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Help with Pro Magnum rockers experience. #1764964 02/28/15 12:24 AM 02/28/15 12:24 AM
Joined: Nov 2004 Posts: 2,825 Sk. Canada RemCharger OP master
RemCharger OP master Joined: Nov 2004 Posts: 2,825 Sk. Canada	I'm putting a customers parts collection together. 383; xe284 cam, comp 7883 pushrods, and the comp pro magnum rockers. Pushrods are stock length(compared to a stocker side by side), but are a fair bit too long. just wondering if anyone has dealt with this before? Thanks for the input.

Re: Help with Pro Magnum rockers experience. [Re: RemCharger] #1764965 02/28/15 12:29 AM 02/28/15 12:29 AM
Joined: Nov 2009 Posts: 3,082 St. Paul , Mn. tubtar master
tubtar master Joined: Nov 2009 Posts: 3,082 St. Paul , Mn.	I have not with your specific parts pile , but changing the rockers means measure and order the correct length push rods for any single shaft mounted deal. I have no idea how much the difference is , but is was substantial with my 340 small block.......and I wanted better push rods anyway. ( I went from stock to H.S. ) Last edited by tubtar; 02/28/15 12:30 AM.

Re: Help with Pro Magnum rockers experience. [Re: tubtar] #1764966 02/28/15 01:10 AM 02/28/15 01:10 AM
Joined: Nov 2004 Posts: 2,825 Sk. Canada RemCharger OP master
RemCharger OP master Joined: Nov 2004 Posts: 2,825 Sk. Canada	Hey thanks. I will be measuring and getting custom length, but these are not like regular style rockers.. they oil through the adjusters. so i'm not sure what the acceptable "amount of threads showing" is. Figured I would see what others have done.

Re: Help with Pro Magnum rockers experience. [Re: RemCharger] #1764967 02/28/15 02:24 AM 02/28/15 02:24 AM
Joined: Aug 2003 Posts: 8,716 Baltimore/Denver 64Post master
64Post master Joined: Aug 2003 Posts: 8,716 Baltimore/Denver	I set them up with 2 threads showing. Custom pushrods are a given.

Re: Help with Pro Magnum rockers experience. [Re: 64Post] #1764968 02/28/15 02:46 AM 02/28/15 02:46 AM
Joined: Nov 2004 Posts: 2,825 Sk. Canada RemCharger OP master
RemCharger OP master Joined: Nov 2004 Posts: 2,825 Sk. Canada	Excellent thank you.

Re: Help with Pro Magnum rockers experience. [Re: RemCharger] #1764969 02/28/15 11:23 AM 02/28/15 11:23 AM
Joined: Feb 2005 Posts: 4,313 Prospect, PA BSB67 master
BSB67 master Joined: Feb 2005 Posts: 4,313 Prospect, PA	Not sure 2 threads showing is the right answer. It might be. You need to check how the hole in the rocker lines up with the groove in the adjuster. You can make some simple measurements to figure it all out. IIRC, the amount of adjustment that allows oiling is fairly limited.

Re: Help with Pro Magnum rockers experience. [Re: BSB67] #1764970 02/28/15 12:42 PM 02/28/15 12:42 PM
Joined: Mar 2005 Posts: 2,644 North Carolina sasquatch master
sasquatch master Joined: Mar 2005 Posts: 2,644 North Carolina	They use a ball ball style adjuster. Once you determine the length you can shop in the Bowtie section for pushrods. Way cheaper and huge selection..No need for customs on that rig. Todd www.mopartsracing.com

Re: Help with Pro Magnum rockers experience. [Re: sasquatch] #1764971 02/28/15 02:09 PM 02/28/15 02:09 PM
Joined: Feb 2005 Posts: 4,313 Prospect, PA BSB67 master
BSB67 master Joined: Feb 2005 Posts: 4,313 Prospect, PA	Quote: They use a ball ball style pushrod . Once you determine the length you can shop in the Bowtie section for pushrods. Way cheaper and huge selection..No need for customs on that rig. Todd Fixed

Re: Help with Pro Magnum rockers experience. [Re: RemCharger] #1764972 02/28/15 03:06 PM 02/28/15 03:06 PM
Joined: Jul 2013 Posts: 561 USA B B3RE mopar
B3RE mopar B Joined: Jul 2013 Posts: 561 USA	Quote: I'm putting a customers parts collection together. 383; xe284 cam, comp 7883 pushrods, and the comp pro magnum rockers. Pushrods are stock length(compared to a stocker side by side), but are a fair bit too long. just wondering if anyone has dealt with this before? Thanks for the input. Any roller rocker is going to require the shafts to be relocated to have correct geometry, so that might be something to consider before measuring and buying new pushrods. If your lucky, those pushrods that are too long might be just about right. IIRC, the Comps need 1 1/2 to 2 turns out from the seated position of the adjuster. Mike Beachel I didn't write the rules of math nor create the laws of physics, I am just bound by them.

