![]() ![]() 1986 ½ can be found with 30 spline and without aux.1987’s use 30 spline input shaft versus 27, have auxiliary valve body, etc.1987 up is what most people think of for “better” cores, all 700r4’s can be made good just ask how.No Buick, Oldsmobile, or Pontiac cases ever made-ever!.2004-r shorter at 28 ½”, mount differs 28” versus 23 ½” 700R4, same yoke/different driveline length.TH350 short 6”, Jetaway, and aluminum Powerglide shorter at 28 ½” versus 31 ½” 700R4, same yoke, different driveline length, mount differs 22” versus 23 ½” 700R4. ![]() 29“ versus 31 ½ 700R4, different yoke (400 is bigger), different driveline length, mount 28 ¼” TH400 versus 23 ½” 700r4 Can replace a 9”TH350 easy, both 31 ½”, same yoke/driveline, mount differs 23 ½” versus 22” TH350.700r4 fits small and big block Chevy and GMC engines.He makes these Brief Lessons for many of the popular tranmissions. Ed seems like a great guy and ver knowledgable. He passed this info on to me today and thought it was worth posting. There's a local guy here in NorCal, Ed Okray, who has been recommended by members on this site. ![]()
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