![]() |
Register or Log In To remove these advertisements. |
|
|
![]() |
|
Thread Tools | Display Modes |
|
![]() |
#1 |
Its Topless Season!!!!
Join Date: Jul 2007
Location: fort worth, tx
Posts: 1,657
|
Caprice (9c1) rear disk brakes....
I bought a rearend of a 1995 caprice a couple of months ago and was wondering if anyone has one installed on their truck. The reason I bought it was for the 5lug conversion and rear disks and i believe it has positrac...not sure. Here are some pics
|
![]() |
![]() |
![]() |
#2 |
Registered User
Join Date: Oct 2010
Location: Largo Florida
Posts: 632
|
Re: Caprice (9c1) rear disk brakes....
Yes it will be a posi (disc brake rear axles on cars are posi). The bolt pattern will be correct for 5 on 5 conversion, the B-body GM cars after 1970 are the same lug pattern as the 71 and up 5 lug trucks. The width will more likely be the biggest issue if you want to install the whole rear axle. A 9C1 Caprice is also more likely to have 3.42 gears, 3.08 were in police cars too.
__________________
Lifes journey is not to arrive at the gate well preserved, it is to slide in sideways all used up and wore out yelling.....God what'a ride! Where patience fails, force prevails Stapp's Ironical Paradox "The universal aptitude for ineptitude makes any human accomplishment an incredible miracle." |
![]() |
![]() |
![]() |
#3 |
its all about the +6 inches
Join Date: Jan 2001
Location: Hilliard Ohio
Posts: 2,693
|
Re: Caprice (9c1) rear disk brakes....
that rear is probably worth more to an SS Impalla guy than disks are worth on the back of an empty pickup
|
![]() |
![]() |
![]() |
#4 |
Junior Member
Join Date: Jan 2007
Location: Land O' Lakes Florida
Posts: 103
|
Re: Caprice (9c1) rear disk brakes....
I do not know much...but this one I know! 9C1 was Police package option, and if it came out of a Caprice it is about 3/4 of an inch NARROWER than an Impala SS 1996 back! Trust me they are different! Most will not notice that small a difference but it is there!
__________________
Always do the right thing! This will gratify some and astonish the rest. (Mark Twain) Being older just means I got to see all the cool bands! ![]() ![]() 1970 Chevrolet CST/30 BB Longhorn |
![]() |
![]() |
![]() |
#5 |
Its Topless Season!!!!
Join Date: Jul 2007
Location: fort worth, tx
Posts: 1,657
|
Re: Caprice (9c1) rear disk brakes....
Thx for the replies guys...can someone tell me what an early 67-70 and 71-71 stock rearends measure?? I think this one measure 62in but i need to double check.
Posted via Mobile Device |
![]() |
![]() |
![]() |
#6 |
Senior Member
![]() Join Date: Aug 2008
Location: Cedar Park, Texas
Posts: 7,496
|
Re: Caprice (9c1) rear disk brakes....
I have a wrecked 94 Caprice 9C1 that I bought from my brother for the recently rebuilt LT1/ 4L60E. I am using the engine/ tran in my 55 1st series on an S10 chassis. I haven't decided if I want to use the rear axle in my 72 swb step, or sell it.
|
![]() |
![]() |
![]() |
#7 |
Registered User
Join Date: Jan 2011
Location: Falcon \ Colorado
Posts: 193
|
Re: Caprice (9c1) rear disk brakes....
not sure of the exact measurement numbers but 63-69 are about 1 inch narrower than the 70-72's !
__________________
![]() ![]() ![]() 67 c10 swb build in progress 70 c10 lwb driver pending parts for drastic overhaul 70 c20 lwb parts truck for above mentioned drastic overhaul 71 k20 lwb building for off road use and towing |
![]() |
![]() |
![]() |
#8 |
Registered User
![]() Join Date: Apr 2010
Location: Sutton, WV
Posts: 340
|
Re: Caprice (9c1) rear disk brakes....
My 67 LWB is 57" from where square plates mount to axle tubes.
I---o---I ^ THIS MEASUREMENT |
![]() |
![]() |
![]() |
#9 |
Its Topless Season!!!!
Join Date: Jul 2007
Location: fort worth, tx
Posts: 1,657
|
Re: Caprice (9c1) rear disk brakes....
