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Author
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Topic: 931 rw hp Viper
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John Hennessey / HMS
Texas VCA Member
From:Houston, TX
Registered: Oct 2000
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Here are a few details for my fellow power freaks: Venom 800 Twin Turbo, running 12 psi boost, motor has stock bottom end. Best pull of the day netted an actual power output of 931 rw hp and 952 rw lb-ft. This was done in an ambient air temp of 61 deg F. The numbers corrected down to SAE and were 883 rw hp and 902 rw lb-ft. 7 pulls were made today and peak SAE corrected numbers were between 840 - 883 rw hp (depending on heat soak, fuel calibration). This V10 is making over 700 rw hp from 3500 rpm to 6000 rpm!
Special thanks to our customer Ed Illgen for allowing us to tweak his Venom 800 Twin Turbo. Ed - me, Jason and Joe have had a lot of fun seeing your power numbers go up over the last few weeks. Have a great weekend everyone. John Hennessey
Texas VCA Member This message has been edited by John Hennessey / HMS on 01-05-2002 at 05:59 AM
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Martin D
From:Dunwoody, GA USA
Registered: Dec 2000
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W O W!!!!!!Awesome numbers. Makes me want one! Regards, ------------------
Martin Drucker
98RT10
HMS Venom 650R
565 RWHP 563 RWTQ
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DgeViper1
NY/CT VCA Member
From:Manhasset, NY, USA
Registered: Jan 2001
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Terriffic numbers John! Hows that puppy as a daily driver? Do you have a graph with the A/F?------------------
Dan B.
DLM Level 1 Supercharged ACR
617RWHP 675RWTQ This message has been edited by DgeViper1 on 01-05-2002 at 08:53 AM
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Anthony - 98 GTS
From:Houston, Texas
Registered: Aug 2001
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John,Great numbers!!! Is this the first customer owned Venom 800TT? I hope you can make it to the Viper meeting today - I look forward to meeting you. Anthony ------------------
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John Hennessey / HMS
Texas VCA Member
From:Houston, TX
Registered: Oct 2000
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Martin - thanks chief, you know where to find us when and if you get bored with 565 rw hp.Hi DanB, my fellow boost addict. We do not have the wideband AF data acquisition on our Dynojet. However we do have a hand-held wideband and we were generally in the 11-12:1 range. Its been raining since these tests were performed, but I would expect that the car is as driveable as it was when it made 700 rw hp. In fact it is very driveable and some who have ridden in it have commented that it sounds like a stock Viper with a cat-back, until you mash the gas, then it sounds like an F16 on afterburner. Hi Anthony, this is our Venom 800 Twin Turbo #1 (same car on the cover of MOTOR TREND a few months back) and is owned by a customer in Illinois. We plan to bring it to the Houston VCA meeting today if the weather cooperates. Take care guys and thanks for the kind words. Hopefully we can take this current dyno queen to the track soon. John Hennessey
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DgeViper1
NY/CT VCA Member
From:Manhasset, NY, USA
Registered: Jan 2001
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Thanks John.....you are in a very comfortable place if turbos require the same richness that SCer cars do. I'm assuming they do. Good job.------------------
Dan B.
DLM Level 1 Supercharged ACR
617RWHP 675RWTQ
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Sheyster
From:San Diego, CA.
Registered: Dec 2000
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Nice numbers! I wonder how long the stock bottom-end will hold up with 12 psi/952 maxtq?------------------
Sheyster.
2000 GTS - Steel Gray Pearl - Silver Stripes Web Site: www.sdvipers.com "The only thing we have to fear is fear itself." F.D.R. This message has been edited by Sheyster on 01-05-2002 at 01:34 PM
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Russ M
SoCal VCA Member
From:LA, California
Registered: Nov 2000
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WOW!!!John stock bottom end??? I though everything you did included a built bottom end? This makes YOUR viper the most powerfull on a stock bottom end, you take the spot away from a nitrous car. ------------------
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King GTS
Texas VCA Member
From:Houston, Tx USA
Registered: Nov 2001
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quote:
Originally posted by Martin D:
W O W!!!!!!
Awesome numbers. Makes me want one!