Re: Help with Pro Magnum rockers experience. [Re: sasquatch] #1764973 02/28/15 04:44 PM 02/28/15 04:44 PM
Joined: Nov 2004 Posts: 2,825 Sk. Canada RemCharger OP master
RemCharger OP master Joined: Nov 2004 Posts: 2,825 Sk. Canada	Quote: They use a ball ball style adjuster. Once you determine the length you can shop in the Bowtie section for pushrods. Way cheaper and huge selection..No need for customs on that rig. Todd Yes i checked a BBC exh pushrod, but a bit too short I believe. Also on the shaft geometry; Is shimming being suggested Mike? Last edited by RemCharger; 02/28/15 04:45 PM.

Re: Help with Pro Magnum rockers experience. [Re: RemCharger] #1764974 02/28/15 05:59 PM 02/28/15 05:59 PM
Joined: Jul 2013 Posts: 561 USA B B3RE mopar
B3RE mopar B Joined: Jul 2013 Posts: 561 USA	Quote: Quote: They use a ball ball style adjuster. Once you determine the length you can shop in the Bowtie section for pushrods. Way cheaper and huge selection..No need for customs on that rig. Todd Yes i checked a BBC exh pushrod, but a bit too short I believe. Also on the shaft geometry; Is shimming being suggested Mike? No, shims are sure to crack the stands if the proper amount were stacked. They don't address the offset needed when moving the shafts either. They need to be spaced, or have the stands milled off and new stands/blocks made to replace the shafts. Mike Beachel I didn't write the rules of math nor create the laws of physics, I am just bound by them.

Re: Help with Pro Magnum rockers experience. [Re: B3RE] #1764975 02/28/15 09:29 PM 02/28/15 09:29 PM
Joined: Mar 2005 Posts: 2,644 North Carolina sasquatch master
sasquatch master Joined: Mar 2005 Posts: 2,644 North Carolina	Ok sportsfans. They use a Ball ball pushrod like a Chevy. You can flip through the COmp book or Manley or anyone else you like and find premade pushrods in .050 increments for great prices. You just may not be able to use the Mopar specific ones as most of those were made for stock type rockers. 1.5 to 2 threads on the bottom of the adjuster. They should work very well with that cam setup for a long time. I honestly do not know where some companies got there lengths for the replacement pushrods from as they rarely work Todd www.mopartsracing.com

Re: Help with Pro Magnum rockers experience. [Re: sasquatch] #1764976 02/28/15 11:57 PM 02/28/15 11:57 PM
Joined: Jan 2007 Posts: 7,664 IN A ahy master
ahy master A Joined: Jan 2007 Posts: 7,664 IN	I run a low deck with "pro magnums". A couple of comments to add. Yes, custom pushrods are generally needed. Also 1-2 threads has worked well for me on the adjusters. I used solid rocker shaft hold downs. To get the rockers centered, I had to mill a little off the sides of the hold downs and then use shims to get things lined up. Otherwise, sweep over the valve was great with .55" lift cam.

Re: Help with Pro Magnum rockers experience. [Re: ahy] #1764977 03/01/15 12:42 AM 03/01/15 12:42 AM
Joined: Jul 2013 Posts: 561 USA B B3RE mopar
B3RE mopar B Joined: Jul 2013 Posts: 561 USA	Quote: I run a low deck with "pro magnums". A couple of comments to add. Yes, custom pushrods are generally needed. Also 1-2 threads has worked well for me on the adjusters. I used solid rocker shaft hold downs. To get the rockers centered, I had to mill a little off the sides of the hold downs and then use shims to get things lined up. Otherwise, sweep over the valve was great with .55" lift cam. By solid hold downs, do you mean removable shaft stands? Hoe much sweep is great with a .55" lift cam? Mike Beachel I didn't write the rules of math nor create the laws of physics, I am just bound by them.

