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Cleveland experts, help needed on rocker arms

noquarternoquarterMember
Hi
My stock rocker arms were stamped steel with fulcrum, non adjustable. They had a "7" marking on the baffle-like extension just above the pushrod hole. As part of a restoration I bought what I thought were the same non-adjustable fulcrum rocker arms from Summit. They look alike-ish but has a "3" stamped on them. They also require significantly shorter rods for sure, but what else is the difference between them? Is the ratio different?

Can I use the old rocker arms with the new fulcrums, the fulcrums look totally alike?

Final question: the fulcrums have oil channels cut into them, not parallel but like an arrow head. Should the point of the "arrow" point towards the pushrod or the valve?

Tough one, I know... Eeker
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lf-tp2511lf-tp2511Member
quote:
CCA-1232-16

This part number is for 351C and 429/460 stock rocker arm replacement.

I can see no reason why they will not work for your stock engine.

The stamped numbers are most likely something to do with manufacturing not a different size or such.

I do not understand why you say you will need different length push rods. These rockers should be a dead-on match for your stockers.

As for the arrow slots, they seem like a design meant to gather oil. Since no oil is coming from the valve side, I'd aim them to the pushrod. Surely, Comp cams should know this answer??!!

Larry
noquarternoquarterMember
You're right, they should, but they're not. And that's what neither Summit or Comp Cams can explain Since my posting I've found what I believe are the right ones at Summit, Sealed Power ZR855, they also have the 7 stamping, if only I'd found those before, but the Comp Cam set description sounded right.

That they are very different can be seen below, as a warning to others. The old with "7" is at the back of the picture

About the way the fulcrums point, Comp Cams says it doesn't matter

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Last edited by noquarter
lf-tp2511lf-tp2511Member
quote:
neither Summit or Comp Cams can explain

Perhaps something was mis-packaged?

I would suggest you look into the bolt-on (no machining) Ford Racing roller rocker conversion.

I did this two years ago on 2511, installed myself, and have put 1000's of miles on them with zero problems.

Link to my initial posting on these is here:

http://tinyurl.com/ma835y

You will need the shim kit for these to get preload correct. Yes, I know hydraulic lifters are self-adjusting, but with this set-up, you need to shim them to get things in proper position. Time consuming, but not difficult. And I'll gladly help you out with advice if you choose this route.

Larry
Last edited by lf-tp2511
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