You can change the front bearing retainer for the smaller size. I have an od trans and big block bellhousing. I got the new bearing retainer online with the 4.8 register for the bellhousing
Was that a stock early input bearing retainer? I have been looking for a casting number 4202507 or 3743859 bell housing with no luck of finding one. I do have a cast iron case OD transmission(1 year only). Hmmm... If anyone has one of the Overdrive bellhousings that I just mentioned for sale, please let me know. Otherwise I may have to try what 71GSSDemon did...
