• The site migration is complete! Hopefully everything transferred properly from the multiple decades old software we were using before. If you notice any issues please let me know, thanks! Also, I'm still working on things like chatbox, etc so hopefully those will be working in the next week or two.

did i make my car even slower??

awesome ill print this out and give to my my mechanic, gonna do this in the inlaws garage.
what do i replace the white lube scoop with? just a new one?
 




the black scoop is the longest for the small driven gear of the 2.93 gear sets.
the white/tan is the 3.29 scoop.

i believe the 3.69 chain sets had a pink scoop. which is nearly the same as a tan/white with the tip broken off
 


so counted the teeth on the sungear and it has 34 teeth! so all i need do is take my 35/35 sprocket and chain from the impala trans and swap into the buick trans and throw the 3:29 diff in! then get retuned
 
Wait..

The diff and sungear are paired. You should swap both together or never at all. I thought we did the math and came up with wrong drive/driven gearing (although no tech info seems to show this possible in an NA trans that year) and the 3.05 diff?
 
what i have in the 2011 buick tran is the 3:05 diff AND 3:05 sungear from the old impala trans

what i have on my shelf is the buick diff and sungear, which is 3:29.

i just got done researching many sites, and the 2011 buick with the 3.9l has a 2:93 final drive ratio.
http://diffeelincoln.com/Oklahoma-City/For-Sale/Used/Buick/Lucerne/2011-CXL-Premium-Car/38251826/
http://www.townsedge.com/Details.cfm/523402933/2011-Buick-Lucerne/Mountain-Lake-MN/
http://www.harborcars.com/inventory/Used-Vehicle-Detail-Page.aspx?vin=1G4HJ5EM4BU106211
http://www.thecarconnection.com/car-compare-results/buick_lucerne_2011-vs-lincoln_mks_2011

All 4 sites are saying so.

So 3.29 diff on 37/33 gears = 2.93

but i threw in my 3.05 diff on 37/33 gears = 2.72 my current ratio(confirmend by overkill)
 
ive been confused ever since we did this trans swap lmao, I have learned so much on these transmissions in the last few weeks lols.
so i guess there is a 2:93 trans that went into a n/a car and just my luck i would grab it lol.
thanks for all your help bill. when the all the gears get swapped and tune is done ill update you on success or failure lol.
 


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