 PM
Posts: 99
Loc: Somerset County, NJ
it is 1/2 ton/3100. But maybe this is out of a 3/4 and changed to 6 lug? I'm just trying to figure out what year and what 10 bolt it is. Was also trying to figure ratio, but I guess I'll have to pull the cover and count teeth. Its leaking anyway!
_________________________
Phil
www.fiftee6.com

http://fiftee6.com/fiftee6_016.htm. (this is my pickup)
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#890964 - Sun Oct 21 2012 04:51 AM Re: Help Identifing rear diff [Re: fiftee3]
fiftee3 Offline
Wrench Fetcher
Registered: Mon Oct 15 2012 02:51 PM
Posts: 99
Loc: Somerset County, NJ
Can't seem to find codes either?
_________________________
Phil
www.fiftee6.com

http://fiftee6.com/fiftee6_016.htm. (this is my pickup)
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#891013 - Sun Oct 21 2012 09:25 AM Re: Help Identifing rear diff [Re: fiftee3]
LONGBOX55 Offline
Master Gabster
Registered: Mon May 08 2006 12:00 PM
Posts: 9247
Loc: DANVILLE IL
It's a '55-'62 HO33 from a 1/2 ton truck. There should be a code stamped on the passenger side of the 3rd member. That code will give the ratio, though most likely it will be a 3.90.
_________________________
Bill Burmeister
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#891058 - Sun Oct 21 2012 01:42 PM Re: Help Identifing rear diff [Re: fiftee3]
fiftee3 Offline
Wrench Fetcher
Registered: Mon Oct 15 2012 02:51 PM
Posts: 99
Loc: Somerset County, NJ
Thanks Bill,
Found numbers / 3707340 D2 Is this 3:90,s or 3:70,s?
And if 3:90,s what will be top speed on the 216 and max rpms approx.? Sorry, this dipper engine thing is all new to me! I met a guy at a carshow Saturday and he has a 235 from a 57 he'd let go for 300.00. But I actualy like the 216 now that I have it running!
Phil...
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#891061 - Sun Oct 21 2012 01:54 PM Re: Help Identifing rear diff [Re: fiftee3]
red58 Offline
Boltergeist
Registered: Sun Feb 03 2002 12:00 PM
Posts: 16180
Loc: north of the 49th
there was no 3.70, the standard was 3.90 with an optional 4.11 .... if you want the engine to last a long time, it'd be "comfortable" at 2500 and a max of 3000, and don't expect to be cruising at more than 55, especially with stock brakes

Bill
_________________________
"When we tug a single thing in nature we find it attached to the rest of the world" John Muir
"When we tug a single thing on an old truck, we find it falls off" me
Some TF series details & TF heater pics & Rust-a-holics Unanimous parking lot
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