ID WTB Front Bearing retianer sm420 - The 1947 - Present Chevrolet & GMC Truck Message Board Network

odog · 02-28-2012, 08:45 PM

I need a front Bearing retainer off a SM420 manual transmission. Retainer is 4 11/16 inches four bolt cover for input shaft on transmission.

**Ironhorse** · 02-28-2012, 08:52 PM

I may have a spare in my stash of parts in the parts shed. Will look tomorrow and do some measuring. Do you have any numbers that may help? I know I have a bearing retainer but not sure what it came from.

odog · 02-28-2012, 09:45 PM

I cant get any #'s without pulling the trans. I know the retainer is 4 11/16 inches. 4 bolt holes around it

This is novacks billit design Name: sm_420_front_retainer_b-3761982.jpg
Views: 783
Size: 19.2 KB

Name: sm_420_front_retainer_b-3761982.jpg
Views: 783
Size: 19.2 KB

And this is what it looks like on the trans Name: sm420_transmission.jpg
Views: 800
Size: 21.1 KB

. I dont know much else. I think mine may be cracked as it is leaking 80/90 out the front pretty bad, either that or the seal is bad. I would like to have both seal and retainer when I pull the trans out so I can just fix it and put it back together.

Thanks

Erik

**Ironhorse** · 02-29-2012, 01:42 PM

Sorry but can't help you on the bearing retainer. Think mine must be for the sm465 as it is a larger at 5 1/8" dia. with four bolt holes, "GM 12" cast into it with " 3920748" stamped on the edge. Sorry to get your hopes up.

**70STOVEBOLT** · 02-29-2012, 01:49 PM

I may have one, I will check and let you know in a little while.

**Todd68Chevy** · 02-29-2012, 02:04 PM

If 70Stovebolt can not help I have this http://67-72chevytrucks.com/vboard/s...d.php?t=480846 and I can measure it this evening. It was a 4 speed out of a 1967 C20 but I do not know what number it is.

**70STOVEBOLT** · 02-29-2012, 03:50 PM

I don't have one. Todd, those parts look like they might be New Process pieces. What is the casting number on that front bearing retainer?

**Todd68Chevy** · 02-29-2012, 09:16 PM

I really do not know what the transmission is that I got the parts off of. The transmission case looks like it has a casting #C-95948 D. I need to clean the bearing retainer up and recheck but it looks like it has a casting #97127. I measure it out at 4 5/8" diameter. I found this web site http://www.novak-adapt.com/knowledge...on_gateway.htm and it states the New Process has an aluminum top cover and this one is cast iron. It also states the SM420 was used up to 1967 and the SM465 were used 1968 and newer. I will get it cleaned tomorrow and get better pictures. Thanks

odog · 02-29-2012, 11:06 PM

I looked at your other thread, and the pics look similar, but if you would could you post a pic of just the front retainer, front and back when you get it cleaned up? I think this is the piece, its supposed to be 4 11/16 so 4 5/8 is dang close. My trans is out of a 67 k20, I think the last year for the 420.

odog · 02-29-2012, 11:08 PM

I thank the rest of you for looking, I appreciate the effort.

Meatman · 03-01-2012, 12:06 AM

Sucks man. I just took a SM420 for scrap a week ago. No one wanted it.

odog · 03-01-2012, 01:20 AM

Thats just the luck I have. My buddy had one in his jeep that he put in the scrap pile at work about 6 months ago. I keep kicking myself for not getting it. 3rd gear was shot but the rest was good, I didnt even think about getting it for spares. Live and learn I guess.

