63 corvette brg. retainer part no.-Joe L.

[Edward J.]

Hi Joe, there is a 63 corvette front brg. retainer for sale on flea bay, part no. 3859032 is the the correct fo my 63 b/w T-10?

[Michael H.]

Re: 63 corvette brg. retainer part no.-Joe L.

Hi Joe, there is a 63 corvette front brg. retainer for sale on flea bay, part no. 3859032 is the the correct fo my 63 b/w T-10?

The 3859032 is a front bearing retainer for a 66 passenger car Saginaw 3 and 4 speed and 66 Corvette with three speed. It has a 4 3/4" diameter.

63 (only) Corvette used a 604932 retainer. It has a 4 3/16" diameter.

[Joe R.]

Re: 63 corvette brg. retainer part no.-Joe L.

Well I ain't no Joe L. or M. Hanson but my T-10 just happens to be on the bench and it's bearing retainer number is 3790278.

Maybe it's the wrong one!!!!!

JR

PS. That's probably the casting number. Should be one different for the PN.

[Michael H.]

Re: 63 corvette brg. retainer part no.-Joe L.

Well I ain't no Joe L. or M. Hanson but my T-10 just happens to be on the bench and it's bearing retainer number is 3790278.

Maybe it's the wrong one!!!!!

JR

PS. That's probably the casting number. Should be one different for the PN.

Joe,

There were two different front bearing retainers used for 63. One was cast iron and the other was aluminum. I think the aluminum retainer was discontinued at some point during the 63 model run and replaced by the iron unit. The 604932 iron retainer was available for a few decades after 63 so it's probably the only NOS retainer that will ever be on ebay.
I don't remember the casting number for either retainer.

[Joe L.]

Re: 63 corvette brg. retainer part no.-Joe L.

Hi Joe, there is a 63 corvette front brg. retainer for sale on flea bay, part no. 3859032 is the the correct fo my 63 b/w T-10?

Edward-----


Retainer GM #3859032 is not applicable to 63 Corvettes. It is applicable to 66-70 Corvettes with 3 speed as well as other applications.

[Joe R.]

Re: 63 corvette brg. retainer part no.-Joe L.

Michael,

Never seen a 63 Muncie or T-10 with a cast iron retainer. They use the 3 speed front bearing and have to use the small bolt pattern with that small hole bellhousing.
Have used a cast iron retainer on the 63's before but had to use a 64 or newer bellhousing.

JR

[Joe R.]

Re: 63 corvette brg. retainer part no.-Joe L.

Edward-----


Retainer GM #3859032 is not applicable to 63 Corvettes. It is applicable to 66-70 Corvettes with 3 speed as well as other applications.

Welcome to the program Joe!

JR

[John H.]

Re: 63 corvette brg. retainer part no.-Joe L.

The original aluminum '63-only T-10 front bearing retainer was casting #3790278, later replaced by the iron #604932 due to galling problems with the aluminum part.

[Edward J.]

Re: 63 corvette brg. retainer part no.-Joe L.

Joe,

There were two different front bearing retainers used for 63. One was cast iron and the other was aluminum. I think the aluminum retainer was discontinued at some point during the 63 model run and replaced by the iron unit. The 604932 iron retainer was available for a few decades after 63 so it's probably the only NOS retainer that will ever be on ebay.
I don't remember the casting number for either retainer.

Mike, Has this no.(604932) been around for many years, I googled the part no. and it seems that there is a Vintage Auto Parts INC. listing it as a GM 1940 - 54

[Michael H.]

Re: 63 corvette brg. retainer part no.-Joe L.

The original aluminum '63-only T-10 front bearing retainer was casting #3790278, later replaced by the iron #604932 due to galling problems with the aluminum part.

Yup, and that change probably occured somewhere around mid 63 production.
It first apeared in the parts book as a change in August 1963, several months after the change in production.

[Michael H.]

Re: 63 corvette brg. retainer part no.-Joe L.

Mike, Has this no.(604932) been around for many years, I googled the part no. and it seems that there is a Vintage Auto Parts INC. listing it as a GM 1940 - 54

Yes, it was first used in 1940-54 pass cars, 1941-47 comm/truck, and 63 pass/Corvette.

[Edward J.]

Re: 63 corvette brg. retainer part no.-Joe L.

Guys, thanks for all the replys and your help.

[Joe R.]

Re: 63 corvette brg. retainer part no.-Joe L.

That's strange that they never used the cast iron bearing retainer on the 63 Muncie. It also had the 3790278 bearing retainer. The first 63 Muncie I had was in the 14,000 mid range.

I always thought that retainer was used because of the bellhousing's smaller hole also used in all 63 GM 4 speed applications.

JR

[Michael H.]

Re: 63 corvette brg. retainer part no.-Joe L.

I always thought that retainer was used because of the bellhousing's smaller hole also used in all 63 GM 4 speed applications.

JR

Yes, that's correct. All 63 Corvettes used the 421 bell housing with the small hole and all 63 3 and 4 speed transmissions used the small 4 3/16" bearing retainer. It was the only year that Corvette/pass used the small retainer. The later 63 release 604932 iron retainer was small diameter, just like the aluminum 3790278.

For 64 and later, the larger 4 3/4" 62 and earlier style bearing and retainer were used.