Posted by Robert Kosusnik on Wednesday, November 28, 2001 at 1:35AM :
In Reply to: fan pulley,do,s and don"t,s?? posted by dean on Tuesday, November 27, 2001 at 9:16PM :
The larger diameter pulley is for an M37 I believe. If the timing indicator on a 251 engine is in the same place as on a 230 engine, the larger pulley will hit the timing indicator unless your engine has an M37 timing chain case cover. Robert