Spline count on 10 bolt rearends. Anyone know this?
Spline count on 10 bolt rearends. Anyone know this?
Just wondering if anyone knows the spline counts on the 10 bolt rear ends on the astros and safaris. I am sure the early ones are low like 16 or something but I need to know if any year has a read end with a 28 spline axle.
Thanks,
Jim
Thanks,
Jim
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Re: Spline count on 10 bolt rearends. Anyone know this?
If you are asking about the splines on the axles I believe the vans used two sizes over the years. The early models had 26 and the later had 28. Don't ask when the 28 spline started though. I know the 90 and up I have owned had 28. Can't remember if it had anything to do with the carrier. There were two ring sizes. 7.5 and 7.625 and carriers for low ratios and higher ratios.
Current:
01 AWD - Stock
98 AWD - Stock
Past:
93 4WD - 305 V8 - 5" lift - 31" tires
98 4WD DHC - 10" lift - 33" tires - Onboard air and Hydraulics - Snowplow
92 RWD - 350 V8 - lowered - 97 front clip
92 RWD - 350 V8 - converted to AWD - V6
91 AWD - 350 V8 - conversion van
94 RWD - 350 V8 - sons van
92 RWD - stock - sons van
93 RWD Shorty - project
89 RWD Shorty - parts van
01 AWD - Stock
98 AWD - Stock
Past:
93 4WD - 305 V8 - 5" lift - 31" tires
98 4WD DHC - 10" lift - 33" tires - Onboard air and Hydraulics - Snowplow
92 RWD - 350 V8 - lowered - 97 front clip
92 RWD - 350 V8 - converted to AWD - V6
91 AWD - 350 V8 - conversion van
94 RWD - 350 V8 - sons van
92 RWD - stock - sons van
93 RWD Shorty - project
89 RWD Shorty - parts van
Re: Spline count on 10 bolt rearends. Anyone know this?
Cool, that answers my question. Is there anywhere online I could find specs on the rearends? What I really need is one with a posi but I don't know if they made them in astros with one. It would make sense with the awd models but I am not sure.
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Re: Spline count on 10 bolt rearends. Anyone know this?
Yeah-the G80 code is a posi in a Astro.AWD's have to have matched ratios front and back.Didn't see if your's is a AWD.
Call me Gary
1985 Astro-"Ole Yellar"
1994 LT Astro
1981 Winnebago-"Baby"
12'dual axle enclosed trailer
The vendor trailer
Lead with my heart & take the hits because of it like a man.
1985 Astro-"Ole Yellar"
1994 LT Astro
1981 Winnebago-"Baby"
12'dual axle enclosed trailer
The vendor trailer
Lead with my heart & take the hits because of it like a man.
Re: Spline count on 10 bolt rearends. Anyone know this?
No, mine is just a 2wd. I have some gears and a posi out of a 4th gen f-body which is why I was asking about the axle spline count. But if I could find a rearend with a posi, that would be fine for now too. With the new engine, I am really tired of spinning one tire.GEJ wrote:Yeah-the G80 code is a posi in a Astro.AWD's have to have matched ratios front and back.Didn't see if your's is a AWD.
Not a member of the good ole boys.
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Re: Spline count on 10 bolt rearends. Anyone know this?
The G80 code I speak of is the build code sometimes found in the glove box.Sorry I don't know the yr range and where the codes are located given the yr of the van.On my 1985-it's on the drivers door and on my 1994 LT it's in the glove box.
Call me Gary
1985 Astro-"Ole Yellar"
1994 LT Astro
1981 Winnebago-"Baby"
12'dual axle enclosed trailer
The vendor trailer
Lead with my heart & take the hits because of it like a man.
1985 Astro-"Ole Yellar"
1994 LT Astro
1981 Winnebago-"Baby"
12'dual axle enclosed trailer
The vendor trailer
Lead with my heart & take the hits because of it like a man.