So you figure +2.5in on each side of the rotor adds up to 62in mounting plate to mounting plate...am i measuring this correct??
|
![]() |
![]() |
![]() |
#10 |
Registered User
Join Date: Jan 2011
Location: Falcon \ Colorado
Posts: 193
|
Re: Caprice (9c1) rear disk brakes....
Just measured my axle out of a 69 c10 and it was 54 inches backing plate to backing plate and the 70 and up axles are wider by like an inch or two.
__________________
![]() ![]() ![]() 67 c10 swb build in progress 70 c10 lwb driver pending parts for drastic overhaul 70 c20 lwb parts truck for above mentioned drastic overhaul 71 k20 lwb building for off road use and towing |
![]() |
![]() |
![]() |
#11 |
Its Topless Season!!!!
Join Date: Jul 2007
Location: fort worth, tx
Posts: 1,657
|
Re: Caprice (9c1) rear disk brakes....
Ok..I measured the Caprice rearend and its 62in from mounting flange to mounting flange...i really wanted to use the entire axle but is the 62in width too big??
|
![]() |
![]() |
![]() |
#12 |
Registered User
Join Date: Mar 2010
Location: Erie
Posts: 4
|
Re: Caprice (9c1) rear disk brakes....
i just measured my '72 and its 63 3/4 wms to wms
|
![]() |
![]() |
![]() |
#13 |
Its Topless Season!!!!
Join Date: Jul 2007
Location: fort worth, tx
Posts: 1,657
|
Re: Caprice (9c1) rear disk brakes....
Thx Rawkus...is urs the stock rearend from ur 72??
Posted via Mobile Device |
![]() |
![]() |
![]() |
#14 |
toys'r'us
Join Date: Nov 2010
Location: Penticton, BC, Canada
Posts: 347
|
Re: Caprice (9c1) rear disk brakes....
the 9c1 has 12" front disc. whats what size are yours. you will get better braking by going an inch bigger on the front disc than going from a drum to a disc on the back. when u hit brakes the weight goes forward and the front brakes do all the work. An out of ballance proportioning will lock up the rear drums with ease. The rear pads on my f150 are tiny. Ive also noticed rear discs make your wheels dirtier with brake dust
on the plus side rear discs look waaaaay better when visible. if your running a bigger open rim go with the discs for sure. The 9c1 is a good rear end. I was going to put one in my 79 caprice but now that i know better im just putting in the swaybars from one. 9c1 has the bigger ten bolt 28 spline, 8.5" ring gear not a 7.5 like alot of the 80s vehicles and s10s. Look into a f150 rear end. Mine has 355 gears, 34 spline axels and 9.75" ring and the disc brakes are engineered for a truck
__________________
71 jimmy bone stock 350 sm465 33x12.5 rallies 79 caprice landau full load crate350 th350 lowered 20"wires 00 f150 reg cab sb 4x4 5.4L |
![]() |
![]() |
![]() |
#15 |
Registered User
Join Date: Nov 2009
Location: maine
Posts: 2,315
|
Re: Caprice (9c1) rear disk brakes....
9c1 rear ends are not all posi, they are all 3:08 gears. All the impala ss 94-96 were posi 3:08. The 9c1 is narrower. And yes if you don't use it, go over to impalassforums.com .
Posted via Mobile Device Posted via Mobile Device
__________________
1972 C10 Deluxe.Shortbed. 402/400. A/C, white interior, needs complete restore. Project Red, white and blue. Used to be a Longbed apperently. http://67-72chevytrucks.com/vboard/s...d.php?t=451950 1971 c10 step 250 3 OTT 1969 c30 TOW-MATER. 307 4 speed, holmes 440 body. http://67-72chevytrucks.com/vboard/s...d.php?t=451082 2006 CTS-V LS2 6spd. Last edited by no moa; 03-24-2011 at 12:18 PM. |
![]() |
![]() |
![]() |
#16 |
Registered User
Join Date: Oct 2010
Location: Largo Florida
Posts: 632
|
Re: Caprice (9c1) rear disk brakes....
I have worked on 9C1 cars and can tell you that all disc brake rear axle from GM are Posi. Yes there are 3.42 in some 9C1 police cars (at least the later cop cars with disc brakes and LT1). It is the Impala SS that is only 3.08 ratio. I find it hard to believe that GM would make a special narrow axle for Police cars but I have not measured one so I cannot say for sure on that, stranger things GM has done.
