Re: 308 bearing on a 4 speed - different sizes?
[Re: 4406bbl]
#2441614
01/27/18 05:22 PM
01/27/18 05:22 PM
|
Joined: Jan 2003
Posts: 10,943 North Dakota
6PakBee
I Live Here
|
I Live Here
Joined: Jan 2003
Posts: 10,943
North Dakota
|
I think that motion bearing is a 308 sg10, you need 308 sg8, sg8s are no longer made, unless something has changed. And just when you think you have cut a fat hog in the butt......
"We live in a time when intelligent people are being silenced so that stupid people won't be offended".
|
|
|
Re: 308 bearing on a 4 speed - different sizes?
[Re: 135sohc]
#2442364
01/28/18 06:40 PM
01/28/18 06:40 PM
|
Joined: Dec 2004
Posts: 10,611 Rittman Ohio
fourgearsavoy
I Live Here
|
I Live Here
Joined: Dec 2004
Posts: 10,611
Rittman Ohio
|
Unless all you have is a 308 case there is no reason you can't use a 307 bearing case. I have built quite a few 307 bearing HEMI boxes and they are perfectly fine. Just because you can't find a 308 bearing at your local parts store doesn't mean they aren't available. I never go to a parts store for a bearing because they are limited to what applications they have in front of them. I buy the correct 308 bearing from Akron Bearing and they have them in stock. I run a 307 bearing HEMI box in my Savoy and it's working just fine. I would prefer a sealed bearing in my transmissions because the chunks of brass and metal floating around in the gear oil is the reason these bearing fail. My next transmission will probably have sealed bearings in it Gus
64 Plymouth Savoy 493 Indy EZ's by Nick at Compu-Flow 5-Speed Richmond faceplate Liberty box Dana 60
|
|
|
Re: 308 bearing on a 4 speed - different sizes?
[Re: fourgearsavoy]
#2442382
01/28/18 07:02 PM
01/28/18 07:02 PM
|
Joined: Jan 2003
Posts: 1,908 Nebraska
4406bbl
top fuel
|
top fuel
Joined: Jan 2003
Posts: 1,908
Nebraska
|
Unless all you have is a 308 case there is no reason you can't use a 307 bearing case. I have built quite a few 307 bearing HEMI boxes and they are perfectly fine. Just because you can't find a 308 bearing at your local parts store doesn't mean they aren't available. I never go to a parts store for a bearing because they are limited to what applications they have in front of them. I buy the correct 308 bearing from Akron Bearing and they have them in stock. I run a 307 bearing HEMI box in my Savoy and it's working just fine. I would prefer a sealed bearing in my transmissions because the chunks of brass and metal floating around in the gear oil is the reason these bearing fail. My next transmission will probably have sealed bearings in it Gus Thats good to know, will call them as I need 2 and my local has the incorrect 308. Thanks
|
|
|
Re: 308 bearing on a 4 speed - different sizes?
[Re: fourgearsavoy]
#2443304
01/30/18 11:17 AM
01/30/18 11:17 AM
|
Joined: Nov 2006
Posts: 356 NE
moparpoolman
enthusiast
|
enthusiast
Joined: Nov 2006
Posts: 356
NE
|
Unless all you have is a 308 case there is no reason you can't use a 307 bearing case. I have built quite a few 307 bearing HEMI boxes and they are perfectly fine. Just because you can't find a 308 bearing at your local parts store doesn't mean they aren't available. I never go to a parts store for a bearing because they are limited to what applications they have in front of them. I buy the correct 308 bearing from Akron Bearing and they have them in stock. I run a 307 bearing HEMI box in my Savoy and it's working just fine. I would prefer a sealed bearing in my transmissions because the chunks of brass and metal floating around in the gear oil is the reason these bearing fail. My next transmission will probably have sealed bearings in it Gus Which is better for a race application, 307 or 308 case? I've broke 3 A833's with the 308 so far, sheared all the teeth off third gear on the cluster all three times and they didn't have many miles on them so the bearings were not worn?
|
|
|
Re: 308 bearing on a 4 speed - different sizes?
[Re: fourgearsavoy]
#2443306
01/30/18 11:26 AM
01/30/18 11:26 AM
|
Joined: Jan 2003
Posts: 10,943 North Dakota
6PakBee
I Live Here
|
I Live Here
Joined: Jan 2003
Posts: 10,943
North Dakota
|
...I buy the correct 308 bearing from Akron Bearing and they have them in stock.... I just finished an email exchange with Steve Kalgreen from Akron Bearing Co. I asked for a 308 SG8 bearing with the 0.825" race width and he had no idea what I was talking about.
"We live in a time when intelligent people are being silenced so that stupid people won't be offended".
|
|
|
Re: 308 bearing on a 4 speed - different sizes?
