What Rocker Arms Are These?

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mopowers

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Can anyone help me identify these small block rocker arms? The are unmarked, un-bushed, and have ball style adjusters. They came with steel spacers too. Are they older versions of the Comp rockers?

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I suppose it could be some real early Comp, but the ones I’ve seen have the “CC” cast into them.
My guess would be they are a Chinese copy from a while ago, like from CAT or some similar brand.

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I had 2 sets of legitimate Comp Magnum ones circa 1996-ish and they looked just like yours. Below is a pic from a set I sold. FYI These were LA rockers.

So they could be Comp Magnum.

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What letter is that in the middle? Looks like an H. Maybe Hughes?
 
Do you happen to have a photo of where the adjuster nut seats against the rocker body?

I don't think I do, I'll need to look. Both sets are long gone. The one picture I posted was from my original sale add on this site.
 
Those look like the Comp more than the Hughes for sure.
 
Those Hughes ones aren't made by (or for) Hughes. They're just the standard PRW stainless rockers - still good rockers in my opinion. I've got them on my 340. They're very different from these ones though. They're bushed with cup-style adjusters and just look different.

I think I've figured it out though. Pretty sure these ones are the old-style Comp "magnum" rockers (#1420)

Here's an old thread all about them: Roller Rockers Geometry
 
Do you guys think there'd be any issues running these rockers with a 230* @.050, .550" lift cam. The lack bushings concern me a little.
 
The earlier Comp rockers(prior to them being bushed) came with the recommendation of 350lbs max open spring force.

I’d also use high zinc oil.

I did have some issues with the unbushed rockers and roller cams using springs that had about 525lbs open force.
Actually, now that I think of it....... one of the problems was with a SFT cam application and just under 400lbs open.
BUT, they were running gas mileage type Mobil 1.
 
The earlier Comp rockers(prior to them being bushed) came with the recommendation of 350lbs max open spring force.

I’d also use high zinc oil.

I did have some issues with the unbushed rockers and roller cams using springs that had about 525lbs open force.
Actually, now that I think of it....... one of the problems was with a SFT cam application and just under 400lbs open.
BUT, they were running gas mileage type Mobil 1.

This is great info. Thank you sir! I wonder if Rocker Arms Unlimited could install bushings. I'm thinking it'd be cost prohibitive though. I may call them tomorrow. If it's too much, I may just sell these and put the cash towards a different set.
 
This is great info. Thank you sir! I wonder if Rocker Arms Unlimited could install bushings. I'm thinking it'd be cost prohibitive though. I may call them tomorrow. If it's too much, I may just sell these and put the cash towards a different set.
My Mopar performance aluminum roller rockers don’t have any bushings. Bare aluminum runs on the shaft. Over 700 pounds open spring pressure. These are 20 years old. Made by Crane. Kim
 
I remember one of the big name builders on here showing how the PRW rockers were really crappy as far as alignment of the roller tip to the center line of the valve stem. Looking at the roller tip from straight on, you could see a lot of space on one side or the other of the valve tip. It was pretty ridiculous.
 
The earlier Comp rockers(prior to them being bushed) came with the recommendation of 350lbs max open spring force.

I’d also use high zinc oil.

I did have some issues with the unbushed rockers and roller cams using springs that had about 525lbs open force.
Actually, now that I think of it....... one of the problems was with a SFT cam application and just under 400lbs open.
BUT, they were running gas mileage type Mobil 1.

I wonder if an induction hardened shaft would cure the issue? I run them with a set of some. 480 open. No issue so far .
 
I remember one of the big name builders on here showing how the PRW rockers were really crappy as far as alignment of the roller tip to the center line of the valve stem. Looking at the roller tip from straight on, you could see a lot of space on one side or the other of the valve tip. It was pretty ridiculous.
i guess you could cure that if bushing them though?
 
In the instances I’ve seen them be a problem, it’s been one rocker welding itself to the shaft.
The other 15 are still perfect......... as well as the shafts, in the other 15 positions.

It also took a period of time before they had an issue.
A couple of seasons of regular bracket racing.
The first one I chalked up to “**** happens”, after the second one(different engine), I decided I wouldn’t be running them with roller cams anymore.
The third one was being run with a SFT cam with beehive springs, and had seen a lot of racing and probably 10k street miles before it had an issue.
I blamed that one on the oil.
 
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