**Todd68Chevy** · 03-01-2012, 09:09 AM

Here are some pictures. There are pictures in post 5 of the thread that shows all the parts that are available. If you are interested in all of it $20.00 plus shipping or if you just want this retainer for $10.00 plus shipping. I would need a zip code to figure shipping but I thing everything but the top cover and shift forks will fit in a flat rate box for $11.35 or the bearing retainer by itself will be less. Thanks

**70STOVEBOLT** · 03-01-2012, 01:02 PM

Guys, Todd's trans is a New Process 435 according to the casting number on the case.
The casting number on the front bearing retainer is for GM w/tapered bearing, 1967 according to my books. Sorry Todd, not trying to derail your sale, but if odog is positive
he has a SM420 then your cover will not work. The bearing retainer for the SM420 should have a
casting number of 3761932.

**Todd68Chevy** · 03-01-2012, 01:11 PM

Quote:

Originally Posted by 70STOVEBOLT

Guys, Todd's trans is a New Process 435 according to the casting number on the case.
The casting number on the front bearing retainer is for GM w/tapered bearing, 1967 according to my books. Sorry Todd, not trying to derail your sale, but if odog is positive
he has a SM420 then your cover will not work.

No problem on my end. Like I said before, I do not know what the transmission is and I do not want to sell the wrong part to some one so I am thankful for any and all help. I still have the entire transmission so I can check anything or get pictures, just let me know. Thanks

**Ironhorse** · 03-01-2012, 02:23 PM

Stovebolt, can you de-code the bearing retainer I have in the 4th post to this thread? I haven't been able to find anything on it. GM 12 cast into the housing, 5 1/8" in diameter and has " 3920748" stamped into it. Would be good to know for future reference. Thanks for any help.

**70STOVEBOLT** · 03-01-2012, 04:54 PM

Can't find any info on that number. Do you have the whole transmission? If so I can probably ID it by the casting number off the main case.

**Ironhorse** · 03-01-2012, 05:18 PM

Now I don't feel so bad as I couldn't find anything at all on it, LOL

Don't have the tranny it came from, had it for years and don't remember how it showed up. ?? Oh well. Thanks for the try.

odog · 03-01-2012, 06:12 PM

todd stovebolt is right that wont work. it looks good except 4 the tapered bearing. Thanks for looking 4 me sorry we couldnt make a deal. Stovebolt thanks for catching that I appreciate it. Ironhorse that may be off a sm465 rans. those measured 5 1\8 I believe.

I just got off the phone with the guys at Novak and ordered 1 from them. didnt want to go that route very badly but kinda need to get this going. Thank you guys for looking for me.

Erik
Posted via Mobile Device

**70STOVEBOLT** · 03-01-2012, 06:40 PM

Quote:

Originally Posted by Ironhorse

Now I don't feel so bad as I couldn't find anything at all on it, LOL

Don't have the tranny it came from, had it for years and don't remember how it showed up. ?? Oh well. Thanks for the try.

No problem.

**Todd68Chevy** · 03-01-2012, 10:32 PM

Sorry I could not help. I am glad that we did not make a deal on the wrong part. That does not work for either of us.

02-28-2012, 08:45 PM	#1
odog Registered User Join Date: Oct 2007 Location: Wendell, Idaho Posts: 608	WTB Front Bearing retianer sm420 I need a front Bearing retainer off a SM420 manual transmission. Retainer is 4 11/16 inches four bolt cover for input shaft on transmission. __________________ 1969 4x4 Nothing beats a good rock drill and some dynamite

02-28-2012, 08:52 PM	#2
Ironhorse Senior Member Join Date: Jul 2001 Location: Wellington, Ks Posts: 10,154	Re: WTB Front Bearing retianer sm420 I may have a spare in my stash of parts in the parts shed. Will look tomorrow and do some measuring. Do you have any numbers that may help? I know I have a bearing retainer but not sure what it came from. __________________ 1971 Chevy 1/2T 4x4 LWB 350 V-8 Was sm465-now 350TH/np205 Tilt, Tach, Towhooks Original Truck AM/FM Wellington, Ks

