Loaded 3.31 diff in to a boosted 3.73 PP car..

[kapiteinlangzaam]

I've boosted my 16 GTPP with a Roush P2 (625whp).

Currently its running the std. 3.73 Trac-Loc (not Torsen, its a EUDM car).

I want to go 3.31s.... can I just buy a loaded 3.31 and drop it straight in, or am I missing something? The current diff has 60k miles on it and is trashed.

Thanks for any insights

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[Whitewalkers550]

mechanically yes itll go right in and drive but speedo will be incorrect

 

[kapiteinlangzaam]

mechanically yes itll go right in and drive but speedo will be incorrect

Speedo I can fix with ForScan (if im not mistaken) or maybe even my NGauge.

Does anyone make a 3.31 gear kit? Weighing up the +/- of a rebuild or a replacement....

Thanks.

 

[Performance nut]

Speedo I can fix with ForScan (if im not mistaken) or maybe even my NGauge.

I corrected my speedo with my NGauge when I went from 3.15 to 3.73.

The only built Super8's I have seen are 3.15, 3.55, and 3.73. I definitely prefer the Torsen over Traction-loc which left me with 3.55 and 3.73.

If I were to do it again, I would rebuild. There are some really awesome gear options and traction options that would have been better for me.

 

[kapiteinlangzaam]

Cool, thanks for the info.

Rebuilding has the advantage of not needing to ship a diff pumpkin from the US to Europe.... I can't find any loaded 3.31s on this side of the Atlantic.

 

[K4fxd]

Does anyone make a 3.31 gear kit? Weighing up the +/- of a rebuild or a replacement....

You can get the gears but no one makes replacement clutches and steels that I know of.

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