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Old 06-13-2003, 05:39 PM
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CJ428CJ CJ428CJ is offline
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Join Date: Dec 2000
Location: Livermore, CA
Cobra Make, Engine: ERA #629, BBM Side Oiler Block, 482ci, Richmond 5 speed
Posts: 853
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Denny,

I disagree with BB427 that Desktop Dyno is just a toy. It undoubtedly makes assumptions and there's no way it'll get you a 100% accurate number but it'll get you a lot closer to your actual horsepower than all the guesstimates on any forum. Engine and cam designers today don't say "I think this will work," build the motor and then put it on a dyno. They model it first using computer modeling. That's what desktop dyno does too. I'd be happy to run some numbers for you. I would need:

1. The compression ratio you want me to plug in.
2. Info on what heads you're running. If you're running the Edelbrocks that's easy. All the data I need is on line and I can pull it up. If you're running something else, I need valve diameters and bench flow data would be great but you probably won't have it if you're using stock heads.
3. You're using the Edelbrock performer manifold right?
4. Exhaust - stock manifold and mufflers, hi-po manifold and mufflers, or headers with mufflers. If headers, what diameter are the pipes?
5. Cam specs but I already found them for your cam grind.

Let me know and I'll run the numbers and tell you what I find.

Chris
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