Edelbrocks rpm Intake vs. The Performer - Hot Rod Forum : Hotrodders Bulletin Board
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Old 05-16-2004, 05:14 PM
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Edelbrocks rpm Intake vs. The Performer

I know the rpm intake is for higher rpm`s but does the rpm manifold also benefit less than 5500 rpms? I`m going with the ZZ4 camshaft and it tops off at 5250 rpms.

My set up will be 10.5:1 CR, Edelbrock heads and the ZZ4 roller cam 208/221 @.050. Lift .474/.510

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Old 05-16-2004, 06:37 PM
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The Regular Performer makes a little better power off idle to about 2000 RPMs, if your running a 2000-2500 RPM conertor a stick car that wont matter anyway. but if your engines power band is within 5500 RPMs, the regular Performer might be the better choice.
happened to have a recent comparison on a buddys Nova. hes got a mild 350, the SpeedPro cam he has says the power band is to 4800 RPMs, it actually pulls string to about 5200 RPMs. He recently swapped the Performer for a Performer RPM, it now seems to pull a little harder over 5000 RPMs now, but lost some power below 4000 RPMs. Weve played with timing & jetting, hes gonna put the Performer back on it.
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Old 05-17-2004, 02:33 AM
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I think awhile back Chevy Hi Performance magazine (great mag) did a test with a 350 and a mild cam .480? and the RPM intake was equal torque or better thruout the 1500 to 5500 rpm range.
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Old 05-17-2004, 03:37 AM
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With the compression ratio and the heads you are using; I wouldn't use any intake less than the Performer RPM.
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Old 05-17-2004, 05:00 AM
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I've had very good results with my performer... very durable and saved me a bunch of weight on the trade from iron
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