__________________
Lifes journey is not to arrive at the gate well preserved, it is to slide in sideways all used up and wore out yelling.....God what'a ride! Where patience fails, force prevails Stapp's Ironical Paradox "The universal aptitude for ineptitude makes any human accomplishment an incredible miracle." |
![]() |
![]() |
![]() |
#17 | |
Registered User
Join Date: Nov 2009
Location: maine
Posts: 2,315
|
Re: Caprice (9c1) rear disk brakes....
Quote:
I can tell you for a fact. that i have 4 9c1 police cars, 94-96 with the SPID code of GU4 ONLY 308 ratio. No G80. The SPECIAL narrow axle, was used for TIRE CHAINS. The Civilian rears, and the SS rears are wider, the 9C1 police package cars, in the northern areas, used chains, the chains with the wider rear would desimate the rear fender wells. I can also tell you that NO GM LT1 powered 9C1 cars came from the factory with a 342 GU6 rear axle. Infact i have never seen a B-Body with a 342 factrory GU6. Camaro and firebird yes. B-Body no. The cars that came with the 4.3 L99 v8 came with a GU5. 323. I have one with a posi G80. And i have one factory SPID NO POSI. If you would like to verify this please go to: www.impalassforum.com or any 9c1 site. I have at least a dozen 94-96 9c1 police cars. It is my hobby. I have rebuild 3 of them from junk, and i have had 5 impala ss cars. If you would like me to start Posting SPID tags, Compnine info, and such i would be MORE than happy to help you out. 2.14 G72 2.93 GU3 2.29 GH2 3.08 GU4 2.41 GU1 3.23 GU5 2.56 GM8 3.42 GU6 2.73 GU2 3.73 GT4 Positraction G80
__________________
1972 C10 Deluxe.Shortbed. 402/400. A/C, white interior, needs complete restore. Project Red, white and blue. Used to be a Longbed apperently. http://67-72chevytrucks.com/vboard/s...d.php?t=451950 1971 c10 step 250 3 OTT 1969 c30 TOW-MATER. 307 4 speed, holmes 440 body. http://67-72chevytrucks.com/vboard/s...d.php?t=451082 2006 CTS-V LS2 6spd. Last edited by no moa; 03-24-2011 at 11:29 AM. |
|
![]() |
![]() |
![]() |
#18 |
Its Topless Season!!!!
Join Date: Jul 2007
Location: fort worth, tx
Posts: 1,657
|
Re: Caprice (9c1) rear disk brakes....
Thanks for the info guys...Im going to convert to disk up front also with the stock 73+ 5x5 1.25in rotor which I believe is 11in diameter. Im going to try to use the 9c1 in my truck and see how it goes.
|
![]() |
![]() |
![]() |
#19 |
toys'r'us
Join Date: Nov 2010
Location: Penticton, BC, Canada
Posts: 347
|
Re: Caprice (9c1) rear disk brakes....
my 2000 f150 is also 5x5 bolt pattern
__________________
71 jimmy bone stock 350 sm465 33x12.5 rallies 79 caprice landau full load crate350 th350 lowered 20"wires 00 f150 reg cab sb 4x4 5.4L |
![]() |
![]() |
![]() |
#21 |
toys'r'us
Join Date: Nov 2010
Location: Penticton, BC, Canada
Posts: 347
|
Re: Caprice (9c1) rear disk brakes....
ahhh poop i were both wrong http://www.rimhelp.com/searchrecords...sort_type=desc
the f150 9.75" is a good light truck diff and if its the right width would be worth getting drilled to 5x5.
__________________
71 jimmy bone stock 350 sm465 33x12.5 rallies 79 caprice landau full load crate350 th350 lowered 20"wires 00 f150 reg cab sb 4x4 5.4L |
![]() |
![]() |
![]() |
#22 |
Registered User
Join Date: Nov 2009
Location: maine
Posts: 2,315
|
Re: Caprice (9c1) rear disk brakes....
I'll say this, I'll put those 9c1 rear ends up against a truck rear anyday. We beat our 9c1s pretty hard, and I've only had one let go, and it was a carrier bearing. They are tough rears
Posted via Mobile Device
__________________
1972 C10 Deluxe.Shortbed. 402/400. A/C, white interior, needs complete restore. Project Red, white and blue. Used to be a Longbed apperently. http://67-72chevytrucks.com/vboard/s...d.php?t=451950 1971 c10 step 250 3 OTT 1969 c30 TOW-MATER. 307 4 speed, holmes 440 body. http://67-72chevytrucks.com/vboard/s...d.php?t=451082 2006 CTS-V LS2 6spd. |
![]() |
![]() |
![]() |
#23 |
Registered User
Join Date: Nov 2009
Location: maine
Posts: 2,315
|
Re: Caprice (9c1) rear disk brakes....
