I have a 1991 camaro z28 350, with 3.23 rear end. factory trans and motor. i want to change the torque converter to a 2500, and i keep seeing 27 spline and 30 spline. anyway to know without tearing apart to see??

 

you have a 30 spline shaft if the trans is a 92. 27 spline was 84 and before

 

^^ x2

 

Thanks.