Search found 45 matches

by 67drake
Sun May 10, 2009 11:50 am
Forum: 10 Bolt Differential Questions
Topic: Tube Stamp on 67 Olds
Replies: 2
Views: 2280

Re: Tube Stamp on 67 Olds

I'm not the guru Jim is,but I figure I'll let you know what I do. I found the ID stamp on my 71' GTO on the front of the passenger side alxe tube. I found the one on my 67' Camaro on the front side of the drivers side axle tube. Both were about 1/2 way between the pumpkin and backing plate. FWIW I w...
by 67drake
Fri May 08, 2009 6:50 am
Forum: General Differential Questions
Topic: My gear pattern
Replies: 4
Views: 3423

Re: My gear pattern

Backlash varied depending on where I checked it. I checked in 90 degree increments around the ring gear and it was between .005-.008". If you look at the middle photo of the links I posted,does that one look like the pinion is too deep? This was the best I could get it. Coast side looked right ...
by 67drake
Thu May 07, 2009 9:04 am
Forum: General Differential Questions
Topic: My gear pattern
Replies: 4
Views: 3423

Re: My gear pattern

Sorry,I guess you'll have to click on the links,I thought the images would post.
by 67drake
Thu May 07, 2009 9:01 am
Forum: General Differential Questions
Topic: My gear pattern
Replies: 4
Views: 3423

My gear pattern

This is where I am at with a .042" shim under the pinion. Looks maybe like the pinion is a hair to far from carrier? Funny thing is I had .044" under there previously,and it looked as though it was definitely to CLOSE. I wouldn't think that this setting is so touchy that putting it at .043...
by 67drake
Sun May 03, 2009 6:01 pm
Forum: General Differential Questions
Topic: A few set up questions
Replies: 3
Views: 2583

Re: A few set up questions

Jim,on # 4, the web site (I believe it was "justdifferentials) said to retain the carrier BEARINGS with green locktight. But,like I said I have not read that anywhere else,so just wanted your opinion on that. Also,I bought a ring gear spacer and a longer set of new bolts from you.The ring gear ...
by 67drake
Tue Apr 28, 2009 10:00 am
Forum: General Differential Questions
Topic: A few set up questions
Replies: 3
Views: 2583

A few set up questions

Hi Jim, a few questions came up while starting the work on my 8.5. Some may be obvious,but I don't want to take a chance and ASSUME anything here. 1. Difference between 5 cut and 2 cut gears? I ASSUME 2 cut means one cut on the coast and a seperate cut for the drive side of the ring gear,correct? Th...
by 67drake
Sun Apr 19, 2009 3:31 pm
Forum: 10 Bolt Differential Questions
Topic: 8.2 to 8.5 swap u-joint/pinion yoke info
Replies: 1
Views: 2529

8.2 to 8.5 swap u-joint/pinion yoke info

I am in the process of planning my 8.2 to 8.5 swap in my 71' GTO. Doing this swap means I will have to shorten my driveshaft to work with the 8.5 rear. One of the questions I had was how to adapt my old driveshaft (or a donor,as in my case) to the different pinion yoke on the 8.5. The original pinio...
by 67drake
Tue Apr 14, 2009 8:28 pm
Forum: 10 Bolt Differential Questions
Topic: Help ID'ing 8.5 10 bolt
Replies: 4
Views: 2018

Re: Help ID'ing 8.5 10 bolt

Thanks!
by 67drake
Tue Apr 14, 2009 8:27 pm
Forum: 10 Bolt Differential Questions
Topic: shorten driveshaft swapping from 8.2 to 8.5
Replies: 4
Views: 2531

Re: shorten driveshaft swapping from 8.2 to 8.5

Thanks,that answers it for me.
by 67drake
Mon Apr 13, 2009 10:59 am
Forum: General Differential Questions
Topic: At what torque/HP level do axle tubes need welding?
Replies: 2
Views: 2499

Re: At what torque/HP level do axle tubes need welding?

Thanks,that is what I was looking for.
by 67drake
Mon Apr 13, 2009 10:53 am
Forum: 10 Bolt Differential Questions
Topic: shorten driveshaft swapping from 8.2 to 8.5
Replies: 4
Views: 2531

Re: shorten driveshaft swapping from 8.2 to 8.5

Ahhh,thats so obvious I guess I missed it,use an Olds or buick driveshaft. I thought of another question.Is there a difference between 4-speed and auto trans. driveshafts,length wise? I've heard there is,but not sure. I have a 4-speed so it might be a bit harder to track down a Olds/buick 4-speed dr...
by 67drake
Mon Apr 13, 2009 10:45 am
Forum: 10 Bolt Differential Questions
Topic: Help ID'ing 8.5 10 bolt
Replies: 4
Views: 2018

Re: Help ID'ing 8.5 10 bolt

So this is a Buick 71-72',correct? Any idea if this would be a skylark,or Fullsize rear? Just would make it easier to pick up brake parts for if I know the car model. If I go to the parts store and ask for 71' Buick rear drums and shoes,for example,I think they will want me to be more specific.LOL T...
by 67drake
Sun Apr 12, 2009 10:18 am
Forum: 10 Bolt Differential Questions
Topic: Help ID'ing 8.5 10 bolt
Replies: 4
Views: 2018

Help ID'ing 8.5 10 bolt

I'm just trying to get an exact ID on this rear. I am told 71-72' Pontiac,but what kind of car? GTO,Gran Prix? It has no brakes,so if I can get an idea of what kind of car it came out of,it would make buying brake drums,shoes,ect alot easier. It measures roughly54 3/8" between backing plates.Th...
by 67drake
Sun Apr 12, 2009 10:05 am
Forum: 10 Bolt Differential Questions
Topic: shorten driveshaft swapping from 8.2 to 8.5
Replies: 4
Views: 2531

shorten driveshaft swapping from 8.2 to 8.5

I'm going to be pulling my stock 8.2 out to put a 8.5 10 bolt in my 71' GTO,I understand I need to shorten my drive shaft. I figure I'll measure from trans to rear end before I pull the old one,and remeasure with the new rear installed. Instead of cutting the original,I'm looking for a donor. Were t...
by 67drake
Sun Apr 12, 2009 8:59 am
Forum: General Differential Questions
Topic: At what torque/HP level do axle tubes need welding?
Replies: 2
Views: 2499

At what torque/HP level do axle tubes need welding?

I'm building a 8.5" for my 4-speed 71' GTO. At what point do I need to have my axle tubes welded to the housing? I'm at about 380 HP,guessing around 450 ft. lbs. torque out of my 400. I run the car at the track for test and tune on street tires,but MIGHT use slicks sometime in the future. Would...

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