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prelim dyno numbers for twins

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Old Sep 28, 2006 | 07:59 PM
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Default prelim dyno numbers for twins
We just finished a road race car for a customer and put it on the dyno today.
10psi, 14* of timing and having to lift at 5800 because of too little pump still got us 589/521
Keep in mind guys, we are not trying for a ton of hp. Even at this level, traction will be an issue coming out of corners.
Engine is a all forged 347, mildly ported heads, 2 GT-35r's.
With a little more timing and more pump I think we are all over 630rwhp.
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Old Sep 28, 2006 | 09:40 PM
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Pretty nice....is this a rear mount setup?
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Old Sep 28, 2006 | 09:56 PM
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No, its front mount.
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Old Sep 28, 2006 | 09:58 PM
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Very nice....get some more fuel, add some timing get that torque up. Should be a fun one to drive.
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Old Sep 28, 2006 | 10:03 PM
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The fuel system was in place when we got the car. It has a single Bosche 044 pump now. We are adding a 2nd 044.
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Old Sep 29, 2006 | 01:25 AM
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got any more pics billy the guys at rpm said it looked awesome. i believe this is the same car.
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Old Sep 29, 2006 | 06:52 AM
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yeah you got any more picks??? is this a KIT or a custom build?? great numbers!

and who said thoes little GT35rs couldn't do the numbers! hehehe

Chris.
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Old Sep 29, 2006 | 07:23 AM
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Very nice setup. Damn I envy LS1s for their ease of turbo setups
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Old Sep 29, 2006 | 08:10 AM
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It is the same car I had at rpm. It is not a kit; all custom stuff.
For the numbers we are going for, the GT35r's seems like a good way to go.
Not alot of bling on the car. Basically just what will work for the customer.
I'll get some pics of the top when I get to work.

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Old Sep 29, 2006 | 08:13 AM
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looks very nice!
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Old Sep 29, 2006 | 08:23 AM
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Looks great Billy. Did you spray anything on the wrap?
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Old Sep 29, 2006 | 08:25 AM
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no, just wet the wrap and put it on tight.
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Old Sep 29, 2006 | 08:34 AM
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Nice work!
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Old Sep 29, 2006 | 10:16 AM
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Old Sep 30, 2006 | 09:51 AM
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There is a video of it on Streetfire.net
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Old Sep 30, 2006 | 09:03 PM
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I run the same turbos. Just to give you more hope, I am at 18.5 psi right now with mine on 93 octane.
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Old Sep 30, 2006 | 09:25 PM
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Not trying for big numbers since its a road race car. There is a limit to what can be used. 630 or so at 10psi and around 700 at 12psi. I have no doubt it will do it easily.
I also think that the numbers are right on for the way this 347 is built; small c.i., VERY mildly ported LS1 heads.
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Old Sep 30, 2006 | 10:40 PM
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Oh my god !!!
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Old Sep 30, 2006 | 11:30 PM
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can you tell me how the drain is setup. looks nice
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Old Oct 1, 2006 | 11:51 AM
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Turbos drain to a low point where a scavenging pump returns the oil into a drain in each side of the front cover.
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