CRG Discussion Forum

Camaro Research Group Discussion => Decoding/Numbers => Topic started by: Lukes 69 z28 on March 12, 2007, 04:00:18 AM

Title: 660 transmissions
Post by: Lukes 69 z28 on March 12, 2007, 04:00:18 AM
I looked at six 660 muncie transmissions today and I noticed that some of the 660 numbers were smaller on some trannys and larger on others . Was there a time frame that they casted the smaller and bigger numbers or is one for the 68 and other for a 69? thanks
Title: Re: 660 transmissions
Post by: Jerry@CHP on March 13, 2007, 07:54:37 PM
I have done more of these in my life than I care to talk about.  The smaller numbers are the earlier versions used in 1968.  This was changed sometime during the later part of 1968 in the early model '69s.  Very late '69s have 661 cases.

Jerry
Title: Re: 660 transmissions
Post by: Lukes 69 z28 on March 14, 2007, 01:12:18 AM
Thanks Jerry ,thats the answer I was looking for. Do you think the small letter 660 case would be correct  in an October 1968 build dated 69 camaro?Thanks for the help this is a great site, Luke
Title: Re: 660 transmissions
Post by: Jerry@CHP on March 14, 2007, 02:00:12 PM
I'll double check my notes when I get a minute.

Jerry
Title: Re: 660 transmissions
Post by: Jerry@CHP on March 14, 2007, 11:37:24 PM
Have Oct, Nov and Dec all with smaller numbers in my notes.

JM
Title: Re: 660 transmissions
Post by: Lukes 69 z28 on March 15, 2007, 02:14:35 AM
Thanks for the info Jerry this trans is mint and fresh at a great price so I am going to buy it.   Thanks again Luke

L


   
Title: Re: 660 transmissions
Post by: ChevyThunder on March 18, 2007, 08:01:24 AM
Very late '69s have 661 cases.

Jerry

Jerry , how late ? I never knew a 69 model year car could have a 661 case Muncie .
Title: Re: 660 transmissions
Post by: Jerry@CHP on March 18, 2007, 02:07:13 PM
Late very October and 11A cars have been found with 661 cases.  I know this because I rebuilt original transmissions for the vehicles.

Jerry
Title: Re: 660 transmissions
Post by: Gramps69Z on March 18, 2007, 02:19:17 PM
Jerry, should my 10E car have a 660, or 661 case?     VIN number 124379N704511
Thanks,

Fireman John
Title: Re: 660 transmissions
Post by: Jerry@CHP on March 18, 2007, 03:41:39 PM
It could but this transition was sporadic at best.  I have only seen a few with 661 case, not a lot.

If it were my car, I would go with a 660 case.

Jerry