Re: Spline count on 10 bolt rearends. Anyone know this?
With my 89, the build codes are also in the glove box. It does have 3.23 gears in it (gu5) but not the posi.
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Re: Spline count on 10 bolt rearends. Anyone know this?
The G80 is a Eaton gov lock posi and the camaro would most likely be the Auburn limited slip. I would use the Auburn if for a toy V8 van. The G80 is meant for low speed lockup. Like pulling a trailer out of the water, snow, etc.
Current:
01 AWD - Stock
98 AWD - Stock
Past:
93 4WD - 305 V8 - 5" lift - 31" tires
98 4WD DHC - 10" lift - 33" tires - Onboard air and Hydraulics - Snowplow
92 RWD - 350 V8 - lowered - 97 front clip
92 RWD - 350 V8 - converted to AWD - V6
91 AWD - 350 V8 - conversion van
94 RWD - 350 V8 - sons van
92 RWD - stock - sons van
93 RWD Shorty - project
89 RWD Shorty - parts van
01 AWD - Stock
98 AWD - Stock
Past:
93 4WD - 305 V8 - 5" lift - 31" tires
98 4WD DHC - 10" lift - 33" tires - Onboard air and Hydraulics - Snowplow
92 RWD - 350 V8 - lowered - 97 front clip
92 RWD - 350 V8 - converted to AWD - V6
91 AWD - 350 V8 - conversion van
94 RWD - 350 V8 - sons van
92 RWD - stock - sons van
93 RWD Shorty - project
89 RWD Shorty - parts van
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- I have my van tatooed on my cheeks
- Posts: 4379
- Joined: Sat Sep 09, 2006 3:35 pm
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Re: Spline count on 10 bolt rearends. Anyone know this?
1985 to 1989 Astro and Safari vans had a 26 spline 7.5" 10 bolt. 1990 on are 28 spline 7.625" 10 bolts. The carriers and gears are interchangeable as long as the carrier breaks are recognized. The break is 3.08/3.23. The posi unit you are looking at must be the 7.5/7.625" 10 bolt and not the 8.5" 10 bolt.
Current rides:
2013 Toyota Tundra DC 4x4
2008 Dodge Nitro 4x4
2005 Nissan Sentra 1.8S Special Edition
Mileage spreadsheet
Vans owned:
1986 Safari 2.5L 4 speed manual - scrapped
1995 Astro 2WD conversion 4.11 posi, shift kit, DHC rock rails - sold to Skippy
1998 Astro 4x4 D44, D60, NP231, full hydraulic system with 9k# Milemarker winch and snow plow - sold to Lockdoc
2003 Astro AWD all stock - traded for a 3/4 ton truck
2005 AWD, 4.10's - sold to skippy
2013 Toyota Tundra DC 4x4
2008 Dodge Nitro 4x4
2005 Nissan Sentra 1.8S Special Edition
Mileage spreadsheet
Vans owned:
1986 Safari 2.5L 4 speed manual - scrapped
1995 Astro 2WD conversion 4.11 posi, shift kit, DHC rock rails - sold to Skippy
1998 Astro 4x4 D44, D60, NP231, full hydraulic system with 9k# Milemarker winch and snow plow - sold to Lockdoc
2003 Astro AWD all stock - traded for a 3/4 ton truck
2005 AWD, 4.10's - sold to skippy
Re: Spline count on 10 bolt rearends. Anyone know this?
Yes, that would be correct. Not the 8.5".LiftedAWDAstro wrote:1985 to 1989 Astro and Safari vans had a 26 spline 7.5" 10 bolt. 1990 on are 28 spline 7.625" 10 bolts. The carriers and gears are interchangeable as long as the carrier breaks are recognized. The break is 3.08/3.23. The posi unit you are looking at must be the 7.5/7.625" 10 bolt and not the 8.5" 10 bolt.
Not a member of the good ole boys.