[Chevelle-list] Dyno Results

[Devin]

Larry-  Yes, this is RWHP.  The dyno operator said he expected about
550-560hp at the flywheel.  

I don't expect to see much gain in the hp dept from getting the fuel curve
better, but a big jump in torque.  The area where it is lean is below 4700
rpm or so, where HP is not yet near peak.  I've learned that torque is
really what I'm using to pull good E.T's anyway, build good torque and the
hp will take care of itself.

It will likely be a while before I am able to make the needed corrections to
make more pulls, but I'll report back to the list when I do.

Devin

-----Original Message-----
From: chevelle-list-bounces at chevelles.net
[mailto:chevelle-list-bounces at chevelles.net] On Behalf Of Larry Williams
Sent: Friday, March 09, 2007 6:07 PM
To: The Chevelle Mailing List
Subject: Re: [Chevelle-list] Dyno Results

This is RWHP?  If it is, then what is the HP at the flywheel?  When you 
get the fuel mixture dialed in the HP should jump.

Larry


Devin wrote:
>
> This was an interesting experience for me.  I had not previously 
> dyno’d anything, ever.  I was not able to make any adjustments on the 
> spot as I had wanted due to a clearance issue, but I did get one good 
> pull to use as a baseline.  The first 3 pulls were done back to back, 
> and afterward we were checking the computer and the ignition reference 
> wires had vibrated off of the coil, so the first 3 were useless.  My 
> right slick was rubbing on the tailpipe with my car tied down on the 
> dyno, so after my 4^th pull we actually had some numbers.  I wasn’t 
> able to go any further however.
>
>  
>
> Both horsepower and torque were very nice smooth curves, with a max hp 
> of 423.1 at 5600 and 455.9 ft/lb at 4300.  Fuel curve didn’t get close 
> to 14:1 until 4700 rpm.  It started out at 18.2:1 at 3000.  I’ll take 
> care of this before I go back for more pulls with a different cam on 
> the accelerator pump.  I may have to do some jetting changes as well, 
> but it’s pretty good in the upper range so I think the jetting is 
> fairly close.
>
>  
>
> Devin
>
>
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