Search found 985 matches

by monzaz
Mon Aug 07, 2023 10:58 pm
Forum: Rear Ends and Parts
Topic: 10 bolt 8.5 Buick 1972 Skylark Oldsmobile cutlass 1971 POSI 3.73
Replies: 0
Views: 1375

10 bolt 8.5 Buick 1972 Skylark Oldsmobile cutlass 1971 POSI 3.73

NEW BUILD 10 BOLT 8.5 1971 1972 A BODY SKYLARK OR CUTLASS GM HOUSING NEW TRUE TRAC POSI NEW 3.73 YUKON RING AND PINION BRAND NEW BEARINGS AND SEAL NEW UPPER CONTROL ARM BUSHINGS AXLES ARE BOLT IN AXLES ORIGINAL AXLES WITH ORIGINAL BEARINGS AND SEALS BACKING PLATES INCLUDED HOUSING BLASTED AND PAINTE...
by monzaz
Thu Jun 08, 2023 9:47 am
Forum: 12 Bolt Differential Questions
Topic: 1966-76 9.375" Oldsmobile 12 bolt question
Replies: 8
Views: 4828

Re: 1966-76 9.375" Oldsmobile 12 bolt question

That is what the forum and site is for. :)

I just wish we could find more parts for you....Things are thin out there.
by monzaz
Thu Jun 08, 2023 12:00 am
Forum: 12 Bolt Differential Questions
Topic: 1966-76 9.375" Oldsmobile 12 bolt question
Replies: 8
Views: 4828

Re: 1966-76 9.375" Oldsmobile 12 bolt question

in the 9.3 I have not seen any 2,41 in 30 years....BUT I was not a BIG collector of full size car rears . 2.56 was most common then 2.73 ... a few 3.08 and 3.23 ratios and I believe I have NOT ever had a 3.42 either. Remember full size cars were luxury...and they had BIG cube motors and really just ...
by monzaz
Sun Jun 04, 2023 9:12 am
Forum: 12 Bolt Differential Questions
Topic: 1966-76 9.375" Oldsmobile 12 bolt question
Replies: 8
Views: 4828

Re: 1966-76 9.375" Oldsmobile 12 bolt question

The early 9.3 Olds 1966 -1970 will have 30 degree pitch axles and sealed axle bearings. The splines are usually NOT compatible with the 31 spline Ford axle spline pitch. The 1971 - 1976 era 9.3 Olds 12 bolt cover 12 bolt ring is a 45 degree axle spline pitch and should be compatible with the Ford 9&...
by monzaz
Thu Jun 01, 2023 6:19 pm
Forum: 12 Bolt Differential Questions
Topic: 1966-76 9.375" Oldsmobile 12 bolt question
Replies: 8
Views: 4828

Re: 1966-76 9.375" Oldsmobile 12 bolt question

It CAn be done...BUT the tubes are smaller at 3" But early trucks were 3" tubes but I think all 9.5 truck rears were 3.25" tubes. Later they started to make the 8.5 / 8.6 tubes 3.25' so they can all use the same perches from 1/2" to 3/4" rears. We have a complete 2.73 rear 9...
by monzaz
Sun May 07, 2023 10:22 pm
Forum: 10 Bolt Differential Questions
Topic: 76 monza
Replies: 6
Views: 12164

Re: 76 monza

Just peel the GM stainless sleeve from the yoke and it will be ALL normal again 8610. If not your going to pay 3 times as much for a seal.
710474
AAM 40006689
53395TM

all different part numbers for the teflon three lip seal.
JIm
by monzaz
Tue Jan 10, 2023 12:56 pm
Forum: Rear Ends and Parts
Topic: SOLD 10 bolt 8.5 custom NARROW S-10 2wd HD rear posi 3.73
Replies: 2
Views: 6614

Re: 10 bolt 8.5 custom NARROW S-10 2wd HD rear posi 3.73

this item has sold - we can build one just like it or to your specifications.
Thank you, JD Race all Or Email will get you a custom quote for the rear you want!

