http://www.youtube.com/watch?v=qiXkNUFMIMg


This was done on a Dyno Dynamics machine
http://www.dyno.com.au/dyno/controller

I hear they put out numbers close to a Mustang Dyno.





I thought it would peak a bit higher rpm and TQ peak would be lower....

As you can see its running very lean.

Maybe too lean?

But at idle it seems to run rich--the smell and the black inside of my tail pipes.

I only get 20mpg on the highway too.


Comments are welcome

 

"I hear they put out numbers close to a Mustang Dyno."

Most are lower unless they have had the calibration changed.

 

Overall not bad at all and it sounds pretty healthy. It just needs some tweaking.

WOT is too lean. Personally I would like to see it down in the 12.5:1 afr range if it were my engine on our modern gasoline. Never know when you are going to find a tank of E10.

The torque numbers are likely being skewed by your converter. Alse your build looks to be fairly overcammed for the top-end of your engine to support. What I am saying is you could have made the same power with a smaller cam.

Here is a rather extreme case of torque skew from a loose converter coupled with Wide Open Throttle Force Lockup @ 80-85 mph. Stock S10 4.3 V6 converter behind a L31 Vortec 350 in a fullsize G1500 conversion van. Peak torque should have happened at 2,800 rpm and peak hp at 4,600. The only modifications were a S10 converter, DIY PCM Reflash/87 octane TUNE, and a Transgo HD2 shift kit.

 

do mean the rpm peak or the number itself?

I hear you on the cam. It was just built that way---I would like a better intake. Peaking at 4400rpm sucks.

Yeah a think I might get a better chip for it---and an intake

 

I mean the rpm peak would have occured at a lower rpm with a tighter or locked converter.

The cam is not a terrible mis-match, but is limited by the intake. Is this a stock chip running on the MAF setup?

 

not a stock chip--still MAF. Previous owner did all the mods.