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which hemi rockers have the most accurate ratios? #1941676
10/30/15 02:30 PM
10/30/15 02:30 PM
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BC Canada
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ogopogo Offline OP
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I am putting together a hemi right now and have several sets/brands of non roller rockers here and decided to check my lift at the cam and at the retainer and I am astonished at how much variance there is on the actual rocker ratios.ratios are all out of whack,some too little some too much,i have one intake rocker that put the spring into coil bind even.
Anyway,excluding the super high end stuff like barton ,stage V etc,which affordable rockers will work and be accurate out of the box if any?
indys,snobars and now mancini has rockers,these are the ones that interest me most as they are reasonable $$$.
would like to hear from some hemi builders who have used and checked any of these brands...

Re: which hemi rockers have the most accurate ratios? [Re: ogopogo] #1941677
10/30/15 02:37 PM
10/30/15 02:37 PM
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BC Canada
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ogopogo Offline OP
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the new mancini ones,made by CW?

http://www.manciniracing.com/indy14.html


Last edited by ogopogo; 10/30/15 04:12 PM.
Re: which hemi rockers have the most accurate ratios? [Re: ogopogo] #1941702
10/30/15 04:09 PM
10/30/15 04:09 PM
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Utah and Alaska
astjp2 Offline
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stageV, spend the money


1941 Taylorcraft
1968 Charger
1994 Wrangler
1998 Wrangler
2008 Kia Rio
2017 Jetta

I didn't do 4 years and 9 months of Graduate School to be called Mister!
Re: which hemi rockers have the most accurate ratios? [Re: ogopogo] #1941760
10/30/15 06:05 PM
10/30/15 06:05 PM
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New York
polyspheric Offline
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Doesn't RAS have a blueprint service for this?


Boffin Emeritus
Re: which hemi rockers have the most accurate ratios? [Re: ogopogo] #1941891
10/30/15 11:02 PM
10/30/15 11:02 PM
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Utah and Alaska
astjp2 Offline
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Spent the money for the RAS and still had to buy some stageV's, there is a reason they are the best, also consider dechellies shafts, they had the nicest fit and finish that I have seen on any of them. Tim

Mine were better after the RAS blueprint, stock widepads but they were only 1.36-1.4 ratio at best, the stageVs are 1.51~1.52 consistently on the ones that I used. Tim


1941 Taylorcraft
1968 Charger
1994 Wrangler
1998 Wrangler
2008 Kia Rio
2017 Jetta

I didn't do 4 years and 9 months of Graduate School to be called Mister!
Re: which hemi rockers have the most accurate ratios? [Re: astjp2] #1941898
10/30/15 11:07 PM
10/30/15 11:07 PM
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Lima, Peru
domingo Offline
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stage Vs.

Or get a set of widepad stock rockers and send em to be rebuilt to rocker arm unlimited. they do great work and will blueprint ratios. stock non roller rockers work great.

http://www.rockerarms.com/

Last edited by domingo; 10/30/15 11:09 PM.
Re: which hemi rockers have the most accurate ratios? [Re: ogopogo] #1941902
10/30/15 11:13 PM
10/30/15 11:13 PM
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Bend,OR USA
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Cab_Burge Offline
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I check two and half set of stock ductile iron rockers back when I was racing a 426 Hemi in NHRA stock, I saw over .130 varience on the exhaust rockers and similar on the intakes checking them on teh same cam lobes and valve settings, zero lash with soft checking springs shock puke : That is one of the many reasons I call them 426 motors "Hemiroids" whistling shruggy
That being said I have a customer who I had started buying parts for large C.I. pump Gas hemi motors several years back , he had some business and family health problems that stop the build until today. He called and said he is now ready to finish buying the remaining parts,(I have a set of cast aluminum valve covers and a 4.500 bore World block so far) I'll buy him a set of Stge V heads and rockers for this build up Maybe even there cast aluminum dual four intake if he decides to go with carbs. instead of EFI work

Last edited by Cab_Burge; 10/30/15 11:16 PM.

Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
Re: which hemi rockers have the most accurate ratios? [Re: ogopogo] #1941933
10/31/15 12:06 AM
10/31/15 12:06 AM
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gulfport, ms, west mi
rowin4 Offline
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If you read the Mancini add, the price listed does not include the shafts , springs or the stands, just the rockers and adjusters. So when you purchase the rest I bet you are close to Stage V cost. Just spend the money on stage V and be happy for the rest of your Hemi days


it's ok to butt heads, just don't do it with a butthead
Re: which hemi rockers have the most accurate ratios? [Re: rowin4] #1941970
10/31/15 01:24 AM
10/31/15 01:24 AM
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San Jose Ca.
boatracer572 Offline
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While there not cheap, the new cam Fx tool steel hemi rockers are about as accurate and strong as you can get......

image.jpg
Re: which hemi rockers have the most accurate ratios? [Re: boatracer572] #1942008
10/31/15 07:21 AM
10/31/15 07:21 AM
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NJ
SSDAcuda Offline
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Talking best?? When $ isn't in the equation… Ray Barton shaft rockers are the best!



Never ran the cam f/x but their lifters and customer service leaves a lot to be desired. And I ran Jesel's before and am a big supporter of ALL there products, and YES, RBRE rockers ARE THE BEST!! May cost a little more, but your buying them only once! twocents


SS/DA 1924
Re: which hemi rockers have the most accurate ratios? [Re: ogopogo] #1942028
10/31/15 09:43 AM
10/31/15 09:43 AM
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Benton, IL.
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DaveRS23 Offline
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Has anyone checked the accuracy of the DLI rockers? I have a set on one engine and have another set to go on the next project. They are certainly durable enough, but I had never thought to check their ratios until lately with all these posts.


Master, again and still
Re: which hemi rockers have the most accurate ratios? [Re: DaveRS23] #1942258
10/31/15 02:26 PM
10/31/15 02:26 PM
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Bend,OR USA
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You should really check every Hemiroid rocker ratio at the valves on any rocker arm your going to use thumbs twocents I use a set of checking springs and on one side of the motor and swap the rocker assemblys only, I set the lash at zero and carefully align the dial indictor stems to match the angles of the valve stems thumbs

Last edited by Cab_Burge; 10/31/15 02:28 PM.

Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
Re: which hemi rockers have the most accurate ratios? [Re: astjp2] #1942282
10/31/15 03:15 PM
10/31/15 03:15 PM
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Taxes & Virus's R-US, NY
Dragula Offline
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I have the Indy chromemoly roller rockers....They have a tad higher ratio than OEM. Although, I have not checked the accuracy of the ratio's but they have taken a beating over the years and held up well.

Would sell them to switch to Barton later this winter maybe.....



'70 Cuda,...605 EFI Hemi Street Car (6.20 best pass, 1.33 60ft)
https://www.youtube.com/watch?v=WYw6RA-k5Bk (6.25 at 108.75mph from inside car)
https://www.youtube.com/watch?v=3zQEb9uxFng (6.25 at 108mph from outside car)
https://www.youtube.com/watch?v=JCvfzsC4NgM (9.9)

'66 Barracuda AWB Stretched nose Blown 440 Car in build stage

'71 Duster Drag Car 400 Low Deck 512 best 6.002 at 115.44mph
https://www.youtube.com/watch?v=Znuo3jMUXTk
Re: which hemi rockers have the most accurate ratios? [Re: SSDAcuda] #1942295
10/31/15 03:41 PM
10/31/15 03:41 PM
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San Jose Ca.
boatracer572 Offline
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[quote=SSDAcuda]Talking best?? When $ isn't in the equation… Ray Barton shaft rockers are the best!



