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Will these work on 304?
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75Cj5 View Drop Down
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    Posted: May/05/2021 at 11:56am
I have been trying to find full roller rockers that fit my budget... It is next to impossible, but I found these.  The ratio and capacities seem to line up but don't want to dig back into this motor for a third time because I made an assumption.  

They say that these are for Ford small block, has anyone used rockers that do not "specifically" say they are for AMC?

Thanks.
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Points: 4085 		Post Options Post Options   Thanks (0) Thanks(0)   Quote tufcj Quote  Post ReplyReply Direct Link To This Post Posted: May/05/2021 at 12:06pm
The problem you will have is that if you have 75 heads with bridged rockers, you will have to buy either Harland-Sharp or Scorpion rockers designed for the bridged heads.   If not, you will need to machine the pedestals about .375" and have them drilled/tapped for GM style studs.  You will need to run guide plates and possibly a different length pushrod.   Someone here had a writeup on using junkyard LS rockers, but I think they're a 1.7 ratio.

Bob
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Originally posted by tufcj tufcj wrote:

The problem you will have is that if you have 75 heads with bridged rockers, you will have to buy either Harland-Sharp or Scorpion rockers designed for the bridged heads.   If not, you will need to machine the pedestals about .375" and have them drilled/tapped for GM style studs.  You will need to run guide plates and possibly a different length pushrod.   Someone here had a writeup on using junkyard LS rockers, but I think they're a 1.7 ratio.

Bob
tufcj   

Ok, I am dropping heads off at the shop today so I can have them setup with studs. 

These say they are self aligning, I went with these because I didn't want to mess with the guide plates.

I did see the other posts but it was a little different than this so thought the questions was reasonable. 

Thank you!
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Unless I missed it the only thing I see in the spec is self locking,  didn't see any mention of self aligning.
How much does machine work and related pieces add to the price over a correct set of rollers for that head style?
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I thought scorpion recently started offering roller rockers for bridged rocker heads.  They can’t be crazy money....  Andy
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The LS rockers are something I believe JCISWORTHY was doing with success, dont know what heads he was starting with or if any machining was needed.  He is a engine builder so an added step when rebuilding a set of heads is not a big deal.  Andy
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Originally posted by Heavy 488 Heavy 488 wrote:

Unless I missed it the only thing I see in the spec is self locking,  didn't see any mention of self aligning.
How much does machine work and related pieces add to the price over a correct set of rollers for that head style?

Heavy 488, it is the seventh line on the overview that addresses the self aligning.

I was just going over the numbers again.

It was suggested I got full roller vs. roller tip... If I went roller tip then I can get the rockers, studs and guide plates for around $200.  Plus another $100 or so for head machining. So roller tip rockers $300-$400.

I have not seen any of the other rockers for less than $350... plus they are require the studs and prep work too, so another $150-$200.

I may be missing something so please correct me if I am wrong. 
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Originally posted by 75Cj5 75Cj5 wrote:

Originally posted by Heavy 488 Heavy 488 wrote:

Unless I missed it the only thing I see in the spec is self locking,  didn't see any mention of self aligning.
How much does machine work and related pieces add to the price over a correct set of rollers for that head style?

Heavy 488, it is the seventh line on the overview that addresses the self aligning.

I was just going over the numbers again.

It was suggested I got full roller vs. roller tip... If I went roller tip then I can get the rockers, studs and guide plates for around $200.  Plus another $100 or so for head machining. So roller tip rockers $300-$400.

I have not seen any of the other rockers for less than $350... plus they are require the studs and prep work too, so another $150-$200.

I may be missing something so please correct me if I am wrong. 



And looking at it this way... there is not much difference in cost.  So I guess what makes the most sense is not what I am going to be working on.
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Originally posted by brownspirit brownspirit wrote:

I thought scorpion recently started offering roller rockers for bridged rocker heads.  They can’t be crazy money....  Andy

I haven't seen this but I am going to look some more.

Thanks!
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Harland sharp S-40046A.
These bolt on to a bridged rocker head style
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