What's the difference in Rocker Arms?

[DanR]

What is the difference between the Series IV and Series V Rocker arm assemblies?

Or should I ask "if" there is a difference?

I have a set of rockers that are much smaller than the set on my SV. Don't understand why they are so much smaller.

Can't remember where they came from unless they were on one of my SIV's....

Were the SI's, II's or III's perhaps different?

 

[George Coleman]

They may be the inner rockers?

 

[DanR]

For sure, George! I didn't think of that

 

[RootesRacer]

All series alpines used the same rockers, there are 2 parts to a set, 4 each.
The only difference in the 2 parts is the direction that the rockers deflect relative to the center of the rocker.

If you have rockers with a smaller radius, its to a different engine.

 

[Rootes 66]

Dan
The Rootes vehicles with the Iron head used a similar rocker but about 1/8" shorter, My guess is that is what you have.
Pete

 

[DanR]

Rootes 66,

Your answer must be what I have in rocker arms. However, none of my heads are Iron Heads.

Where these came from I have no idea.

If any one out there needs them they will be available. I believe they are servicable.

Thanks Pete for the help!