I have an fbody 700r4 w id 3s 7ymm149a. need to know what yr it is & if it has 27 or 30 spline inputshaft . this will help decide weather i use it in my streetrod or not. if anyone knows plz help or direct me where i can find out, thanx

 

http://www.hotrodders.com/articles/T...ification.html

After figuring out the year you can do a quick search to determine which years came with the different input shafts.