02-28-2012, 09:45 PM	#3
odog Registered User Join Date: Oct 2007 Location: Wendell, Idaho Posts: 608	Re: WTB Front Bearing retianer sm420 I cant get any #'s without pulling the trans. I know the retainer is 4 11/16 inches. 4 bolt holes around it This is novacks billit design And this is what it looks like on the trans . I dont know much else. I think mine may be cracked as it is leaking 80/90 out the front pretty bad, either that or the seal is bad. I would like to have both seal and retainer when I pull the trans out so I can just fix it and put it back together. Thanks Erik __________________ 1969 4x4 Nothing beats a good rock drill and some dynamite

02-29-2012, 01:42 PM	#4
Ironhorse Senior Member Join Date: Jul 2001 Location: Wellington, Ks Posts: 10,154	Re: WTB Front Bearing retianer sm420 Sorry but can't help you on the bearing retainer. Think mine must be for the sm465 as it is a larger at 5 1/8" dia. with four bolt holes, "GM 12" cast into it with " 3920748" stamped on the edge. Sorry to get your hopes up. __________________ 1971 Chevy 1/2T 4x4 LWB 350 V-8 Was sm465-now 350TH/np205 Tilt, Tach, Towhooks Original Truck AM/FM Wellington, Ks

02-29-2012, 01:49 PM	#5
70STOVEBOLT Senior Member Join Date: Jun 2005 Location: Winona Lake, IN Posts: 6,258	Re: WTB Front Bearing retianer sm420 I may have one, I will check and let you know in a little while. __________________ 70 C/10 SWB 402/TH400/3.73 "The Needy Beast" 200,000 Mile Club Disc Brake Club Owner installed options: Front Sway Bar Power Steering Power Brakes Cigar Lighter Courtesy Lights Deluxe Side Markers Wiper Delay Power windows Power Locks Sniper EFI 2015 Silverado 1500 LS 4.3/6L80/3.23 lowered 2" front & rear

02-29-2012, 02:04 PM	#6
Todd68Chevy Senior Member Join Date: Oct 2009 Location: Shelburn Indiana Posts: 3,977	Re: WTB Front Bearing retianer sm420 If 70Stovebolt can not help I have this http://67-72chevytrucks.com/vboard/s...d.php?t=480846 and I can measure it this evening. It was a 4 speed out of a 1967 C20 but I do not know what number it is. __________________ Note: All parts I have for sale are also for sale locally. I currently own: 1940 Chevy Fire truck (project), 1946 Chevy truck (project), 1946 Chevy 1 Ton pick up, 1953 Chevy school bus (storage area), 1968 Chevy C10 (I have drove for 26 years), 1994 Chevy C2500 (daily driver), 2005 GMC crew cab K2500 (parts hauler) and more trucks for parts.

02-29-2012, 03:50 PM	#7
70STOVEBOLT Senior Member Join Date: Jun 2005 Location: Winona Lake, IN Posts: 6,258	Re: WTB Front Bearing retianer sm420 I don't have one. Todd, those parts look like they might be New Process pieces. What is the casting number on that front bearing retainer? __________________ 70 C/10 SWB 402/TH400/3.73 "The Needy Beast" 200,000 Mile Club Disc Brake Club Owner installed options: Front Sway Bar Power Steering Power Brakes Cigar Lighter Courtesy Lights Deluxe Side Markers Wiper Delay Power windows Power Locks Sniper EFI 2015 Silverado 1500 LS 4.3/6L80/3.23 lowered 2" front & rear

02-29-2012, 09:16 PM	#8
Todd68Chevy Senior Member Join Date: Oct 2009 Location: Shelburn Indiana Posts: 3,977	Re: WTB Front Bearing retianer sm420 I really do not know what the transmission is that I got the parts off of. The transmission case looks like it has a casting #C-95948 D. I need to clean the bearing retainer up and recheck but it looks like it has a casting #97127. I measure it out at 4 5/8" diameter. I found this web site http://www.novak-adapt.com/knowledge...on_gateway.htm and it states the New Process has an aluminum top cover and this one is cast iron. It also states the SM420 was used up to 1967 and the SM465 were used 1968 and newer. I will get it cleaned tomorrow and get better pictures. Thanks __________________ Note: All parts I have for sale are also for sale locally. I currently own: 1940 Chevy Fire truck (project), 1946 Chevy truck (project), 1946 Chevy 1 Ton pick up, 1953 Chevy school bus (storage area), 1968 Chevy C10 (I have drove for 26 years), 1994 Chevy C2500 (daily driver), 2005 GMC crew cab K2500 (parts hauler) and more trucks for parts.

