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Originally Posted by BenBaron
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Hi guys,
Im in need a little help on this one, as I havent a clue where to start.
Im building a 427w stroker(from a 351w)
Im gunna be putting on Ed Vic jrn heads (poss afr if I decide I can afford but worried about the CR),
So I need a retro-fit Hydraulic roller cam (ie reduced base circle) but I dont have a clue where to go from here. Comp cams do a range but I dont know what rev range to aim for or anything,
so fire away with comments please
Cheers
Ben
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Ben:
you want to get your heads flowed before settling on a cam. Get your flow numbers and then call one of the cam companies to see what the best cam is for you. If you are set on those edelbrocks, I would suggest ported Vic Jrs. as the flow numbers out of the box aren't that great and are prolly overstated on Edelbrock's web site anyways. As cast, these heads flow to .600 of lift on intake before the flow levels off so you would want a cam that can take advantage of that amount of flow. I think a better head choice would be Trick Flow R. These are set up for a roller cam and as cast, actually outflow the Vic. Jrs. If you get the Vics, you will have to retrofit it with better springs to be able to use the roller cam.
Your cam choice will depend on where you want your power band to be. Some cars make peak HP at 7000 but are dogs until 3000 rpm. Other cars make power between 1500-5500 rpm and then die off. Race car guys like the high rpm power bands while street guys choose for the low end kick. What kind of guy are you?