Heffner Intercooler!

[FastMatt]

did you say you car was Venom 650 that made 466 rwhp????? thats it?? how much did that Venom 650 run you that gave you a good 50hp over stock?


congrats on your new #'s that thing should run into the 9's no prob...

 

[treynor]

> congrats on your new #'s that thing should run into the 9's no prob...

If only it were that easy!

I'd definitely be interested to see what Gary runs at the track now, however; I'm guessing mid-10s (radials) or low 10s (ET streets) in the low 140s...

 

[FastMatt]

if those power #'s cant put that car into the 9's there is something wrong (maybe Supra syndrome). And that is with power falling off from lack of fuel, come on if he can get a lo 1.5X 60 ft time he is there…

your car should be much faster then the 10.1 you have run, you just need to get that power to the ground...

 

[treynor]

Matt -- I agree that these 750+ RWHP S/C Vipers *should* be able to get into the 9's, but it rarely seems to work out that way. In Gary's case he can't even fit 16" wheels, so the 1.4x or low 1.5x short times he needs to hit 9's will be hard to achieve. I believe he's also running stock gears (as am I) while almost all the 9-sec cars run a 3.31 rear. Don't discount the traction problem either; I had to send my rear end to UNITRAX for the "kitchen sink" treatment before the car would track straight with the slicks spinning, and I'm still thinking about swapping for a Quaiffe rear to improve the situation. Finally, remember that the S/C cars are close to 100 lbs heavier than stock, once you count the supercharger, bracketry, intercooler, and so on.

That said, I have no doubt my car will run high 9's before long. The thing is, it *should* be able to run low 9's

 

[FastMatt]

thats true... I would love to see more of these cars run 9's. Only time will tell.


PS how do you like the Carbon/Carbon clutch? Best thing to happen to clutches if you ask me. I prototype tested the 1 for the stealth (twin disk) I have about 200 1/4 mile passes on it, and about 12,000 miles on it this yr, and it's still going

 

[GaryA]

Let me clear up a few questions I've gotten about the dyno pulls. First, ultimately the most important thing to me is how the car performs in the real world (on the street and at the track). The dyno for me is a useful tool for tuning and honestly I don't care to play any tricks to get the best numbers out there (it just happens to be the case that I did)

I'll leave the tricks to others.

Secondly, since the dyno is used as a tool, I want to keep all conditions as close to real world as possible. The conditions for these pulls were:

1) Ambient temp was about 68 deg. F in the shop.
2) No icing of any kind was used.
3) Most of the pulls were made within 10 minutes of each other.
4) Engine temp as indicated on the temperature gauge was about 195 deg. F.
5) The corrected numbers were 813.5 rwhp and 747.2 ft/lbs rwtq.
6) All pulls were done with the air filters installed. I noticed at Bowling Green that a lot of guys ran without air filters. My car was run with air filters installed at Bowling Green.

I can't believe the great response I've gotten from the success of Jason's supercharger. You should have seen people pouring into his shop as the word quickly got out about the baddest Viper around!

More to come...

 

[GaryA]

I'm running stock gears. I used to have 3.55 gears but it's just not the right combination for an S/C application. As far as the tires are concerned, I'm going to do what it takes to get a good tire for the track. That means either removing my StopTechs on the rear or having a wheel made that will work with the StopTechs (which sounds expensive to me).

Ultimately, as I mentioned before I'm not interested in making this into a race car and don't plan on taking it to the track too much.

 

[Bad02ViperGTS]

Congrats Gary and Jason on a job well done!!!!!!!!!!!!!!!!1

 

[jamie furman]

Ben I can clear up one thing, mid to low 10's is out! That car ran those numbers on old hard radial tires with 630 rearwheel, With ET streets alone my 570rwhp viper ran 10.50 with 250 more rw on tap Garys car is only going to pick up a couple of tenths? That sounds more like wishful thinking than a prediction because with over 800 hp on the rear wheels anything less than 9's is unacceptable! Thats why you spend that BIG MONEY to make all that power to run the number, nothing else.If a car makes that much power and doesn't run the number the owner ought to be looking for a auto trader, or some lighter fluid and a match!

 

[96 GTS]

Congratulations Gary! I'm all set to take my car to Jason's shop on November 23rd. He's going to give my GTS the "full treatment", and I'm so excited that I have trouble sleeping at night. Jason really seems to have his act together and puts out an incredible product.

 

[treynor]

Jamie, if you can put Gary's car into the 9's with stock gearing, no NOS and radial tires, I'll be the first to tip my hat to you. I've yet to see it done -- even Hennessey's TT car needed NOS to get into the 9's, and it was making a **** sight more HP than Gary's car. In fact, to the best of my knowledge no viper has ever run in the 9's without NOS so it appears if you can get his car there you'll have a new world record.

PS: if you succeed, I want you to drive my car next

 

[jamie furman]

Ben someones got to be the first, I have been in the nines many times before without nitrous, just not in a viper. I had a 93 cobra R Jason supercharged that ran 9.6 at 144 through the 2.5" exhaust on 10" et streets and that car only had 700 rwhp and was street legal and was reguarly street driven.I will agree on one thing though no one has done it in a viper yet so I don't want to talk about it anymore unless I do it, too many talkers and not enough doers on this board already, but don't be suprised when you read about it happening! As far as anyone making a lot more horse and not going that fast well I think thats easy to explain, the driver was not able to use all the hp he had or he didn't have as much hp that particular day as he did on the dyno. I actually agree with many of the points you make and you may end up correct but I don't think so. I use a calculator on the computer that estimates et based on horsepower, my cars always run almost exactly to the tenth and mph what the chart says, and lets say I never dynoed it but raced it and I pump in my weight and et and mph the rwhp is always within 10 hp when I finally make it to the dyno to see if the computer is correct. So based on that measurement tool, although not a science it has worked very well for me, you only need about 780 rwhp to run 9.8's in a viper. You will definately need a good clean pass that meaning good 60' and hit all you gears but hp won't be what holds this car out of the nines it could only be me. Like I said I went 10.5 at only 134 and only 569 on the rear wheels.