proform rockers ?

Small Block Mopar Engine

  1. IfItsGotWheels

    IfItsGotWheels X S Tech

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    Back in the 80's I ran 273 rockers on my 13:1 340 with a 585 lift cam & Crane triple valve springs. Spun the motor to 7800rpm regularly. Bent lots of pushrods, but never broke a rocker. Save your money & just get good locking adjusters.
     
  2. dano

    dano Evil Handy Man

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    What shop?

    You can PM me the name if you'd like. Just curious as I need some work done soon.
     
  3. OUTLAW

    OUTLAW Master of All Mopars

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    I've had proforms on my cuda for 4 years now without a problem. I'm running .550 lift and stiff Lunati springs and I rap it out to 6-7000 rpm all the time. Cheap doesn't always mean bad
    just my 2 cents worth

    also I have had other proform stuff that sux like 2 rev limiters that were junk brand new
     
    • Thanks! Thanks! x 1
    • RustyRatRod

      RustyRatRod Lemmie see your b00bs. FABO Gold Member

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      And I agree with this ^^^^^^

      The problem is, there is so MUCH of an influx with overseas stuff now. You don't know if what you are getting is good or not. So naturally, since there is such a big pile of it, you will see more failures. It's the luck of the draw really.
       
    • DusTed74

      DusTed74 Well-Known Member

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    • RustyRatRod

      RustyRatRod Lemmie see your b00bs. FABO Gold Member

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      And the same company is probably makin all those too. Just keep that in mind.
       
    • Norway-dart

      Norway-dart Well-Known Member

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      Haha, thats true.. Im almost sorry i posted.
      he may get lucky and it could be fine for years!! Some have...i think

      We have a saying over here... its expensive to be poor.
       
    • stroked340

      stroked340 FABO Gold Member FABO Gold Member

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      Comp cam pro magnum been running them for 6 years on 2 different engines..no issues at all!!!
       
    • MOPARMITCH

      MOPARMITCH Mekong Gold Member FABO Gold Member

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      Crane
       
    • j par

      j par Well-hung Member

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      okay I'll take this shot up. I was fully expecting everyone to say they were junk because they're not expensive. I swear this as the honest truth when I was in getting my motor today at the machine shop a guy came in with a set of Hughes rockers in his hand pissed to no end because the underside of them were smacking his valve spring retainers. A lot of these things are how they're set up and how they are used.I have the motor at home now and just got the first coat of primer on it and like the shop said one of the adjusters is finger tight on my 273 rockers. I will get the pro forms in the mail tomorrow put a set on one head and see how their fitting as far as geometry and clearances. If they look like they'll work fine I'll use them if not I'll send them back and just get some adjusters for the 273's. so you got it half right I was looking for someone with real life experience with these rockers I'm not just cyber spenders, but on the other hand I certainly don't need anybody to pat me on the back. 410 stroker imprimer baby!View attachment 20150224_203538.jpg
       
    • stroked340

      stroked340 FABO Gold Member FABO Gold Member

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      Best of luck i wouldn't use them on my motors thats for sure...
       
    • j par

      j par Well-hung Member

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      no no! I very much appreciate your post that makes it 2 to 2 as far as two people having bad experiences and two people having good experiences. that's what I was actually looking for not a bunch of opinions on cheap Japanese junk which we all know they are but actual real life experience with the rockers themselves. Again thank you for your experienced comments !
       
    • 318willrun

      318willrun Utube channel 318willrun

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      Chinese, not Japanese. Japanese actually build some pretty good stuff.....:evil3:
       
    • Hipo65

      Hipo65 Yeah I'm "That Guy"

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      I had a set of them on my old 340 @ they are what you get for 200 some bucks! JUNK! check the lift @ the valve with a dial indicator. They will be all over the place for ratio! Ask how i know! One rocker was in the 1.3 raito range! (No wonder the idle got choppyer & throddle responce took a nose dive!) I had nowhere neer the .545 lift @ the valve i was checking it with a solid lifter. Went with comp pro magnums & that made a huge diffrence lift was withen .005 of the .545 overall lift @ the valve! Id stay with the 273 rockers before i ever did the pro forms! I've got sets of oe 273 rockers if you need to replace them.
       
    • Norway-dart

      Norway-dart Well-Known Member

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      Just came to mind my biggest consern when testfitting my proforms... The roller tip did not center at the valve stem, it was like 70% to one side, and even got worse when cam lifted... Not good for valvestem and wear. Check it out when you get yours;-)
       
    • j par

      j par Well-hung Member

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      please see the thread called "I set a new speed record today" it's a continuation basically of this thread.
       
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