Never ran the cam f/x but their lifters and customer service leaves a lot to be desired. And I ran Jesel's before and am a big supporter of ALL there products, and YES, RBRE rockers ARE THE BEST!! May cost a little more, but your buying them only once! twocents [/quote


Sorry to hear you had a bad experience with Cam Fx parts.......The rocker arms that Ray Barton sells for his hemi's are actually made by t&d.. And without a doubt there is absolutely nothing wrong with T&d rocker arms. I have been running t&D machine parts for years myself also. It is just nice to have a choice.and to see a new manufactur bring a really nice bulletproof piece to the market for our old Mopar's.....all cam fx rocker body's have a LIFETIME WARRANTY for breakage....

Last edited by boatracer572; 10/31/15 04:07 PM.
Re: which hemi rockers have the most accurate ratios? [Re: ogopogo] #1942751
11/01/15 08:54 AM
11/01/15 08:54 AM
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Norwich CT USA
Defbob Offline
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Did CamFX come out with street Hemi rockers? I know they have Fathead rockers like the ones pictured above.

Re: which hemi rockers have the most accurate ratios? [Re: ogopogo] #1942753
11/01/15 09:00 AM
11/01/15 09:00 AM
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Norwich CT USA
Defbob Offline
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Manton billet Top fuel rockers on a street Hemi...

Re: which hemi rockers have the most accurate ratios? [Re: ogopogo] #1943496
11/02/15 05:48 AM
11/02/15 05:48 AM
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East Coast, NJ
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fig426 Offline
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Maybe I should have payed closer attention to my stock rockers.

image.jpg

Chris from New Jersey
Re: which hemi rockers have the most accurate ratios? [Re: fig426] #1943537
11/02/15 10:05 AM
11/02/15 10:05 AM
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Taxes & Virus's R-US, NY
Dragula Offline
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Originally Posted By fig426
Maybe I should have payed closer attention to my stock rockers.


Been there, done that....More than once, actually. Its usually not the rockers that cause that. Generally there was another cause. Too much rpm for the springs your running is the main reason we see, or lack of a rev limiter. Or what have seen more recently, the groove between the valve & the lock gets wiped out and drops a valve. Bad locks...But not usually the rockers fault.


'70 Cuda,...605 EFI Hemi Street Car (6.20 best pass, 1.33 60ft)
https://www.youtube.com/watch?v=WYw6RA-k5Bk (6.25 at 108.75mph from inside car)
https://www.youtube.com/watch?v=3zQEb9uxFng (6.25 at 108mph from outside car)
https://www.youtube.com/watch?v=JCvfzsC4NgM (9.9)

'66 Barracuda AWB Stretched nose Blown 440 Car in build stage

'71 Duster Drag Car 400 Low Deck 512 best 6.002 at 115.44mph
https://www.youtube.com/watch?v=Znuo3jMUXTk
Re: which hemi rockers have the most accurate ratios? [Re: fig426] #1943570
11/02/15 10:54 AM
11/02/15 10:54 AM
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Posts: 9,672
Lima, Peru
domingo Offline
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Originally Posted By fig426
Maybe I should have payed closer attention to my stock rockers.


Dont blame the stock rockers!!! Look for your problems someplace else!!!


Last edited by domingo; 11/02/15 10:55 AM.
Re: which hemi rockers have the most accurate ratios? [Re: ogopogo] #1943585
11/02/15 11:19 AM
11/02/15 11:19 AM
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Eighty Four, PA
B G Racing Offline
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It's mostly true that when you have a valve train issue it is usually caused by something other than a rocker arm.We found that the rockers for hemis offered on ebay and other site that are made in Canada or off shore to be junk.The rollers and pins are not hardened,the ratios are all over the place,adjusters are junk as is the thread pitch in the rocker.
If cost is no concern then The Jesel and T&D(Barton)and StageV are the best option.We have never had an issue with Indy rockers and run them on most all our hemis including Don's blower car,zero failures.The stock rockers are strong but need to be corrected for all out race application,for the street/strip they work fine.Landy,(if you can find them) have had pin issues and Norris(same) have pin and clearence issues,We have no experience with any other brands.Stay away for the Canada(ebay) junk.

