Dana Gear/spool series question

BLIND MULE · 02-16-2013, 12:13 AM

I removed this gear set out of my car last year. The only numbers are 80-6323-1/80-9323-1 and I cant find anything on them . Its a 5.57 precision gear. I was wondering if there was a way to tell whcih series spool that I have so I can order gears without taking the rearend out and apart? It currently has 4.88s and I want to go to 4.30s. Thanks

Geerhead55 · 02-16-2013, 12:42 AM

BM,,,, I've been pondering the same swap as you, since my Dana 60 has 4:88s, and I'm told if I want to go with 4:30s, I'll have to change spools,, but if I only go with 4:56s I'll be okay. I'm thinking I won't get enough rpm drop, however, so I'm doing a little more research, still. I don't know how to tell you the difference on the spool series, but most likely there is a thickness difference between the 2. I'm sure someone will let us know.
Please post any info you find,, thanks.
Danny Durham

FED 387 · 02-16-2013, 10:32 AM

If I remember right 3:54-4:10 uses one spool and 4:56-7:17 uses the other not sure just where a 4:30 would fit in tho---FED387

Tom Goldman · 02-16-2013, 12:20 PM

The 4.30 street gears go to the 3 series carrier, which is 4.10 and numerically lower ratios.
I have a customer who used to switch back and forth from 4.30's to 4.56's.
We machined the bearing shoulder on a 4 series spool and made a thick shim so we can use only one spool for both ratios.
Now Strange has a 4.30 Pro gear that fits the same spool as a 4.56

Geerhead55 · 02-17-2013, 03:58 PM

Thanks for the info,, Tom. I'm going to have to check into that for my own project.
Danny Durham

02-16-2013, 12:13 AM	#1
BLIND MULE Member Join Date: Dec 2002 Location: Alabama Posts: 318 Likes: 0 Liked 0 Times in 0 Posts	Dana Gear/spool series question I removed this gear set out of my car last year. The only numbers are 80-6323-1/80-9323-1 and I cant find anything on them . Its a 5.57 precision gear. I was wondering if there was a way to tell whcih series spool that I have so I can order gears without taking the rearend out and apart? It currently has 4.88s and I want to go to 4.30s. Thanks

02-16-2013, 12:42 AM	#2
Geerhead55 VIP Member Join Date: Sep 2002 Location: Tacoma, Washington Posts: 1,632 Likes: 0 Liked 5 Times in 5 Posts	Re: Dana Gear/spool series question BM,,,, I've been pondering the same swap as you, since my Dana 60 has 4:88s, and I'm told if I want to go with 4:30s, I'll have to change spools,, but if I only go with 4:56s I'll be okay. I'm thinking I won't get enough rpm drop, however, so I'm doing a little more research, still. I don't know how to tell you the difference on the spool series, but most likely there is a thickness difference between the 2. I'm sure someone will let us know. Please post any info you find,, thanks. Danny Durham

02-16-2013, 10:32 AM	#3
FED 387 VIP Member Join Date: Jun 2006 Posts: 3,410 Likes: 507 Liked 329 Times in 177 Posts	Re: Dana Gear/spool series question If I remember right 3:54-4:10 uses one spool and 4:56-7:17 uses the other not sure just where a 4:30 would fit in tho---FED387

02-16-2013, 12:20 PM	#4
Tom Goldman VIP Member Join Date: Jan 2003 Location: Allentown,PA Posts: 2,473 Likes: 881 Liked 858 Times in 234 Posts	Re: Dana Gear/spool series question The 4.30 street gears go to the 3 series carrier, which is 4.10 and numerically lower ratios. I have a customer who used to switch back and forth from 4.30's to 4.56's. We machined the bearing shoulder on a 4 series spool and made a thick shim so we can use only one spool for both ratios. Now Strange has a 4.30 Pro gear that fits the same spool as a 4.56 __________________ Tom Goldman 1500 SG , 1506 STK

02-17-2013, 03:58 PM	#5
Geerhead55 VIP Member Join Date: Sep 2002 Location: Tacoma, Washington Posts: 1,632 Likes: 0 Liked 5 Times in 5 Posts	Re: Dana Gear/spool series question Thanks for the info,, Tom. I'm going to have to check into that for my own project. Danny Durham