Help, Losing Power Too Early

wido78

Founding Member
Jan 24, 2002
217
0
0
Olathe, Ks
Well, I finally got my car to the track and needless to say, I was...disappointed! The fastest speed I was able to trap was 105 MPH, I had NO power on the top end. :mad:

So today I went to the dyno to do some tuning and the following where my numbers:

1st Run: Max Power 377.5 @ 5200 Max Torque 429 @ 4300
3rd Run: Max Power 458.7 @ 4800 Max Torque 489 @ 4800
4th Run: Max Power 402.2 @ 5200 Max Torque 451 @ 4600

The tuner didn't include run 2 on the graph, but it was about the same as the first. There was a decent cool down period between each of the runs, with the exception of the 4th, which he only waited a minute and a half before making the run.

The following are my mods and I would think that I should be making more horsepower as well as longer in the RPM range.

331 Stroker
TFS TW Heads
1.6 RR
Vortech V1 S-trim around 6PSI
Ported Cobra Upper/Lower
FMS 42 lb injectors
X-303 Cam
Crane Ignition
Autolite spark Plugs @ .035

The tuner is thinking the spark is being blown out on the top end and wants me to go back to stock ignition and make some more pulls.

I was wondering what everyone's thoughts are as well as where other's are making power, I would think it should go into the 5500-5800 range for this type of setup.

Thanks in advance.