1997 - 2003 F-150

9.75 rear end swap w/ 4.56s complete!

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Old Apr 4, 2010 | 06:36 PM
  #16  
doug435's Avatar
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From: san antonio Texas
^^^ i wanna know what he said how are they ? and how about at 40mph how is the accel. dose it have to down shift to get power or is it there ?
 
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Old Apr 4, 2010 | 08:24 PM
  #17  
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From: Gainesville/Orlando, FL
ReelWork, I changed the diff fluid and added two bottles of friction modifier but it hasn't gone away completely. I can't feel it as much as before but I can still hear it at times. I'll check the ebrake cable, I was going to check the brakes and see if they were the culprit when I changed the fluid but I ran outa time. So far, I love the 4.56s. Like b2therad said...I can burn my 35s when I want to now .

str8t six, doug and mrx, I havn't gotten on the open highway but I have gotten it up to around 80. Theres a considerable difference especially at highway speeds, no more immediate downshifting to pass other cars. I can't really comment on exact RPMs or power at certain speeds because my speedo is off, but I THINK the rpms at 65 are about 2k maybe more, maybe less. Honestly, if most of your driving is in town, I'd go 4.56s without a doubt. As for the fuse, I hadn't really thought about that but I guess it could work as long as it doesn't affect anything else.

Also talked to the guy who sold me the axle. He thinks the noise/vibration is probably the clutch packs in the LS because he put them in so tight. It makes sense, its just getting annoying that it won't go away. And as for the ABS problem I just switched over the sensor from my 8.8 and no more ABS light.
 
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Old Apr 4, 2010 | 09:07 PM
  #18  
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From: Rocklin, CA
ok cool, thanks for the info!
 

Last edited by mxr181; Apr 4, 2010 at 09:09 PM.
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Old Apr 5, 2010 | 10:32 PM
  #19  
str8t six's Avatar
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From: swamps of la
The fuse worked on my freinds s10 blazer do I figured it might work for our trucks.
 
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Old Apr 5, 2010 | 11:41 PM
  #20  
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From: Concordia, MO
I had some red electrical tape and just taped an X over the switch.
 
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