Little more info.
Chevy 91-92 sedan 1566mm - narrow (all) 93-96 sedan 1566mm - narrow (9C1 - disc & drum & some other drum applications) 1598mm - wide (Impala SS - disc & B4U - drum) Buick 91-96 & Fleetwood 93-96 sedans 1566mm - narrow (all) NOTE: Fleetwood housing is unique to the application - 4-channel ABS provisions 91-96 wagon, all 1642.5mm All 93-96 7.625" (ring gear) housings are 1598mm wide (Chevy sedan only) Sedan housings, in both widths, have the same lower control arm bracket location/spread distance, and will fit any other sedan frame. Wagons have a wider spread distance (approx. 2") between lower control arm brackets on housing, and corresponding wider frame lower control arm mounts. 8.5" axle shaft information - sedans only
__________________
1972 C10 Deluxe.Shortbed. 402/400. A/C, white interior, needs complete restore. Project Red, white and blue. Used to be a Longbed apperently. http://67-72chevytrucks.com/vboard/s...d.php?t=451950 1971 c10 step 250 3 OTT 1969 c30 TOW-MATER. 307 4 speed, holmes 440 body. http://67-72chevytrucks.com/vboard/s...d.php?t=451082 2006 CTS-V LS2 6spd. |
![]() |
![]() |
![]() |
#24 |
Registered User
Join Date: Nov 2009
Location: maine
Posts: 2,315
|
Re: Caprice (9c1) rear disk brakes....
Stock '94-96 Caprice and Roadmaster sedans and wagons came with 2.56 gears as a base and 2.93 gears were an option.
Stock '94-96 Caprice 9C1s and Impala SS's came with 3.08. Limited slip differential option (code G80 on the Service Parts ID sticker (SPID)) is an Auburn oem-style differential that is non-rebuildable. Aftermarket Auburn differentials are rebuildable by Auburn through an exchange program. The differential is an 8.5" style with 30-spline axles
__________________
1972 C10 Deluxe.Shortbed. 402/400. A/C, white interior, needs complete restore. Project Red, white and blue. Used to be a Longbed apperently. http://67-72chevytrucks.com/vboard/s...d.php?t=451950 1971 c10 step 250 3 OTT 1969 c30 TOW-MATER. 307 4 speed, holmes 440 body. http://67-72chevytrucks.com/vboard/s...d.php?t=451082 2006 CTS-V LS2 6spd. |
![]() |
![]() |
![]() |
#25 |
Registered User
Join Date: Nov 2009
Location: maine
Posts: 2,315
|
Axle width info for B-Body.
Parts listed are applicable to 94-96 B-body sedans, some may be applicable to 91-93 models.
Note: information posted is as found on manufacturer/supplier websites. There ARE errors--some listings show NARROW housing axles as fitting Impala SS, which is incorrect--as relates to PRODUCTION configuration. GM PART # 26038684 GM LIST: $328.83 DEALER COST: $194.93 DESCRIPTION: SHAFT,R/A - Caprice 9C1 w/rear disc (8.5/30 narrow) GM PART # 26018080 GM LIST: $249.19 DEALER COST: $147.72 DESCRIPTION: SHAFT,R/A - Caprice sedan, Buick Roadmaster sedan w/rear drum (8.5/30 narrow) GM PART # 26043164 GM LIST: $353.88 DEALER COST: $209.78 DESCRIPTION: SHAFT,R/A - Impala SS - rear disc (8.5/30 wide)NOTE can be used in place of 26033203 on B4U Caprice applications (26033203 discontinued) Above info from GM PARTS DIRECT
__________________
1972 C10 Deluxe.Shortbed. 402/400. A/C, white interior, needs complete restore. Project Red, white and blue. Used to be a Longbed apperently. http://67-72chevytrucks.com/vboard/s...d.php?t=451950 1971 c10 step 250 3 OTT 1969 c30 TOW-MATER. 307 4 speed, holmes 440 body. http://67-72chevytrucks.com/vboard/s...d.php?t=451082 2006 CTS-V LS2 6spd. |
![]() |
![]() |
![]() |
Bookmarks |
|
|