how to tell a roller?

[Venomous94Cobra]

hey guys i just picked up my new 351w's, there come out of 94 vans, i thought that all 351w's after 93 or 94 were roller motors? but when i pulled the valve covers off there were regular rocker arms, not roller rockers? the valve covers showed the 1994 manufacting date, but these motors were jasper reman motors so i know there not the originals.

 

[modo]

hey guys i just picked up my new 351w's, there come out of 94 vans, i thought that all 351w's after 93 or 94 were roller motors? but when i pulled the valve covers off there were regular rocker arms, not roller rockers? the valve covers showed the 1994 manufacting date, but these motors were jasper reman motors so i know there not the originals.


roller motor would be the cam shaft. casting number on the block would tell you but being its a reman motor you don't know what was put back in it. easiest way to tell is yank the intake and pull a lifter

 

[Venomous94Cobra]

so it can have a roller cam in it with standard rocker arms? thats what i was unsure about, still learning the pushrod scene lol

 

[Addermk2]

the term "roller motor" does not refer to the rocker arms. It refers to the lifters.

This is a roller lifter

this is a flat tappet lifter (not a roller)

once you remove the intake manifold and pushrods, you can pull these out and look at them to see which you have.
Getting a non roller block isnt the end of the world either. you can get conversion lifters (link bar lifters) and still run a roller cam

 

[Venomous94Cobra]

thanks guys, i know the differences actually as far as what each looks like and what they do i just wasnt certain that a roller motor came with or without roller rockers, but i do now, i just havent pulled the intake manifolds off yet but i will tomorrow afternoon, thanks again for yalls help.

 

[Win]

From my research starting in 94 the 351w were roller ready.