[Chevelle-list] Dyno Results

Devin devin at valleyautomotivesupply.com
Thu Mar 8 21:55:10 MST 2007


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 4th 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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