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1st Generation 1964 1/2 - 1973 - Questions & general discussions that apply to a specific year => 1966 Mustang => Topic started by: geicoman58 on April 30, 2017, 01:08:45 PM

Title: Numbers for a 66 hipo 9'' 3rd member
Post by: geicoman58 on April 30, 2017, 01:08:45 PM

Hi folks, I own an April Dearborne built 66 hipo automatic gt f.b., Many years ago I swapped out the original case and now I would like to go back to the correct stamping number unit as I may need to build a different rear for the car. Any ideas what to look for? I have a C7AW but would like to try and get a correctly stamped one if its out there!

Title: Re: Numbers for a 66 hipo 9'' 3rd member
Post by: J_Speegle on May 02, 2017, 07:06:00 PM

Believe your looking for the single vertical ribbed, no plug C4AW-4205-A (casting number) case with the C5AW 4668A (casting number) pinion retainer

Welcome to the site.

Title: Re: Numbers for a 66 hipo 9'' 3rd member
Post by: Morsel on May 02, 2017, 07:48:01 PM

Quote from: geicoman58 on April 30, 2017, 01:08:45 PM

Hi folks, I own an April Dearborne built 66 hipo automatic gt f.b., Many years ago I swapped out the original case and now I would like to go back to the correct stamping number unit as I may need to build a different rear for the car. Any ideas what to look for? I have a C7AW but would like to try and get a correctly stamped one if its out there!

We should swop some pictures of our cars, I too own a 1966 Automatic GT K-Code fastback built in San Jose on February 10th of 66. Would love to see some shots since our cars are so similar and a little on the rarer side being automatics...

Thanks,

Jason

Title: Re: Numbers for a 66 hipo 9'' 3rd member
Post by: geicoman58 on May 03, 2017, 07:45:45 AM

Thank you Jeff and Jason! That should be an easy enough case to find, now getting close on the date code.............Anyways, yes, our cars were rare birds. I bought mine back in 78 only because I  needed an automatic due to a knee injury leaving me unable to drive my 56 f100. I did not know what I was buying at the time.  I will try to add some photos to my profile and fill it out a little better, maybe an introduction post as well. Great site with a wealth of knowledge. I am usually over at v.m.f. as well, but want to branch out!

Title: Re: Numbers for a 66 hipo 9'' 3rd member
Post by: 67350#1242 on May 03, 2017, 11:16:20 AM

Jeff,   would these casting numbers also apply to the 1967 HiPo case and retainer?

Title: Re: Numbers for a 66 hipo 9'' 3rd member
Post by: J_Speegle on May 03, 2017, 08:16:48 PM

Quote from: 67350#1242 on May 03, 2017, 11:16:20 AM

Jeff,   would these casting numbers also apply to the 1967 HiPo case and retainer?

Yes and no for the main case. Can't comment on the pinion retainer for the K code being the same the complete year

Believe there were two versions used in 67 do it depends on when the car was built

Title: Re: Numbers for a 66 hipo 9'' 3rd member
Post by: Bob Gaines on May 04, 2017, 12:07:43 AM

Quote from: J_Speegle on May 03, 2017, 08:16:48 PM

Yes and no for the main case. Can't comment on the pinion retainer for the K code being the same the complete year

Believe there were two versions used in 67 do it depends on when the car was built

To add - 66 and 67 pinion shields are different too.