ViperExchange Heads/Cam car goes 10.5@139

[V10powerr]

love the sound and the fact that you guys always put your money where your mouth is, in testing, support customer service.

this is not towards VE but i am a little disappointed in the amount of power added by H/C. i think maybe arrow did this to make sure the car is reliable.
i heard from a close friend that he saw a base viper with headers and catback and maybe ECM do 10.48 on Saturday. same blue color as Andy's at the same track.
IF that is the case, this car should have done better.
this is not meant to hurt feelings, just to better understand all options.

[Nine Ball]

love the sound and the fact that you guys always put your money where your mouth is, in testing, support customer service.

this is not towards VE but i am a little disappointed in the amount of power added by H/C. i think maybe arrow did this to make sure the car is reliable.
i heard from a close friend that he saw a base viper with headers and catback and maybe ECM do 10.48 on Saturday. same blue color as Andy's at the same track.
IF that is the case, this car should have done better.
this is not meant to hurt feelings, just to better understand all options.

Upon reading that, I'd assume you have zero expertise in drag racing. Not nearly enough, to make valid comparisons based on data, anyways.

ET is all about traction, and the first sixty feet of the track.
MPH is all about horsepower. A good indicator of ET potential, if the first 60' can be done well.

The bolt-on car with a custom tune trapped 134 mph - on a colder weather day (low 50s outside)
The heads/cam VE car went 139 mph - on a warmer 67F day.

That is a substantial difference in horsepower. ET isn't an indicator of horsepower, it is mostly about traction.

[rlhay2]

i heard from a close friend that he saw a base viper with headers and catback and maybe ECM do 10.48 on Saturday. same blue color as Andy's at the same track.

HP tuned 2015 Viper.jpg

Here is the pic from Facebook.
headers, catback and custom tuned ECM using HPTuners.

[slowhatch]

Upon reading that, I'd assume you have zero expertise in drag racing. Not nearly enough, to make valid comparisons based on data, anyways.

ET is all about traction, and the first sixty feet of the track.
MPH is all about horsepower. A good indicator of ET potential, if the first 60' can be done well.

The bolt-on car with a custom tune trapped 134 mph - on a colder weather day (low 50s outside)
The heads/cam VE car went 139 mph - on a warmer 67F day.

That is a substantial difference in horsepower. ET isn't an indicator of horsepower, it is mostly about traction.

Exactly.

The car is right where it should be. If it was launched hard enough to pull a 1.6 short time you would knocking on bottom 10s @140mph. That is serious business for an NA track car.

Great runs Andy, car sounds absolutely stupid with the straight pipes.








Photography by Clayton Richards

[txA&M08]

Great runs Andy, car sounds absolutely stupid with the straight pipes.

I had only seen video clips up until yesterday. It's absolutely the best-sounding Viper I've ever heard.

[Speed Syndicate]

Good driving Andy and glad you made it out! That brown dude at the beginning of the video gave me a boner.

[FLATOUT]

HP tuned 2015 Viper.jpg

Here is the pic from Facebook.
headers, catback and custom tuned ECM using HPTuners.

Elie is a local guy and we know the car well. We actually put the underdrive pulley on for him on Friday while we were replacing his passenger side window so I was thrilled to see him go that quick. 1.61 60's are awesome in a 6 speed Viper. His car made 600 rwhp sae the night before.

[FLATOUT]

Good driving Andy and glad you made it out! That brown dude at the beginning of the video gave me a boner.

LMFAO the brown hotness for sure. Thanks for having us Amar, always a well run event attended by the best cars in town.

Andy

[FLATOUT]

Thanks Alex and thanks for the pics! Clayton is the man with the camera. Enjoyed seeing you and Jay there.

Andy

Exactly.

The car is right where it should be. If it was launched hard enough to pull a 1.6 short time you would knocking on bottom 10s @140mph. That is serious business for an NA track car.

Great runs Andy, car sounds absolutely stupid with the straight pipes.








Photography by Clayton Richards

- - - Updated - - -

I had only seen video clips up until yesterday. It's absolutely the best-sounding Viper I've ever heard.

Really appreciate that, it's loud but I do enjoy it more and more with the cam in the car.

[Jack B]

Just to back up Andy, at the G5 power level, going from a 60ft time of 1.85, down to 1.6, means a reduction of .25 sec X 2.5, or a 0.56 sec reduction in ET. That puts Andy at a 9.94.

Next, with a drop in temp of 17 degrees, that could mean a diff in DA that migh result in a drop of approx another 1/10 of a sec, putting him at 9.84.

it amazes me that people who have never raced a viper, want us to believe they know so much..

[v10tt]

Wicked trap!!

[V10powerr]

andy,
great stand up response, did not bash anyone, just complemented his car.
VE should be proud to have u.

as you can see my point was that if his car made 600 and HC car makes 650, 50 is very low for hc, and ran a similar time, in my opinion.

