Thread: 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?

Take the one out the trans you are pulling the gears from. I suspect it's black.

The scoop is slightly longer on one of them. It's just to accomodate the size of the gear in the back.

Use the one that comes out with the other gearset.

ok will do.

so what i highlighted in red is the sungear?

Part 866, it's a reluctor tooth ring

http://www.automaticchoice.com/uploa...ogue/4t65e.pdf

The sungear is oddly not labeled in the diagram. Use the box labeled J and it's between 863 and 664

If you need any other info/trans stuff, likely it's in here.
http://www.grandprixforums.net/threa...ght=trans+info

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

James..

Do you mean
37/33
35/35
33/37

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-Ci...-Car/38251826/
http://www.townsedge.com/Details.cfm...ntain-Lake-MN/
http://www.harborcars.com/inventory/...HJ5EM4BU106211
http://www.thecarconnection.com/car-...ncoln_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)

Ahhh ok. Getting confused w/o enough coffee

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.

Not going to do a top speed run with the tall gearing before it goes?

no, might go to the track just to see the difference 3:29's will make.....maybe.

so really considering buying 3:69 as i got the money in my wallet just sitting there lol.
so i just buy this http://zzperformance.com/3800/transm...rsion-kit.html and get it installed and retuned?
I been reading and some people have issues shift at WOT after... is that a tune issue, or do i need to change out this"reluctor wheel"?

want no hiccups if i go threw with this.

hey Bill(or anyone)do i need any news gaskets when swapping gears?