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What BB rockers are you running on the street?
#1736078
01/22/15 01:16 AM
01/22/15 01:16 AM
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Joined: Jan 2003
Posts: 2,946
Windsor ,Ca.
Keith Richards
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Joined: Jan 2003
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Windsor ,Ca.
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Just as the title says, Well my '72 Road Runner has the original 400 that I stroked to 451 5-6 years back and haven't ran it much over the last few years maybe couple hundred miles a year if that, mostly because there is a bit of valve train noise above 2000 rpm (sewing machine like). I believe it is coming from the rockers. Last year I noticed the pushrods were a smidge short so I added longer ones to correct that and the noise is still there so pretty sure that my Crane gold rockers are not getting the oil they need at higher rpm or if they are worn or just the wrong application so have been thinking of getting a set of Harland Sharps? Have had great luck with them on my race motors and am guessing they would hold up well and run quieter? Cam lift is .494 Int - .513 Exh (Lunati Voo Doo) so nothing big. Just want a dependable set up as I want to get this car out more and to some shows,etc.
Last edited by Keith Richards; 01/22/15 01:19 AM.
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Re: What BB rockers are you running on the street?
[Re: Keith Richards]
#1736081
01/22/15 02:44 AM
01/22/15 02:44 AM
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Joined: Nov 2003
Posts: 36,041
Lincoln Nebraska
RapidRobert
Circle Track
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Circle Track
Joined: Nov 2003
Posts: 36,041
Lincoln Nebraska
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I would check the preload amt. If good I'd press straight down vertical on each rocker arm (lifter end) with a wooden hammer handle while idling & see if any of em get quieter or change tone. I would take them (if any) lifters out & dissassemble them/clean/reassemble & see if they get quiet & if not then new ones with a cam breakin procedure
live every 24 hour block of time like it's your last day on earth
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Re: What BB rockers are you running on the street?
[Re: RapidRobert]
#1736082
01/22/15 03:43 AM
01/22/15 03:43 AM
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Joined: Jan 2003
Posts: 2,946
Windsor ,Ca.
Keith Richards
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Windsor ,Ca.
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Pacnorthcuda & Dynamite, The Crane ductile Iron rockers idea I like and will look for a used set to see if that is the answer. FWIW Last time I had the Crane golds off making sure the oil holes were down the shafts looked good and not galled and unknown how much use is on the rockers but didn't look to worn from what I could tell on a non-rollerized aluminum lifter.
RapidRobert, The original lifters that came with the Lunati cam did this noise since initial break in and after taking a few of those apart thinking stuck plunger etc, still did it. Then was told to try a set of Comp lifters which I did and after break in same exact noise no change.
Here is more history on this motor if it helps, Originally built the motor with a Comp cam and didn't like the drivability with a 4 speed so ended up sticking this Lunati cam in and drivability is perfect, pulls hard right off idle to 5500, can't remember though if it had this noise with the original Comp as it was just to short of a powerband to work with the 4 speed as it was quite a few years back. The motor also has the 88cc Edelbrock heads out of the box on it if that matters. Also have played with preload from 1/2 turn to 1-1/2 turn and it just changes when the noise starts a bit, from idle -2000 it is quiet and has strong oil pressure on the rally gauge 9more than the last motor ) which was quiet with stock rockers.
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Re: What BB rockers are you running on the street?
[Re: Keith Richards]
#1736084
01/22/15 09:40 AM
01/22/15 09:40 AM
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Joined: Jan 2003
Posts: 75,080
U.S.S.A.
JohnRR
I Win
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I Win
Joined: Jan 2003
Posts: 75,080
U.S.S.A.
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Quote:
Just as the title says, Well my '72 Road Runner has the original 400 that I stroked to 451 5-6 years back and haven't ran it much over the last few years maybe couple hundred miles a year if that, mostly because there is a bit of valve train noise above 2000 rpm (sewing machine like). I believe it is coming from the rockers. Last year I noticed the pushrods were a smidge short so I added longer ones to correct that and the noise is still there so pretty sure that my Crane gold rockers are not getting the oil they need at higher rpm or if they are worn or just the wrong application so have been thinking of getting a set of Harland Sharps? Have had great luck with them on my race motors and am guessing they would hold up well and run quieter? Cam lift is .494 Int - .513 Exh (Lunati Voo Doo) so nothing big. Just want a dependable set up as I want to get this car out more and to some shows,etc.
I see you have a Lunati ... Does it have ramps like the Comp MM lobes , if so nothing you do is going to stop the noise , it's the nature of the beast .
If you think you are not getting oil at higher RPMs switching to a rocker that is going bleed the oil out faster is not the direction to go ....
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Re: What BB rockers are you running on the street?
[Re: JohnRR]
#1736085
01/22/15 11:57 AM
01/22/15 11:57 AM
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Joined: Jan 2003
Posts: 2,946
Windsor ,Ca.
Keith Richards
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Joined: Jan 2003
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Windsor ,Ca.