Jim
JD Race
by monzaz
Thu Dec 29, 2022 10:18 am
Forum: Rear Ends and Parts
Topic: 12 BOLT OLDSMOBILE O TYPE POSI UNIT ANTI SPIN CARRIER 28 SPLINE NEW
Replies: 0
Views: 1748

12 BOLT OLDSMOBILE O TYPE POSI UNIT ANTI SPIN CARRIER 28 SPLINE NEW

IN STOCK 12 BOLT OLDSMOBILE REAR ENDS POSI UNITS YUKON DURA GRIP (eaton design unit clutch and 400# preload street strip ) 3 SERIES CARRIER (3.08 3.23 gm ratio and 3.42 or 3.90 aftermarket ratios) 28 SPLINE AXLES 793.00 NEW IN THE BOX 3.42 AND 3.90 GEARS ARE AVAILABLE ALSO WE HAVE A FEW USED GEAR SE...
by monzaz
Tue Aug 16, 2022 2:17 pm
Forum: 10 Bolt Differential Questions
Topic: bop 8.2 gear swap
Replies: 6
Views: 5954

Re: bop 8.2 gear swap

I think you will be fine. Jim
by monzaz
Tue Aug 16, 2022 12:19 pm
Forum: 10 Bolt Differential Questions
Topic: bop 8.2 gear swap
Replies: 6
Views: 5954

Re: bop 8.2 gear swap

Send pics of pattern before removing anything. You will need a larger splitter type bearing remover and a press is the best. I really do not like the heat thing as people usually get the bearing too hot and end over over tempering it... they it will fail. It is something you might do for a demo derb...
by monzaz
Tue Aug 16, 2022 12:16 pm
Forum: 10 Bolt Differential Questions
Topic: bop 8.2 gear swap
Replies: 6
Views: 5954

Re: bop 8.2 gear swap

.008 to .010 is perfect for GM used gears.

So what is the driverside shim what is the passenger shim thickness?
by monzaz
Tue Aug 16, 2022 5:47 am
Forum: 10 Bolt Differential Questions
Topic: bop 8.2 gear swap
Replies: 6
Views: 5954

Re: bop 8.2 gear swap

Spacers in a BOP 8.2 rear are tricky. The stock posi units are a 2 piece set-up meaning the cone is one piece and the side gear sits on top. So if you do not have it centered enough in the case you could risk engaging only one piece and it will ruin the unit very quickly. so a 2 series flange is abo...
by monzaz
Mon Aug 15, 2022 8:20 am
Forum: General Discussion
Topic: 1964 Cutlass "Frankenstein Build" is Alive but Idle drops with Custom Cam
Replies: 24
Views: 25103

Re: 1964 Cutlass "Frankenstein Build" is Alive but Idle drops with Custom Cam

e thought the regulator too. had 3-4 different types on the car now. 2 different pumps Never tried to simulate standing still. Revving never seemed to be an issue. ONLY when we started on E85 has this problem occurred. I have the gas carb back on and might make a few runs same set up but with gas ca...
by monzaz
Mon Aug 15, 2022 8:07 am
Forum: 10 Bolt Differential Questions
Topic: Gear pattern
Replies: 14
Views: 7432

Re: Gear pattern

If you have any debris from when the ring was installed to the carrier...It would cause this. some time when the gear gets pulled or pressed on to the carrier the carrier body may get scraped from some material and then this gets lodged between the ring machined surface and the carrier machined surf...
by monzaz
Sun Aug 14, 2022 11:19 am
Forum: 10 Bolt Differential Questions
Topic: Gear pattern
Replies: 14
Views: 7432

Re: Gear pattern

oH bOY ...BEING A CHEAP GEAR this might be a difficult deal ...lol. Buy low cost get low cost. :( Well that pattern is very skippy to get an idea on. the pinion shim is in the neighborhood of where most 8.5 gears set-up. Backlash is too wide. .010 is where we want to be for a pattern do you have the...