Re: Help with Pro Magnum rockers experience. [Re: B3RE] #1764978 03/01/15 06:26 AM 03/01/15 06:26 AM
Joined: Aug 2003 Posts: 8,716 Baltimore/Denver 64Post master
64Post master Joined: Aug 2003 Posts: 8,716 Baltimore/Denver	I think he means the solid hold downs that clamp the top of the shafts to the pedestals instead of the cheap ass stamped metal Mopar pieces. I used those as well on my low deck and shimmed the rocker pairs to avoid rubbing the PR at the tunnels. I also upsized to a .375"/.080" wall PR. Bushed lifter bores and edm lifters as well. Last edited by 64Post; 03/01/15 06:31 AM.

Re: Help with Pro Magnum rockers experience. [Re: 64Post] #1764979 03/01/15 12:40 PM 03/01/15 12:40 PM
Joined: Jan 2007 Posts: 7,664 IN A ahy master
ahy master A Joined: Jan 2007 Posts: 7,664 IN	Quote: I think he means the solid hold downs that clamp the top of the shafts to the pedestals instead of the cheap ass stamped metal Mopar pieces. I used those as well on my low deck and shimmed the rocker pairs to avoid rubbing the PR at the tunnels. I also upsized to a .375"/.080" wall PR. Bushed lifter bores and edm lifters as well. Yes and yes. Solid shaft hold downs. Sides milled slightly to generate clearance along the shaft and shim washers used to line up rockers over the valves. Bought the shim washers in packs of 16 or something like that from Mancini. I upgraded to 3/8" pushrods at the same time. Sweep over the valve was centered and tight though no photos or measurements.

Re: Help with Pro Magnum rockers experience. [Re: ahy] #1764980 03/01/15 02:23 PM 03/01/15 02:23 PM
Joined: Jan 2003 Posts: 9,875 Weddington, N.C. Streetwize master
Streetwize master Joined: Jan 2003 Posts: 9,875 Weddington, N.C.	My first time using the Comp Pro Magnums and I really like and prefer the cup being part of the rocker stud and being able to use ball/ball pushrods. I'm a little vexed why you say you would look for 1-2 turns when you can easily get full lash adjustment with only 5/8 to 1 turn. The rocker still oils through the hole and there also less likelihood of losing a pushrod from the rocker stud backing off since it will still be 'captive' by the cup stud. I know you want/need ~1 1/2-2 turns whenever you have a cup type pushrod, But you need that room to make sure the lip of the cup can't contact the rocker body at full lift. With a cup/stud this is not a concern since the stud now has a machined flat behind the cup and the rocker. The pro magnums are a nice upgrade, I think I may switch all my other rocker arm ball studs to stud cups and go to ball ball pushrods. Seems a lot simpler. Last edited by Streetwize; 03/01/15 04:34 PM. WIZE World's Quickest Diahatsu Rocky (??) 414" Stroker Small block Mopar Powered. 10.84 @ 123...and gettin' quicker! https://www.youtube.com/watch?v=-mWzLma3YGI In Car: https://www.youtube.com/watch?v=PjXcf95e6v0

Re: Help with Pro Magnum rockers experience. [Re: Streetwize] #1764981 03/02/15 03:33 PM 03/02/15 03:33 PM
Joined: Nov 2008 Posts: 671 Wisconsin USA B Bill MeLater mopar
Bill MeLater mopar B Joined: Nov 2008 Posts: 671 Wisconsin USA	How do they oil the cup to ball then? Is pushrod oiling needed?

Re: Help with Pro Magnum rockers experience. [Re: Bill MeLater] #1764982 03/02/15 04:03 PM 03/02/15 04:03 PM
Joined: Jun 2003 Posts: 52,972 Romeo MI MR_P_BODY Master
MR_P_BODY Master Joined: Jun 2003 Posts: 52,972 Romeo MI	Quote: How do they oil the cup to ball then? Is pushrod oiling needed? The single shaft version has a hole in the cup.. oil from the shaft goes through the rocker to oil the roller tip and the cup 8446429-B_Rockers_sml3.jpg (63 downloads)

Re: Help with Pro Magnum rockers experience. [Re: MR_P_BODY] #1764983 03/02/15 04:27 PM 03/02/15 04:27 PM
Joined: Jan 2003 Posts: 16,376 D dogdays I Live Here
dogdays I Live Here D Joined: Jan 2003 Posts: 16,376	Someone else said this but I'll repeat, www.oempushrods.com Decent low-cost pushrods available in 0.050" length increments. I'd suggest getting pushrods that oil through the ball even if you don't use that feature right now, you may use it later. R.

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