Regards,
That's just what I was thinking! ------------------
Trey Pullen
01 GTS/Serpent 505
+ TNT 3" Stainless Exhaust
+ 1 3/4" TNT Headers
+ TNT 65mm Throttle Bodies
+ Ported Intake manifold
+ Race Air Induction
+ 1.7 Billet Shaft Rockers
+ Hardened Pushrods
+ 8.5 mm Plug Wires
+ 3.45 Rear End
+ TNT Aluminum Flywheel
Horsepower ****
537.2 HP & 587.9 TQ
459.2 RWHP & 502.5 RWTQ
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John Hennessey / HMS
Texas VCA Member
From:Houston, TX
Registered: Oct 2000
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Shey/Russ - when we were operating in the 7 psi / 700 rw hp range, the stock bottom end was fine and never caused us an issue. Now at 12 psi and 880+ rw hp, I still think we are ok for the intended use of this kind of power as long as our AF is in check. I would suggest however, that anyone wanting to make this kind of power, that they consider fortifying the bottom end with good rods, pistons, etc. One thing to consider is that turbos, while making a huge amount of power, make their power while not being as hard on internal parts as motors running big shots of gas. Turbos are known to "hit" much softer. Tonite, I will find out of I can handle holding the throttle down for more than a few seconds.Trey - see you at Cabo - we plan to bring this car out tonite.
John Hennessey
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Martin D
From:Dunwoody, GA USA
Registered: Dec 2000
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John, Let us know how things go tonight.
Thanks,
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Martin Drucker
98RT10
HMS Venom 650R
565 RWHP 563 RWTQ
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FastMatt
AZ/NM VCA Member
From:alamogordo nm USA
Registered: Sep 2001
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Man those are some #'s It is about time you turned the boost up on that thing! A TT viper with out 1000hp, is like a Movie with out car chases, "you can do it, but why?" so are you going to take that thing out now, and get some "pay-back" on Brice's supra?
http://forums.corvetteforum.com/zeropost?cmd=reply&id=1894071 ------------------
Matt Monett www.dynamicracing.com
2000 Viper GTS ACR 11.74@127 at 3600ft stock w/ 150 shot
95 Stealth RT TT 10.88@129.16mph @ 3600ft with 18psi with a 70hp shot. 10.96@129.96 @ 3600ft with 22psi and No NOS. All rus on 4 nito 555 drags, 100% street car, 4070lb with me in it(worlds fastest Dodge Stealth)
93 RT TT 11.74@120 @3600ft
92 Stealth RT TT
95 Eclipse GS-T
2000 Excurtion 4X4 7.3L turbo D 450hp/950ft/lb @30psi This message has been edited by FastMatt on 01-05-2002 at 09:39 PM
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John Hennessey / HMS
Texas VCA Member
From:Houston, TX
Registered: Oct 2000
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Martin, I took it out last nite to put a few miles on it and it runs and drives very well. Feel free to ask some of the Houston folks if they think it runs as fast as the dyno sheets look...Have fun, John
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Russ M
SoCal VCA Member
From:LA, California
Registered: Nov 2000
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John,Common don't keep us in suspense did you hand the supra boys their a**? ------------------
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John Hennessey / HMS
Texas VCA Member
From:Houston, TX
Registered: Oct 2000
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No Supra action this time out, maybe next time. The power delivery is so smooth and effortless, all I was really doing under acceleration was shifting a lot as the car goes thru 4th gear like a stock Viper goes thru 1st. We will try to get to the track sometime soon and see if we can better our 10.1 @ 137 run which we made with 180 less rw hp.John
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LT-5@redline
From:White Plains, MD
Registered: Dec 2001
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931 RWHP/ 951 RWT at ONLY 12 PSI !?!?!?!? That is absolutely incredable...I know it's not difficult to harness the idea of over 1000 HP out of a TT Viper...but 1000+HP from ONLY 12 PSI is KILLER performance...and very drivable to boot...all I can say is WOW. ....can't wait till you dail it up to 15 PSI, LOL.
Hahaha, did someone say something about a supra ?!?!? I want you (John) to find the S.W. character or any other T88, T72, etc single turbo supra which the "internet supra geeks" hail as their god, and SPANK it like a celica real quick on the way back home from your DEEP in-to-the nines run at the strip. Once again, way to go John. 
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Kevin D. --- 91' ZR1 Vette
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MES
Proud VCA Member
From:Royal Palm Beach, FL
Registered: Feb 2001
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Yes, very nice numbers. That HP curve looks sweet, nice and smooth. ------------------
1997 GTS BTR Nitrous/propane , