I have a 1989 ford f150 with a 351. I wanted to know if i have hydrualic flat tappet or hydraulic roller tappet. Im think its hydrualic roller tappet i just want to make sure. And if it is the hyrdulic roller tappet then how hard is it to change it to hydrualic roller tappet?

 

Bump

 

You will probably get a better response in the pre-1997 forum. This V-8 Engines forum is primarily for the Triton and newer engines.

 

Thanks