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Quote:
Quote:
Just as the title says, Well my '72 Road Runner has the original 400 that I stroked to 451 5-6 years back and haven't ran it much over the last few years maybe couple hundred miles a year if that, mostly because there is a bit of valve train noise above 2000 rpm (sewing machine like). I believe it is coming from the rockers. Last year I noticed the pushrods were a smidge short so I added longer ones to correct that and the noise is still there so pretty sure that my Crane gold rockers are not getting the oil they need at higher rpm or if they are worn or just the wrong application so have been thinking of getting a set of Harland Sharps? Have had great luck with them on my race motors and am guessing they would hold up well and run quieter? Cam lift is .494 Int - .513 Exh (Lunati Voo Doo) so nothing big. Just want a dependable set up as I want to get this car out more and to some shows,etc.
I see you have a Lunati ... Does it have ramps like the Comp MM lobes , if so nothing you do is going to stop the noise , it's the nature of the beast .
If you think you are not getting oil at higher RPMs switching to a rocker that is going bleed the oil out faster is not the direction to go ....
I agree that very well might be the problem, that or the springs that came on the Edelbrock heads that are suppose to be good for up to a .600 lift cam arn't! what they say. Looking for a used set of the Crane irons to see on ebay , etc. to see if it makes a difference or? Wondering if it is a Harmonic thing or ? as the sound is not that loud but there and just don't feel confident going to a show 100 miles away so pretty limited to around town stuff within my trailer distance.....
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Re: What BB rockers are you running on the street?
[Re: Pacnorthcuda]
#1736086
01/22/15 12:03 PM
01/22/15 12:03 PM
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Joined: Jan 2003
Posts: 2,946
Windsor ,Ca.
Keith Richards
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Windsor ,Ca.
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Quote:
I run the same cam in a 440. Stock rockers with iron heads till a few months ago when I went to aluminum source heads and old crane iron adjustable rockers. No noise.
Thanks for the input, this tells me there is hope for this GREAT cam!
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Re: What BB rockers are you running on the street?
[Re: JohnRR]
#1736088
01/22/15 12:17 PM
01/22/15 12:17 PM
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Joined: Feb 2003
Posts: 21,318
Manitoba, Canada
DaytonaTurbo
Too Many Posts
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Too Many Posts
Joined: Feb 2003
Posts: 21,318
Manitoba, Canada
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Quote:
Quote:
Just as the title says, Well my '72 Road Runner has the original 400 that I stroked to 451 5-6 years back and haven't ran it much over the last few years maybe couple hundred miles a year if that, mostly because there is a bit of valve train noise above 2000 rpm (sewing machine like). I believe it is coming from the rockers. Last year I noticed the pushrods were a smidge short so I added longer ones to correct that and the noise is still there so pretty sure that my Crane gold rockers are not getting the oil they need at higher rpm or if they are worn or just the wrong application so have been thinking of getting a set of Harland Sharps? Have had great luck with them on my race motors and am guessing they would hold up well and run quieter? Cam lift is .494 Int - .513 Exh (Lunati Voo Doo) so nothing big. Just want a dependable set up as I want to get this car out more and to some shows,etc.
I see you have a Lunati ... Does it have ramps like the Comp MM lobes , if so nothing you do is going to stop the noise , it's the nature of the beast .
If you think you are not getting oil at higher RPMs switching to a rocker that is going bleed the oil out faster is not the direction to go ....
I was thinking that too. In that case, short of changing cams, nothing might make the noise go away completely. Do you have any reason to think anything is being damaged by having the sewing machine sound?
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Re: What BB rockers are you running on the street?
[Re: Keith Richards]
#1736090
01/22/15 03:27 PM
01/22/15 03:27 PM
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Joined: Jan 2003
Posts: 75,080
U.S.S.A.
JohnRR
I Win
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I Win
Joined: Jan 2003
Posts: 75,080
U.S.S.A.
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Quote:
Quote:
Quote:
Just as the title says, Well my '72 Road Runner has the original 400 that I stroked to 451 5-6 years back and haven't ran it much over the last few years maybe couple hundred miles a year if that, mostly because there is a bit of valve train noise above 2000 rpm (sewing machine like). I believe it is coming from the rockers. Last year I noticed the pushrods were a smidge short so I added longer ones to correct that and the noise is still there so pretty sure that my Crane gold rockers are not getting the oil they need at higher rpm or if they are worn or just the wrong application so have been thinking of getting a set of Harland Sharps? Have had great luck with them on my race motors and am guessing they would hold up well and run quieter? Cam lift is .494 Int - .513 Exh (Lunati Voo Doo) so nothing big. Just want a dependable set up as I want to get this car out more and to some shows,etc.
I see you have a Lunati ... Does it have ramps like the Comp MM lobes , if so nothing you do is going to stop the noise , it's the nature of the beast .
If you think you are not getting oil at higher RPMs switching to a rocker that is going bleed the oil out faster is not the direction to go ....
