I have a 95 f-150 1/2 ton truck with 351 how can i tell if it's roller, are not i see autozone sales to different lifters 1 roller, 1 non-roller for this truck, if it's roller i may pull it out and hold on to it

 

If it is an original engine it will be a roller. 1994 and up I believe were roller 351W. Just check the engine block down by the starter look for an F4 in the casting number. This will give you the year of the engine block. In this case 94.

Joe