02-29-2012, 11:06 PM	#9
odog Registered User Join Date: Oct 2007 Location: Wendell, Idaho Posts: 608	Re: WTB Front Bearing retianer sm420 I looked at your other thread, and the pics look similar, but if you would could you post a pic of just the front retainer, front and back when you get it cleaned up? I think this is the piece, its supposed to be 4 11/16 so 4 5/8 is dang close. My trans is out of a 67 k20, I think the last year for the 420. __________________ 1969 4x4 Nothing beats a good rock drill and some dynamite

02-29-2012, 11:08 PM	#10
odog Registered User Join Date: Oct 2007 Location: Wendell, Idaho Posts: 608	Re: WTB Front Bearing retianer sm420 I thank the rest of you for looking, I appreciate the effort. __________________ 1969 4x4 Nothing beats a good rock drill and some dynamite

03-01-2012, 12:06 AM	#11
Meatman Registered User Join Date: Sep 2004 Location: Topeka, Ks Posts: 604	Re: WTB Front Bearing retianer sm420 Sucks man. I just took a SM420 for scrap a week ago. No one wanted it. __________________ Daily-94 K2500 350 5spd extended cab longbox Project Red Velvet-68 C20 396-th400-AC-PS-PB-all original except for the 8 track and the gun rack. Build thread>>>>http://67-72chevytrucks.com/vboard/s...d.php?t=495881 My 01 TA and 88 Formula hide in the garage. :-)

03-01-2012, 01:20 AM	#12
odog Registered User Join Date: Oct 2007 Location: Wendell, Idaho Posts: 608	Re: WTB Front Bearing retianer sm420 Thats just the luck I have. My buddy had one in his jeep that he put in the scrap pile at work about 6 months ago. I keep kicking myself for not getting it. 3rd gear was shot but the rest was good, I didnt even think about getting it for spares. Live and learn I guess. __________________ 1969 4x4 Nothing beats a good rock drill and some dynamite

03-01-2012, 09:09 AM	#13
Todd68Chevy Senior Member Join Date: Oct 2009 Location: Shelburn Indiana Posts: 3,977	Re: WTB Front Bearing retianer sm420 Here are some pictures. There are pictures in post 5 of the thread that shows all the parts that are available. If you are interested in all of it $20.00 plus shipping or if you just want this retainer for $10.00 plus shipping. I would need a zip code to figure shipping but I thing everything but the top cover and shift forks will fit in a flat rate box for $11.35 or the bearing retainer by itself will be less. Thanks Attached Images __________________ Note: All parts I have for sale are also for sale locally. I currently own: 1940 Chevy Fire truck (project), 1946 Chevy truck (project), 1946 Chevy 1 Ton pick up, 1953 Chevy school bus (storage area), 1968 Chevy C10 (I have drove for 26 years), 1994 Chevy C2500 (daily driver), 2005 GMC crew cab K2500 (parts hauler) and more trucks for parts.