Last edited by B G Racing; 11/02/15 11:26 AM.
Re: which hemi rockers have the most accurate ratios? [Re: B G Racing] #1943732
11/02/15 03:01 PM
11/02/15 03:01 PM
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Canada
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Originally Posted By B G Racing
It's mostly true that when you have a valve train issue it is usually caused by something other than a rocker arm.We found that the rockers for hemis offered on ebay and other site that are made in Canada or off shore to be junk.The rollers and pins are not hardened,the ratios are all over the place,adjusters are junk as is the thread pitch in the rocker.
If cost is no concern then The Jesel and T&D(Barton)and StageV are the best option.We have never had an issue with Indy rockers and run them on most all our hemis including Don's blower car,zero failures.The stock rockers are strong but need to be corrected for all out race application,for the street/strip they work fine.Landy,(if you can find them) have had pin issues and Norris(same) have pin and clearence issues,We have no experience with any other brands.Stay away for the Canada(ebay) junk.


and here I thought Canada was fairly decent and manufacturing goods.

Re: which hemi rockers have the most accurate ratios? [Re: CTD5.9] #1943782
11/02/15 04:05 PM
11/02/15 04:05 PM
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Lima, Peru
domingo Offline
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Originally Posted By rednuck
Originally Posted By B G Racing
It's mostly true that when you have a valve train issue it is usually caused by something other than a rocker arm.We found that the rockers for hemis offered on ebay and other site that are made in Canada or off shore to be junk.The rollers and pins are not hardened,the ratios are all over the place,adjusters are junk as is the thread pitch in the rocker.
If cost is no concern then The Jesel and T&D(Barton)and StageV are the best option.We have never had an issue with Indy rockers and run them on most all our hemis including Don's blower car,zero failures.The stock rockers are strong but need to be corrected for all out race application,for the street/strip they work fine.Landy,(if you can find them) have had pin issues and Norris(same) have pin and clearence issues,We have no experience with any other brands.Stay away for the Canada(ebay) junk.


and here I thought Canada was fairly decent and manufacturing goods.


I bet the stuff comes from China for resale!!!

panic

Re: which hemi rockers have the most accurate ratios? [Re: CTD5.9] #1943799
11/02/15 04:31 PM
11/02/15 04:31 PM
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Posts: 9,910
Eighty Four, PA
B G Racing Offline
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and here I thought Canada was fairly decent and manufacturing goods. [/quote]

They are most likely from off shore manufactures.We seen them eat up the rollers and pins is less than a few hundered miles.We seen the adjusters slip out of the threads and the stands not locate on the head bolt holes and alignment pins as well as the stand holes for the shafts be so far off when the stands are attached to the heads the shafts won't go through all the holes.
The warning should be quite easy to figure when they offer the complete assembly for around $1500 when most Mopar and Indy cost around $2000+ .Going cheap will end up costing a lot more in the end.The vender is in Canada but that doesn't mean they were manufactured there.

Last edited by B G Racing; 11/02/15 04:32 PM.
Re: which hemi rockers have the most accurate ratios? [Re: B G Racing] #1943919
11/02/15 07:47 PM
11/02/15 07:47 PM
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BC Canada
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ogopogo Offline OP
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BG,I was hoping you would check this thread out.have you ever checked the ratios on a set of indys just to see if they are all the same ratio(consistent),just curious...

Re: which hemi rockers have the most accurate ratios? [Re: ogopogo] #1944335
11/03/15 11:19 AM
11/03/15 11:19 AM
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Eighty Four, PA
B G Racing Offline
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Yes,Indy's ratios are better than most but still need to be checked.Usually we see the intakes on the + side of 1.6 and the exhaust on the + side of 1.55 not many on the -side.StageV,T&D and Jesel are close as it gets.Mopar,Landy and Norris need to be checked and corrected if necessary.As mentioned their all in the ballpark for street or mild race,just stay away from the ebay cheap knockoffs
When we first started dealing with Indy we checked and modified the hemi rockers but that was 15 or 16 years ago,the quality seems much better today.

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