hi, can someone please tell me if all sierra cosworth crankshafts are exactly the same spec as i have 3 cosworth crankshafts in front of me and one aux pulley, the pulley will slide onto 2 of them easy but will not go on the other at all, and it's that crank i wish to use. cheers

 

The nose of the cranks changed slightly for late cars. What pulley are you trying to use? V-belt or multi-V types.

 

multi v, the pulley is off a 89 not sure the year of the new crank, cheers

 

will it force on or should i try another pulley? cheers