[DFox]

Congrats man!!

[PRVT JET]

andy,
great stand up response, did not bash anyone, just complemented his car.
VE should be proud to have u.

as you can see my point was that if his car made 600 and HC car makes 650, 50 is very low for hc, and ran a similar time, in my opinion.

Forget the E.T, 4 MPH more at those speeds is about 70-80 rwhp.

Isaac

[FLATOUT]

It looks similar to you because you don't have a firm grasp of weather, density alititude, and how 60' relates to final ET. If you understood how all of those things affect the final recipe you would realize that the difference is significant when you are in a same track same day environment.

The other blue car also weighed in on the track scales at 3,700lbs with driver, and mine weighed 3,490lbs with driver. The air he was in was very good and when our air was good I didn't take advantage of it, struggling to get comfortable with the car. We could run both of these cars side by side right now and they would not look similar or close from a roll.

The numbers Jack B posted above are very accurate in terms of the potential of the car if I can drive it to those numbers. There's still a lot of Indian involved even when the Arrow is working the way it should.

And thanks for the compliments it's a process people that race understand and isn't something that makes sense to those that have had no reason to apply it.

Andy

andy,
great stand up response, did not bash anyone, just complemented his car.
VE should be proud to have u.

as you can see my point was that if his car made 600 and HC car makes 650, 50 is very low for hc, and ran a similar time, in my opinion.

[Evan@D3PE]

It looks similar to you because you don't have a firm grasp of weather, density alititude, and how 60' relates to final ET. If you understood how all of those things affect the final recipe you would realize that the difference is significant when you are in a same track same day environment.

The other blue car also weighed in on the track scales at 3,700lbs with driver, and mine weighed 3,490lbs with driver. The air he was in was very good and when our air was good I didn't take advantage of it, struggling to get comfortable with the car. We could run both of these cars side by side right now and they would not look similar or close from a roll.

The numbers Jack B posted above are very accurate in terms of the potential of the car if I can drive it to those numbers. There's still a lot of Indian involved even when the Arrow is working the way it should.

And thanks for the compliments it's a process people that race understand and isn't something that makes sense to those that have had no reason to apply it.

Andy

Holy cow why is elie's car so heavy? Mine weighed 3650 with the blower

[Snakebit10]

Thats gotta be a guy around my weight in that Viper lol...250lbs or so right? Congrats on the record run. I can't imagine what a h/c ACR can do dancing between corners on a circuit track with this kind of accelerative ability. Gotta love NA.

[1.8t]

Andy can you post the slip or at least the breakdown?

*Ahem*

[FLATOUT]

*Ahem*

Sorry it's Monday and swamped at work. Still have everything from the track loaded in my truck. I'll try to find it and post it later. I have a bunch of slips crammed in the glove box at home.

[CasperZR]

Certainly enjoyed hanging with all the Viper folks yesterday. The car looks, sounds, and runs the part, Andy. Well done. Once I get through some of the pictures I snapped off yesterday, I'll be sure to throw them in here for you.

[FLATOUT]

Certainly enjoyed hanging with all the Viper folks yesterday. The car looks, sounds, and runs the part, Andy. Well done. Once I get through some of the pictures I snapped off yesterday, I'll be sure to throw them in here for you.

Always great to see you Jay, really glad you guys came out.

[v10tt]

Found a nice video of the event here:

[KB Viper]

awesome job Andy and it was great meeting on Friday!

[FLATOUT]

At the 18:20 mark you can see a run I made where the car got loose on the 1-2 shift, I get out of it and then back in it and it goes 10.8@137. This pass would of had the best trap of the day if it would have hooked and I could have stayed in it.

Found a nice video of the event here:

- - - Updated - - -

awesome job Andy and it was great meeting on Friday!

You too Kris wish you could have stayed an extra two days so you could have come out and run with us.

[ACR]

Upon reading that, I'd assume you have zero expertise in drag racing. Not nearly enough, to make valid comparisons based on data, anyways.

ET is all about traction, and the first sixty feet of the track.
MPH is all about horsepower. A good indicator of ET potential, if the first 60' can be done well.

The bolt-on car with a custom tune trapped 134 mph - on a colder weather day (low 50s outside)
The heads/cam VE car went 139 mph - on a warmer 67F day.

That is a substantial difference in horsepower. ET isn't an indicator of horsepower, it is mostly about traction.

I agree with most of what you said, however 67 vs 50s are both cold enough. The correction factors on a dyno, assuming same bar conditions, between 50 and 67 are 1.05 and 1.08, respectively, hardly worth talking about (not to mention he was higher than 50). But yes DA makes a big difference when drag racing, traction is also key

FYI: just because a member may not understand the concepts, doesn't justify jumping on him. I get it, VE you have a product to sell/market, it's a good product (albeit expensive) but hey an ounce of honey...