5r100 with 4.5 vt275 or 4r100 - PowerStrokeNation : Ford Powerstroke Diesel Forum
 
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post #1 of 5 (permalink) Old 04-12-2012, 02:55 PM Thread Starter
Jack Ken
 
Join Date: Apr 2010
Location: Huntington, IN
Posts: 215
5r100 with 4.5 vt275 or 4r100

Im looking at swapping in a 4.5/vt275 into my expedition. The 4.5 comes with a 5r100 and it looks like the back has a 4wd tailhousing with a flange on it. So Im wondering if its like the 4r100 and has to be disasambled to change the output shaft and do the 5r and 4r share the same xcase bolt pattern? And next I was thinking of using the 5r instead since I wont need a convertor and a pcs for my trans, it would be more "drop in and go". Or would you guys recomemend the 4r instead? How much longer is the 5r over the 4r? I think Ill have to push the engine forward a couple inches anyway to clear the down pipe. Just trying to figure some of this out ahead of time. Thanks

2003 Exursion 7.3 diesel exhaust, intake, ts chip, banks exhaust housing, big head actuator all sittin on 20s w/ 35s.
1989 F350 460 propane, 4inch lift 39.5s
1988 bronco ii 2.3 turbo motor on propane
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post #2 of 5 (permalink) Old 04-12-2012, 04:20 PM
Former Ford Trans Engr.
 
Mark Kovalsky's Avatar
 
Join Date: Aug 2007
Location: SE Florida
Posts: 3,029
Re: 5r100 with 4.5 vt275 or 4r100

You have to disassemble the whole trans to change the output shaft. Most of the 4x2 trucks with a 5R110 use a flange. The driveshaft has a slip joint in the middle.

The 5R is a bit longer, I don't remember the amount. It's a few inches.

I think the swap would be easier to keep the 5R110, plus it will perform better than the 4R100.

Mark
Former Ford Automatic Transmission Engineer

“The good thing about science is that it's true whether or not you believe in it.” ― Neil deGrasse Tyson
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post #3 of 5 (permalink) Old 04-12-2012, 04:47 PM Thread Starter
Jack Ken
 
Join Date: Apr 2010
Location: Huntington, IN
Posts: 215
Re: 5r100 with 4.5 vt275 or 4r100

Thanks Mark, I was hoping you would chime in. Do you know if the LCFs have the same internals in the trans as the 6.0 or are they diff. Just wondering if I need a mild performance built trans or just leave it stock or use 6.0 internals as the most horse Ill have would be around the 300 horse mark.

2003 Exursion 7.3 diesel exhaust, intake, ts chip, banks exhaust housing, big head actuator all sittin on 20s w/ 35s.
1989 F350 460 propane, 4inch lift 39.5s
1988 bronco ii 2.3 turbo motor on propane
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post #4 of 5 (permalink) Old 04-12-2012, 11:10 PM
Former Ford Trans Engr.
 
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Join Date: Aug 2007
Location: SE Florida
Posts: 3,029
Re: 5r100 with 4.5 vt275 or 4r100

The LCF uses exactly the same parts as the 6.0L.

Mark
Former Ford Automatic Transmission Engineer

“The good thing about science is that it's true whether or not you believe in it.” ― Neil deGrasse Tyson
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post #5 of 5 (permalink) Old 04-13-2012, 05:07 PM Thread Starter
Jack Ken
 
Join Date: Apr 2010
Location: Huntington, IN
Posts: 215
Re: 5r100 with 4.5 vt275 or 4r100

Thanks. Thats good news, saves me even more money then.

2003 Exursion 7.3 diesel exhaust, intake, ts chip, banks exhaust housing, big head actuator all sittin on 20s w/ 35s.
1989 F350 460 propane, 4inch lift 39.5s
1988 bronco ii 2.3 turbo motor on propane
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