I agree that very well might be the problem, that or the springs that came on the Edelbrock heads that are suppose to be good for up to a .600 lift cam arn't! what they say. Looking for a used set of the Crane irons to see on ebay , etc. to see if it makes a difference or? Wondering if it is a Harmonic thing or ? as the sound is not that loud but there and just don't feel confident going to a show 100 miles away so pretty limited to around town stuff within my trailer distance.....
I know a lot of people do it ... and it's not really right and I really don't care what the lazy and cheap/budgetminded have to say about it ... but when a spec is given like that ... good for a cam with up to .600 lift ... all that tells me is it won't COIL BIND and little else.
You need to find out what springs Lunati wants to use with that cam, figure out what installed height they need to be at to meet Lunati's spec and install them that way, only then can you rule that out.
And what is quiet to one person is different than what is quiet to others.
Be careful buying used rockers off ebay , the ductiles can get galled up and you won't know how bad they are till you have them in your hands.
I have to go thru the 2 used sets I have , I should have 16 good ones 
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Re: What BB rockers are you running on the street?
[Re: Keith Richards]
#1736092
01/23/15 01:20 AM
01/23/15 01:20 AM
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Joined: Oct 2012
Posts: 35
Northern NJ
67440dodge
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member
Joined: Oct 2012
Posts: 35
Northern NJ
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Ran the next up cam from that one (10230704 grind) with those rockers on Eddy heads on a 440. It had same "sewing machine" sound that you have.
As for springs, I ran em with ones recommended by Lunati set to their height.
Last edited by 67440dodge; 01/23/15 01:23 AM.
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Re: What BB rockers are you running on the street?
[Re: 67440dodge]
#1736093
01/23/15 03:20 AM
01/23/15 03:20 AM
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Joined: Jan 2003
Posts: 2,946
Windsor ,Ca.
Keith Richards
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Windsor ,Ca.
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Quote:
Ran the next up cam from that one (10230704 grind) with those rockers on Eddy heads on a 440. It had same "sewing machine" sound that you have.
As for springs, I ran em with ones recommended by Lunati set to their height.
Crane Gold? Or ductile iron?
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Re: What BB rockers are you running on the street?
[Re: Keith Richards]
#1736095
01/23/15 02:51 PM
01/23/15 02:51 PM
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Joined: Dec 2004
Posts: 10,555
Rittman Ohio
fourgearsavoy
I Live Here
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I Live Here
Joined: Dec 2004
Posts: 10,555
Rittman Ohio
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I like iron rockers for dependable street use like the Isky rockers on my 493. I had Gary over at RAS do his magic to them but im not sure if things are stable over there yet or not. Gus 
64 Plymouth Savoy
493 Indy EZ's by Nick at Compu-Flow
5-Speed Richmond faceplate Liberty box
Dana 60
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Re: What BB rockers are you running on the street?
[Re: Keith Richards]
#1736096
01/23/15 03:31 PM
01/23/15 03:31 PM
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Joined: Oct 2012
Posts: 35
Northern NJ
67440dodge
member
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member
Joined: Oct 2012
Posts: 35
Northern NJ
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Quote:
Quote:
Ran the next up cam from that one (10230704 grind) with those rockers on Eddy heads on a 440. It had same "sewing machine" sound that you have.
As for springs, I ran em with ones recommended by Lunati set to their height.
Crane Gold? Or ductile iron?
Sorry bout that.. Crane Gold's...
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Re: What BB rockers are you running on the street?
[Re: Keith Richards]
#1736097
01/23/15 03:54 PM
01/23/15 03:54 PM
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Joined: Aug 2003
Posts: 43,259
Bend,OR USA
Cab_Burge
I Win
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I Win
Joined: Aug 2003
Posts: 43,259
Bend,OR USA
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I've used adjustable pushrods a long time ago, stock ductile irons, CAT brand H.S. clones   , Crane extruded aluminums, RAS fully prepared ductile irons, Crane and Sig Ersons as well as unnamed Ductile iron, three different sets of Harland Sharps, 1.5 and 1.6 ratio  and finally T&D single shaft type on the street and track. I have had galling problems on the ductile irons using them on stock type shafts Stock shafts are for stock stamped steel rockers and nothing else   The CAT brand roller aluminum galled up thier brand shafts that they sold for thier cast stainless steel rockers, they didn't sell specific shafts for thier aluminum roller rockers back then so maybe that was my fault   I sent a batch of ductile irons to Gary this week at the current address for his old RAS company, I hope I don't loose them  I had them, RAS, do(blue print, bush, reset the ratio to 1.6, redo the tips and accurize) 3 1/2 sets of ductile irons years ago, they worked real nice, pretty accurate on the 1.6 ratio also I bought several sets of thier shafts and hold downs back then so I will use those shafts on these rockers when I decide to use them on a new build Lots of choices out there. I did have rocker arm, lifter noise, on a 426 Street Hemi motor that I used a set of Comp Cams early hydraulic roller lifters in a World block, they sounded like a old SB Chevy Corvette motor with the old solid lifter 30-30 Duntov grind cam in them back in the day It didn't matter how much preload I set them to IHTHS
Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
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