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Rear-end "Gear Swap" ........

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DanTheVanMan
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Number of posts : 7724
Location : *** Sunny Fernandina Beach, Florida ***
Age : 55
Registration date : 2008-10-08

Rear-end "Gear Swap" ........

Post by DanTheVanMan on Fri Jul 10, 2015 6:01 pm

Looking at swapping the 3:36's our for some 3:08's.. Anyone have a source? Info or advice on making this swap?

Thanks,
Dan


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DanTheVanMan
1965 Chevy G10 Sportvan Custom
1966 Chevy G10 Panel Van (Pro-Street)"Mean Green"
1984 Jeep CJ-7 Laredo, Restored
2004 Kawasaki KLR650
1992 Sailfish 180 Pro Flats Boat

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<-<-<- Cruising is not a "Point A to Point B" thing, but an "Everything in between thing! <-<-<-
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Snakebite88

Number of posts : 20
Location : New Hampshire USA
Registration date : 2014-04-27

Re: Rear-end "Gear Swap" ........

Post by Snakebite88 on Sun Jul 12, 2015 3:50 pm

I bought a 336 ring, pinion and master install kit from this place. Was about $285.00 in all...looks like they sell a 308 also.

http://www.ronsmachiningservice.net/gm-8-2-chevy/
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DanTheVanMan
Commissioner
Commissioner

Number of posts : 7724
Location : *** Sunny Fernandina Beach, Florida ***
Age : 55
Registration date : 2008-10-08

Re: Rear-end "Gear Swap" ........

Post by DanTheVanMan on Sun Jul 12, 2015 4:36 pm

Cool! Thank you! cheers


_________________
DanTheVanMan
1965 Chevy G10 Sportvan Custom
1966 Chevy G10 Panel Van (Pro-Street)"Mean Green"
1984 Jeep CJ-7 Laredo, Restored
2004 Kawasaki KLR650
1992 Sailfish 180 Pro Flats Boat

My Mini Gallery



<-<-<- Cruising is not a "Point A to Point B" thing, but an "Everything in between thing! <-<-<-
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Xelmon

Number of posts : 342
Location : Smell-A, CA
Registration date : 2011-10-11

Re: Rear-end "Gear Swap" ........

Post by Xelmon on Sun Jul 12, 2015 5:33 pm

Particular mfg:
Yukon and Richmond are out there and I've heard that both are solid bets.

Van axles:
In general we got GM 8.2" rears with 1.400" pinion diameter. So if it says 1.628 or as such, that won't fit.

General RPO swap notes:
If you do that there's a somewhat expansive list of things you need.
In no particular order;
* New RPO (duh)
* Set of shims
* Pinion bearing
* Micrometer
* Paint
* Setting bearing
* And maybe a pinion seal... Don't recall.

Point is that it's not too complicated, however you'll need a ton of patience to set the backlash correctly. The Setting bearing is also a good to get, which is like $50 or so. It is necessary to be able to be able to setup your shims correctly, as you can remove it and measure/swap out shims multiple times to get a great mesh.
Otherwise you are guessing with pressing in a bearing, and destroying it when you have to pull them out if things are off.

Different between a thrown-together and properly-setup axle is also staggering. A setup axle will go for... ever, while a thrown-together axle can easily grenade itself in 500 miles or so from what I've heard.

Reading material:
Yukon gear's general assembly:
https://www.yukongear.com/Downloads/Manuals/Yukon_General_Installation_Instructions.pdf

More Yukon reading:
https://www.yukongear.com/Manuals.aspx

Read around the internet, there are some great guides out there dealing with say, a Dana-44 or 60 swap. They are roughly the same concept, just different numbers.


Last edited by Xelmon on Sun Jul 12, 2015 10:21 pm; edited 1 time in total
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DanTheVanMan
Commissioner
Commissioner

Number of posts : 7724
Location : *** Sunny Fernandina Beach, Florida ***
Age : 55
Registration date : 2008-10-08

Re: Rear-end "Gear Swap" ........

Post by DanTheVanMan on Sun Jul 12, 2015 9:24 pm

Good info Xelmon! Thank you! study


_________________
DanTheVanMan
1965 Chevy G10 Sportvan Custom
1966 Chevy G10 Panel Van (Pro-Street)"Mean Green"
1984 Jeep CJ-7 Laredo, Restored
2004 Kawasaki KLR650
1992 Sailfish 180 Pro Flats Boat

My Mini Gallery



<-<-<- Cruising is not a "Point A to Point B" thing, but an "Everything in between thing! <-<-<-
avatar
Snakebite88

Number of posts : 20
Location : New Hampshire USA
Registration date : 2014-04-27

Re: Rear-end "Gear Swap" ........

Post by Snakebite88 on Mon Jul 13, 2015 3:28 pm

When you buy a gear set, make sure it's the Chevy 8.2 and not the BOP 8.2. The BOP won't work.


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