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Old 05-04-2006, 08:07 AM
How fast is fast enough?
 
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Dart VS GM

ok, so for a high torque 383 which would be better- modified Vortec heads, or Dart Iron Eagle 200cc? I'm thinking of going with the dart because of my high lift (almost .550) and extra displacement. I'm running a Voodoo 268 cam with 1.6:1 rockers.
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Old 05-04-2006, 10:33 AM
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What the intended RPM usage? CR? How heavy in the vehicle?
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Old 05-04-2006, 10:55 AM
How fast is fast enough?
 
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well, you're really looking to far into it because these heads will be on a engine that is continuously modified, but as of now its a 383 with 9.6:1 compression in a 87 TA
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Old 05-04-2006, 12:47 PM
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Definitely the vortecs. You can buy a pair of them assembled and modified for higher lift from Scoggin Dickey for something like $680.
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Old 05-04-2006, 01:44 PM
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For a continued build I woud start with dart 200 and build into them.

For grocery gettin I would say the Vortech.

For drag, oval track, or road course I woulda said the Dart 215

For marine I woulda said the 220

On gas I woulda said the dart 200

On alky I woulda said the 230


Get my point yet??????????

Generic questions get's you generic answers.

One is not better in all, or even some, situations.
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Old 05-04-2006, 04:25 PM
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The vortecs will require a vortec intake, vortec rocker arms, vortec valve covers, and really benefit from a little exhaust valve bowl smoothing. So the cost of the vortecs really add up if you need to buy the stuff listed above.

There have been some nice engine builds using 383/406's with vortec heads. A bunch of torque! And pretty good hp. If you have low numeric gears and need tire spinning torque then go with the vortecs (160cc ports). If your goal is high rpm power then go with the darts (200cc).
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Old 05-04-2006, 05:19 PM
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i like the darts also but there is a big difference in the old vortec's and the new ones that came out last yr.
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