3.45 Differential install

Drivetrain discussion including Transmission, Differential, Driveshaft, and related items.
s/c'd cav
Posts: 962
Joined: Mon May 30, 2016 8:12 am
Location: PHOENIX AZ

Re: 3.45 Differential install

Post by s/c'd cav » Wed Sep 25, 2019 7:41 pm

not sure whats so hard to find on the caprice bolts , they are in the diagram with the driveshaft

the driveshaft to coupler bolts are sold in a kit - 92267162

coupler to trans - bolt #92139225 , nut #92228333

coupler to diff - 92139104

User avatar
kevink
Posts: 440
Joined: Sun Aug 09, 2015 5:55 pm

Re: 3.45 Differential install

Post by kevink » Wed Sep 25, 2019 7:59 pm

s/c'd cav wrote:
Wed Sep 25, 2019 7:41 pm
not sure whats so hard to find on the caprice bolts , they are in the diagram with the driveshaft
the driveshaft to coupler bolts are sold in a kit - 92267162
That is the exact problem! Show me where you can buy JUST the nuts and bolts. They are only available as a kit that comes with the coupler. There is no number for just the prop shaft to coupler bolts and nuts which is what I have been saying the whole time. To get those bolts, you have to look up the Camaro numbers.
s/c'd cav wrote:
Wed Sep 25, 2019 7:41 pm
coupler to trans - bolt #92139225 , nut #92228333
Yes, they are shown in the photo on pg 7.
2011 9C3: 11.48 @118.

Capeasy
Posts: 93
Joined: Thu Aug 08, 2019 2:16 am
Location: Downey, CA.

Re: 3.45 Differential install

Post by Capeasy » Sun Nov 17, 2019 4:00 am

Did any of you guys experience the loss of the traction control feature after the diff swaps ? I did and it has me puzzled. :|
Walt (AKA:Capeasy) So. Cal.
2013 Caprice 9C1,Huron white, 99K, Blackbear tune, Spectra CAI, 3.45 Diff, deep trans pan. BlackWidow Venom exhaust,Granatelli oval cutouts, Doug
Thorley tri-Y headers, Pedders coilovers,Tower brace,

User avatar
kevink
Posts: 440
Joined: Sun Aug 09, 2015 5:55 pm

Re: 3.45 Differential install

Post by kevink » Wed Jun 17, 2020 7:46 pm

kevink wrote:
Fri Sep 06, 2019 4:10 pm
I'm not Maurice, but I used the Caprice coupler when I installed my Camaro diff. It mated to the Camaro diff exactly like it mated to the Caprice diff. There was no difference. I don't remember having to support the LCA with a jack. Actually, I had to force it down. This is really an easy bolt in swap. Just tear into it and you'll have no problems. Make sure you upgrade the diff bushings before you put it in. I also put steel clutches in mine, got rid of the Belleville washers, and added a Ford S-spring. I hammer it repeatedly every time I take it out and it's been great so far with drag radials on the street.
Alright, so a thousand miles later and my factory diff with steel clutches is shot. At the track, only one wheel would spin from time to time during the burnout. I recommend not wasting time on the steel clutches and going straight to an Eaton Truetrac. I'm taking advantage of the situation and swapping my 3.45s for 3.91s while I have it apart. Should have done that right away, too.
2011 9C3: 11.48 @118.

Post Reply