[Re: moparpoolman]
#2443308
01/30/18 11:27 AM
01/30/18 11:27 AM
|
Joined: Jan 2003
Posts: 10,943 North Dakota
6PakBee
I Live Here
|
I Live Here
Joined: Jan 2003
Posts: 10,943
North Dakota
|
Which is better for a race application, 307 or 308 case? I've broke 3 A833's with the 308 so far, sheared all the teeth off third gear on the cluster all three times and they didn't have many miles on them so the bearings were not worn? Sounds like a shifter adjustment concern to me.
"We live in a time when intelligent people are being silenced so that stupid people won't be offended".
|
|
|
Re: 308 bearing on a 4 speed - different sizes?
[Re: 6PakBee]
#2443864
01/31/18 02:25 AM
01/31/18 02:25 AM
|
Joined: Jan 2003
Posts: 1,908 Nebraska
4406bbl
top fuel
|
top fuel
Joined: Jan 2003
Posts: 1,908
Nebraska
|
...I buy the correct 308 bearing from Akron Bearing and they have them in stock.... I just finished an email exchange with Steve Kalgreen from Akron Bearing Co. I asked for a 308 SG8 bearing with the 0.825" race width and he had no idea what I was talking about. Same story here, my local only had 308l.
|
|
|
Re: 308 bearing on a 4 speed - different sizes?
[Re: 6PakBee]
#2444235
01/31/18 09:13 PM
01/31/18 09:13 PM
|
Joined: Dec 2004
Posts: 10,611 Rittman Ohio
fourgearsavoy
I Live Here
|
I Live Here
Joined: Dec 2004
Posts: 10,611
Rittman Ohio
|
...I buy the correct 308 bearing from Akron Bearing and they have them in stock.... I just finished an email exchange with Steve Kalgreen from Akron Bearing Co. I asked for a 308 SG8 bearing with the 0.825" race width and he had no idea what I was talking about. Last fall I walked in with the bearing in my hand and The girl behind the counter just whipped out her calipers and made some measurements and got me the correct bearing. Gus
64 Plymouth Savoy 493 Indy EZ's by Nick at Compu-Flow 5-Speed Richmond faceplate Liberty box Dana 60
|
|
|
Re: 308 bearing on a 4 speed - different sizes?
[Re: 6PakBee]
#2444355
01/31/18 11:40 PM
01/31/18 11:40 PM
|
Joined: Aug 2003
Posts: 8,793 Mt.Gilead, Ohio
OhioMopar
master
|
master
Joined: Aug 2003
Posts: 8,793
Mt.Gilead, Ohio
|
Which is better for a race application, 307 or 308 case? I've broke 3 A833's with the 308 so far, sheared all the teeth off third gear on the cluster all three times and they didn't have many miles on them so the bearings were not worn? Sounds like a shifter adjustment concern to me. Third gear is the one to go when you have traction, weight and power. If he's driving it hard and hooking, 3rd gear will have a short life.
|
|
|
Re: 308 bearing on a 4 speed - different sizes?
[Re: dragon slayer]
#2919738
05/07/21 06:07 PM
05/07/21 06:07 PM
|
Joined: Dec 2014
Posts: 6,263 ohio
ruderunner
master
|
master
Joined: Dec 2014
Posts: 6,263
ohio
|
What are the correct dimensions for this bearing?
ID OD WIDTH?
Perhaps most importantly, distance from the snap ring to the surface that the input shaft mates to.
I'm thinking that with the right spacers or shims a standard 308 can work. Alternatively, I might be able to source a suitable bearing, we deal with lots of them at work, including some proprietary ones.
Last edited by ruderunner; 05/07/21 06:09 PM.
Angry white pureblood male
|
|
|
Re: 308 bearing on a 4 speed - different sizes?
[Re: dragon slayer]
#2920512
05/09/21 07:06 PM
05/09/21 07:06 PM
|
Joined: Dec 2014
Posts: 6,263 ohio
ruderunner
master
|
master
Joined: Dec 2014
Posts: 6,263
ohio
|
Ok, that's a very confusing way to answer a simple question. So for clarification...
ID. 1.378
Width. 827
OD, whatever is standard for a 308 bearing?
Does anyone have a dimension for the inboard race to outboard snap ring dimension?
Angry white pureblood male
|
|
|
Re: 308 bearing on a 4 speed - different sizes?
[Re: ruderunner]
#2920554
05/09/21 08:54 PM
05/09/21 08:54 PM
|
Joined: Jun 2014
Posts: 1,381 VA
dragon slayer
pro stock
|
pro stock
Joined: Jun 2014
Posts: 1,381
VA
|
OD is 90mm. For SG, Go look it up it is in the 307 or 308 spec from MRC or SKF. I was just trying to clarify why it is a special 308. It matches the 307 except for OD. In my opinion this is not something you want to start shimming. Use the correct bearing and selective snap ring.
Last edited by dragon slayer; 05/09/21 08:55 PM.
|
|
|
|
|