86bluecobra said:yes they are both hydraulic cams one flat tappet hydraulic the other hydraulic roller. If i could really gain that much HP and Torque i think i should do it.
bluevenom867 said:Ohh,I got this one cam article saved.Maybe Ill try and post pics or send it to you.
But basicly,if its a fairly mild cam,the flat will beat the roller.
vristang said:I never got to read that article (you sent it to me a few months ago). When I printed it out it was not legible. Can you point us to the mag you found it in? I still really want to read this.
I would think that a well designed roller cam could beat the crap out of a well designed flat cam. Just look at the size of the lobes. Area under the curve if you will. More mass to the lobe means more air can flow with less restriction.
It will depend on the cam though. I am sure that if you look hard enough on the dyno software, you can find a flat cam that will out perform the roller.
jason
bluevenom867 said:Its the article "THE TRUTH ABOUT STREET CAMS" by David Vizard pages 72-85 of PHR.
If you look closely, you can see it says September 2005 Popular Hot Rodding.
bluevenom867 said:
86bluecobra said:ok so i looked up the info on my heads and it turns out i could run up to .600 lift. on a flat tappet cam running near that lift i lose a bunch of bottom end torque with my curret combo. if i put a higher lift HR cam it seems that according to desk top dyno I retain the lower end torque gain more through tthe mid range and also see big gains in the peak HP numbers.
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