can anyone tell me the part numbers of all the differant shims needed to put the 4.11 gears in a 99 lighting or what kind of shims they are.jim at us gear said the rearend housing is differant in the lightning than the expedition.he said i needed .180 thick shims out of a dana and some kinda pinion shims that you grind the **** off of .i dont want to get it tore down then have to spend for ever looking for shims.

 

Don't know the size, just told the shop that was putting them on that it needed some shims and they would need to figure out what size. Apparently it is not too hard for the pro's to figure this out. Mine have been working fine ever since.

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2000 White Lightning
JDM custom chip
JDM 90mm Mass Air
JDM lower pulley
JDM aluminum drive shaft
4.10 gears
et 1/4 mi 13.14 (before JDM parts, after JDM ???)
Retrax tannaux cover
Bedrug

'65 Mustang with 347 stroker
'67 Corvette, ZZ502/502

 

If you order the Ford Motorsport gears they come with shim pkgs. My 4.10s did.
I just recieved the 3.73s, from Ford Motorsports,and they came with them along with pinion nut and collar.
Order the shim pkg from a dealer for the 9.75 Lightning rear.
Question: Gears are for a Navigator 9.75. Why aren't the shims the same?
Dn


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PSP TOTALLY MODIFIED
Best ET 12.57
Best MPH 107.89
Best 60 ft 1.72
So-Far!!
Man, I LOVE These PSP PRODUCTS!!!
(Thanks Sal!!!!)

 

jim said he thought the case for the lightning may have been machined a little differant and something to do with the bearing location.anyway,he gave me the no at pyle brothers and said give them a call and they could give me more imformation.