Got a customers car in here that was running like crap and discovered a broken Comp Cam Pro Magnum Roller Rocker. Not sure if I want to just replace the broken one and possibly have more break later on. This is a Dart Pro 1 headed 632 that was bought complete intake to pan as a Sportsman Series type race engine and the owner doesn't want to splurge for shaft rockers so i'm looking to just replace the set with the best I can find. Motor makes approx. 940hp. Thanks.
We ran a lot of crane golds and they have always worked great...But if he's worried about it put T&D's on it and forget about it!
With those heads, also make sure they have the LONGER thread rocker studs on the intake side, Dart heads are notorious for ripping threads out from the wrong rocker stud...
Got a customers car in here that was running like crap and discovered a broken Comp Cam Pro Magnum Roller Rocker. Not sure if I want to just replace the broken one and possibly have more break later on. This is a Dart Pro 1 headed 632 that was bought complete intake to pan as a Sportsman Series type race engine and the owner doesn't want to splurge for shaft rockers so i'm looking to just replace the set with the best I can find. Motor makes approx. 940hp. Thanks.
Dan, make SURE those rockers are in fact Comps, they get calls all the time about broken Magnum rockers, turns out they are Chinese knockoffs that look very similar to the Comp Magnums. The Comps say CC on them, if they don't say that then they are NOT Comps.
The Comp Magnums are some tough stuff, I personally have not seen one broken, but that does not mean it doesn't happen.
The comp magnums that it sounds like your using should be plenty. If your staying with steel I'd stick with them. It looks like a lot of the rockers others are referencing are alluminum.
While I like the Crane Gold alluminum rockers and the harland sharps, neither will be as strong as the "real" comp magnums.
The fulcrum and shaft in the magnums seem very stout. Its been a few years since I've farted with them since we went shaft style but I always had good luck with them.
The comp magnums that it sounds like your using should be plenty. If your staying with steel I'd stick with them. It looks like a lot of the rockers others are referencing are alluminum.
While I like the Crane Gold alluminum rockers and the harland sharps, neither will be as strong as the "real" comp magnums.
The fulcrum and shaft in the magnums seem very stout. Its been a few years since I've farted with them since we went shaft style but I always had good luck with them.
Ran Crane Gold for yrs, and the past few years well over 1800hp , with stud mounted crane golds, no failures. I just sold them for a good price, upgrading to jesel, but they never let me down.....pure comedy
As cheap as SBF, and SBC rocker arms are there would be only two choices, Jesel or T&D. Think your rockers are expensive price some Jesel or Barton (T&D) rockers for a Hemi..LMAO...
These are Real Comp Cam Pro Magnums. Have CC embossed right on the side along with the 1.7 ratio.. The thin metal area surrounding the lower part of the bearing trunnion is was broke away on one side. This guy has somewhere to be with the car this weekend so if I can get one replacement in enough time I may just do that, otherwise I will get him a new set and let him sell off these. This guy is retired on a fixed income and can't afford to drop $800-$1000 right now when he can get into a new set of rockers for less than $300.
These are Real Comp Cam Pro Magnums. Have CC embossed right on the side along with the 1.7 ratio.. The thin metal area surrounding the lower part of the bearing trunnion is was broke away on one side. This guy has somewhere to be with the car this weekend so if I can get one replacement in enough time I may just do that, otherwise I will get him a new set and let him sell off these. This guy is retired on a fixed income and can't afford to drop $800-$1000 right now when he can get into a new set of rockers for less than $300.
I had the same thing happen to my comp pro-magnums. Broke the outside of the bearing trunnion. Replaced it and have not had any more problems. I still do not know what caused it.
Im not a engine builder by no means. but i have used them all and cant say i have had any trouble with any paticular brand . Im also wondering if the rockers on that engine maybe imitations of Comp Cams. or something had to break it uless the rockers are extremely brittle ,but not likely either. But in my opinion Jesel are the best and then i like Crane Golds , then Harland Sharpe, then T&D. Is the valve straight? and is the head off? POst some PICS i would like to see where the rocker broke.
Just 5 months ago i had a pro mag rocker break at the base for no reason. When I called comp they said they had some problems with them and changed both some of the materials and the forger. They sent me a brand new set and so far so good. 565/970hp
Got a customers car in here that was running like crap and discovered a broken Comp Cam Pro Magnum Roller Rocker. Not sure if I want to just replace the broken one and possibly have more break later on. This is a Dart Pro 1 headed 632 that was bought complete intake to pan as a Sportsman Series type race engine and the owner doesn't want to splurge for shaft rockers so i'm looking to just replace the set with the best I can find. Motor makes approx. 940hp. Thanks.
I have always ran jesel but t&d is good stuff also (rockers is not a place to cheap out) pay now or pay more to fix shit!!!!!!!!!!
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