03-01-2012, 01:02 PM	#14
70STOVEBOLT Senior Member Join Date: Jun 2005 Location: Winona Lake, IN Posts: 6,258	Re: WTB Front Bearing retianer sm420 Guys, Todd's trans is a New Process 435 according to the casting number on the case. The casting number on the front bearing retainer is for GM w/tapered bearing, 1967 according to my books. Sorry Todd, not trying to derail your sale, but if odog is positive he has a SM420 then your cover will not work. The bearing retainer for the SM420 should have a casting number of 3761932. __________________ 70 C/10 SWB 402/TH400/3.73 "The Needy Beast" 200,000 Mile Club Disc Brake Club Owner installed options: Front Sway Bar Power Steering Power Brakes Cigar Lighter Courtesy Lights Deluxe Side Markers Wiper Delay Power windows Power Locks Sniper EFI 2015 Silverado 1500 LS 4.3/6L80/3.23 lowered 2" front & rear Last edited by 70STOVEBOLT; 03-01-2012 at 01:15 PM.

03-01-2012, 02:23 PM	#16
Ironhorse Senior Member Join Date: Jul 2001 Location: Wellington, Ks Posts: 10,154	Re: WTB Front Bearing retianer sm420 Stovebolt, can you de-code the bearing retainer I have in the 4th post to this thread? I haven't been able to find anything on it. GM 12 cast into the housing, 5 1/8" in diameter and has " 3920748" stamped into it. Would be good to know for future reference. Thanks for any help. __________________ 1971 Chevy 1/2T 4x4 LWB 350 V-8 Was sm465-now 350TH/np205 Tilt, Tach, Towhooks Original Truck AM/FM Wellington, Ks



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03-01-2012, 04:54 PM	#17
70STOVEBOLT Senior Member Join Date: Jun 2005 Location: Winona Lake, IN Posts: 6,258	Re: WTB Front Bearing retianer sm420 Can't find any info on that number. Do you have the whole transmission? If so I can probably ID it by the casting number off the main case. __________________ 70 C/10 SWB 402/TH400/3.73 "The Needy Beast" 200,000 Mile Club Disc Brake Club Owner installed options: Front Sway Bar Power Steering Power Brakes Cigar Lighter Courtesy Lights Deluxe Side Markers Wiper Delay Power windows Power Locks Sniper EFI 2015 Silverado 1500 LS 4.3/6L80/3.23 lowered 2" front & rear

03-01-2012, 05:18 PM	#18
Ironhorse Senior Member Join Date: Jul 2001 Location: Wellington, Ks Posts: 10,154	Re: WTB Front Bearing retianer sm420 Now I don't feel so bad as I couldn't find anything at all on it, LOL Don't have the tranny it came from, had it for years and don't remember how it showed up. ?? Oh well. Thanks for the try. __________________ 1971 Chevy 1/2T 4x4 LWB 350 V-8 Was sm465-now 350TH/np205 Tilt, Tach, Towhooks Original Truck AM/FM Wellington, Ks

03-01-2012, 06:12 PM	#19
odog Registered User Join Date: Oct 2007 Location: Wendell, Idaho Posts: 608	Re: WTB Front Bearing retianer sm420 todd stovebolt is right that wont work. it looks good except 4 the tapered bearing. Thanks for looking 4 me sorry we couldnt make a deal. Stovebolt thanks for catching that I appreciate it. Ironhorse that may be off a sm465 rans. those measured 5 1\8 I believe. I just got off the phone with the guys at Novak and ordered 1 from them. didnt want to go that route very badly but kinda need to get this going. Thank you guys for looking for me. Erik Posted via Mobile Device __________________ 1969 4x4 Nothing beats a good rock drill and some dynamite

03-01-2012, 10:32 PM	#21
Todd68Chevy Senior Member Join Date: Oct 2009 Location: Shelburn Indiana Posts: 3,977	Re: WTB Front Bearing retianer sm420 Sorry I could not help. I am glad that we did not make a deal on the wrong part. That does not work for either of us. __________________ Note: All parts I have for sale are also for sale locally. I currently own: 1940 Chevy Fire truck (project), 1946 Chevy truck (project), 1946 Chevy 1 Ton pick up, 1953 Chevy school bus (storage area), 1968 Chevy C10 (I have drove for 26 years), 1994 Chevy C2500 (daily driver), 2005 GMC crew cab K2500 (parts hauler) and more trucks for parts.

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