good rockers for 6000 rpm, 540CI combo??

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01-10-2015, 08:08 AM

#11

Black Baja

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I'd be more worried about the springs than the rocker arms for 6000rpm. You need spring pressure to operate correctly at that rpm. If your rocker arms don't have a ton of hours and you can achieve the correct geometry with them. Spend the money on springs. Far more important than aluminum vs. steel. Bob is a master with numbers when it comes to motors. Go with what he suggested there is a reason for it...

01-10-2015, 08:13 AM

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vintage chromoly

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I'd be worried about the finite life cycle of the aluminum arms. Especially if I didn't buy them new and couldn't quantify the hours on them.
Im guessing Bob would recommend new heads if asked.

01-10-2015, 08:14 AM

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MILD THUNDER

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Tim, I'd go with .135 wall pushrods from Trend Performance.

Rockers, my first choice would be crower stainless. Aside from the whole steel thing being better, they offer a backset option, which on certain setups, may be warranted. But as mentioned, kinda pricey.

Scorpions look pretty nice as well. I would definitly get the ''Marine Endurance" rocker they offer if going that route. Nice piece.

01-10-2015, 08:14 AM

#14

Black Baja

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On a side note if you think steel is important I have a set of comps that are practically brand new. Pm me if your interested I'll let them go cheap.

01-10-2015, 08:20 AM

#15

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Quote:

Originally Posted by vintage chromoly

I'd be worried about the finite life cycle of the aluminum arms. Especially if I didn't buy them new and couldn't quantify the hours on them.
Im guessing Bob would recommend new heads if asked.

I talked to Bob the other day on pricing of AFR, great pricing, just gotta try to make the money.... hard when you pay cash as you go.... my Crane aluminums on my Baja were super old with tons of gours, no issues, but who knows... I cant do 600 a set of rockers.... just not gonna be able to with all the other stuff I am replacing.