Whipple 2.3 @ 21psi, race fuel dyno results

[Avenger]

Just wanted to share last week's experience. I actually put the car on the dyno to fine tune it last week and I left with 669 / 667 with 20deg of timing. I picked up an average of 30whp / 30wtq throughout the RPM range by backing timing from 23 to 20deg. I've always assumed 23 was "Maximum Brake Torque" so I set it there and never played with it. I was shocked to say the least. Here's a graph showing the improvement

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Went to the track last weekend to see if the car would perform better and actually beat my best trap ever 2 out of 3 passes with a 30mph headwind ! New best trap of 133.4mph. Also got a new best 60ft at 1.54 thanks to the newfound bottom end torque with the car slightly bogging off the line. Can't wait to get back this weekend and see if I can put this thing in the 10.3X @ 135, would be awesome !!

Motor is 100% stock down to the factory exhaust manifolds. Car is full weight except for spare tire and a set of racing wheels. Race weight in the neighborhood of 4000lbs :rollseyes

:beer:

 

[Posi]

Man that's awesome. I assume that's your race fuel tune? Good luck on getting that ET down some more. It is that time of year.

 

[SVT03Chris]

So with a 2.3 Whipp @ 21lbs and 20* of Timing it laid down 669 /667??

That is impressive! What octane?

I want to get mine on the dyno and see what it lays down in this colder weather...

Great results no doubt!!

 

[Avenger]

That is indeed the numbers it put down on the race tune using VP MS109 oxygenated fuel. The car was probably seeing a bit more boost as it was around 60*F outside. I didn't datalog it but pulley combo is 4# lower and 3.0" upper on Gen2 Whipple.

 

[96stanggt]

Congrats on the new numbers, crazy it made that much more power with less timing. BTW you're race weight is probably quite a bit lower than that, unless you're a 450lb+ guy.

 

[PWORLDSTANG]

Congrats on the numbers, very impressive!

 

[evolve]

damn nice!

 

[SVT03Chris]

That is indeed the numbers it put down on the race tune using VP MS109 oxygenated fuel. The car was probably seeing a bit more boost as it was around 60*F outside. I didn't datalog it but pulley combo is 4# lower and 3.0" upper on Gen2 Whipple.

That pulley combo is exactly what I run on my 2.2l for my Race tune, well when I got it dynod, haven't been on the street with that set up. I was seeing 20-21psi with it on the dyno, ~ 102* in the shop at the time of tuning.

Congrats again :beer:

 

[Avenger]

Congrats on the new numbers, crazy it made that much more power with less timing. BTW you're race weight is probably quite a bit lower than that, unless you're a 450lb+ guy.

Well, I'm a 350lb guy and I know these cars tip the scale at around 3650lb so that seems about right, no ?

 

[96stanggt]

Well, I'm a 350lb guy and I know these cars tip the scale at around 3650lb so that seems about right, no ?

Well you're a big boy, but the spare tire/jack drop a little over 40lbs and those Bogarts are good for over a 100lbs. Aftermarket exhaust will cut off another 25-40lbs depending on the combo, so figure between 3800-3850 raceweight most likely.

 

[Avenger]

well then you should add for the heavier blower / larger radiator and intercooler / twin disk clutch / subframe connectors / wideband / 2step / return style fuel system. Bet it adds up as fast as you substract it. I'll have to put it on a scale !