Which Roller Rockers for Magnums?

Put a more aggressive roller cam in my 5.9 Magnum and found I needed longer pushrods. I saw an ad one day for a new set of Mopar Performance Roller Rockers with pushrods, and the price was right. I installed them and everything seemed correct. Just got a new Mopar Performance catalog, and the rockers I used, P5153852, are listed as "for use only with/required for cylinder head P5153847. This is the Magnum aluminum cylinder head. There is another set of roller rockers, P5007404, that are listed for production and R/T heads. Am I going to have a problem with these so that I need to remove them? I haven't fired the engine yet, was going to fix the valve cover interference next.

I don't understand why you would need longer rod for an agressive cam , I used a .560 lift cam with stock rods.. need to keep the stock one for stock heads for right geometry....

The Crane roller rocker are the best for this application..you can find some on ebay...I'M using them myself in my stroker
Dan

I tried to use the stock rocker set-up, and due to the smaller base circle of the cam, they were too short. There was a lot of "slop" and I never could get anywhere close to any lifter preload. I would hate to have to give up a good deal and go buy some more. Maybe I will have to.

small block chevys uses the same rockers if you want to save money but make sure they are at least 1.6 ratio. I have 1.7 (chromemoly?)Crowers on my SST but I milled the heads and had to go with different pushrods(DIAMOND). Been on the truck 10 years...

oh yeah...use guide bars

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I don't understand why you would need longer rod for an agressive cam , I used a .560 lift cam with stock rods.. need to keep the stock one for stock heads for right geometry....

The Crane roller rocker are the best for this application..you can find some on ebay...I'M using them myself in my stroker
Dan

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if it's a reground cam, with a smaller base circle, there's a good chance the stock pushrods will be too short. there's some comp pushrods that are meant for a 302 ford that are about .020-.036" longer than stock magnum ones (depending on spec I've seen for magnum pushrods), for about $30 at summitracing.

http://www.summitracing.com/parts/CCA-7828-16/

I used them on mine...worked good

as far as roller rockers, any small block chevy rockers will work, with the proper studs (5/16" bottom thread, with the proper 3/8" or 7/16" top threads). personally, I'd probably look at the scorpion performance pedestal mount ones for an AMC, since the magnum rocker is a carryover part from the 290-401 AMC motors, and scorpions are all US made down in florida.

http://www.summitracing.com/parts/SCC-SCP1097BL/