How to determine roller block or not

[gzminiz]

I picked up a 351W (free) and I am pulling it apart, how can I tell whether it is a roller block or not?

 

[brianj5600]

What is the casting #? I think all the roller blocks are F4TE.

 

[65ShelbyClone]

There will be a sheetmetal "spider" in the lifter valley held down with two screws in the center of the valley. Also, the blocks are indeed F4 castings.

 

[tylerrocks]

look at the lifters.

Tyler

 

[10secgoal]

shelby and tyler are right. Some blocks are roller, but don't come with roller lifters. Sgould find if nothin elde, hole in the lifter valley that a valve cover bolt will fit