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Old 01-14-2011, 07:19 PM
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On Dyno Tommorow..Anyone Want to Guess number??

I'm going to dyno my New engine tommorow. So Everyone post a number for your guess for RWHP, and see how close you are. Use your desk top dyno. If using one let us know so we can see how close you are with it.

Here is my Specs:
Engine is SBC 383 with the following.
1. Heads dart pro 1 aluminum 215 64cc / dual springs / 7/16 studs / Intake Exhaust 2.05 1.60VJ Comp Retainers / 220 seat pressure / Harland Sharp Roller Rocker 1.5 / 6" rods

2. Custom Ground Solid Roller Comp Cam:
Gross Valve Lift Intake: .600 Exhaust: .600

Duration @ .50 INT: .288 EXH: .292

41deg overlap at .050

3. Intake Open plenum Professional Product "Hurrican"
4. 30 over Mahlie forged flat top pistons / 2 valve reliefs

5. Carburetor: AED HO (Holley) 750HO / 1/2 ss gas line mech pump
6. Dynatech ceramic coated 1 3/4 stepped to 1 7/8 / 3" SS dual exhaust
7. Distributor: MSD Pro-Billet w/blaster coil/MSD 6AL
8. Compression 10-8
9. Rear end Moser 12 bolt with posi 373 / 17 crager / 275/50 rear /caltracs /
10. tranny Turbo 350 hughes w/3500 stall
11. electric fan

Head Flow numbers
200 300 400 500 600 700 / lift
INT 141 199 244 277 308 317
Ex 158 159 182 202 214 214

Hopefully nothing breaks..

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Old 01-14-2011, 07:36 PM
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No desktop but I'll play.

560HP @ 6200 ???
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Old 01-14-2011, 07:41 PM
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Never been on dyno, not that experienced with HP numbers, so I say around 390, but I hope i'm wrong and its higher (would like to be in the 400 range)
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Old 01-15-2011, 12:09 AM
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460-ish rwhp, peak at around 68-6900 rpm. Carb is a little small, and compression low for a cam that big(if 288/292@.050" is correct??, lift seems low for that much duration). If 288/292 is advertised duration, then only about 415-ish rwhp.
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Old 01-15-2011, 02:38 AM
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No desk top dyno, but use the G-Tech and been on an engine dyno once and chassis dyno twice just in the last year. Also running a 383 but my numbers will NOT be like anyone else's unless we have rock crawlers here. My roller numbers are 273 hp @ 4050 and 433 lb/ft @2800. Yours I'm guessing to be 320 to 345 hp @ 5900 and 355 to 395 lb/ft @ 4100.

That's my bet and I'm sticking to it.

Bob

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Old 01-15-2011, 03:01 AM
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About 15 T buckets ran the rollers this fine November day in SE Arizona, all were at least OHV sbc, lots of tunnel rams, a few blowers, and with the exception of 3 rides, laid down from 109 to just under 200 hp. The guy in this picture beat me by almost 100 hp, but I still had the highest torque numbers. One blown 454 small block mouse managed around 380 hp with a self imposed throttle stop that only allowed 1/2 throttle from the pedal. He was an older gentleman and his engine was a $15K pro built.

Bob

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Old 01-15-2011, 03:04 AM
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I forgot, one ride didn't break the 10 hp barrier.

Bob

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Old 01-15-2011, 06:03 AM
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380-400.just guessin.
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Old 01-15-2011, 09:56 AM
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I'm guessing around 400-425hp.
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Old 01-15-2011, 11:52 AM
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It should be faster than walking.

You can make a dyno say pretty much what ever you want. Even the same settings on two dyno's will not be the exact same. What runs goo on the dyno doesn't always directly realte to performance on the track or street eiether so try not to get into that trap.

Quote:
Duration @ .50 INT: .288 EXH: .292
This isn't correct I'm sure of it.
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Old 01-15-2011, 02:15 PM
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Well, with him being in North Carolina, I was expecting results by now.

Bob
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Old 01-15-2011, 04:21 PM
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Quote:
Originally Posted by deckofficer
I forgot, one ride didn't break the 10 hp barrier.

Bob

Thats because its missing the clutch and belt/chain
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Old 01-15-2011, 04:26 PM
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Deckofficer, those are great pictures.

I really hope obengston comes back with a copy of the dyno sheet. It should prove to be helpful to some people.


454 RATTLER
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Old 01-15-2011, 05:13 PM
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454 rattler,

Thanks, but can only take credit for the photo of the Mopar powered T on the rollers, with the T owner's arm in the air like he is riding a bronco.

Bob
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Old 01-15-2011, 06:28 PM
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Just got back the dyne guy wants me to put some more miles on the engine first. He set the carb and did a small pull only to about 5000 and said off what he saw and feels he says should easily make 400 so I will go back next week.
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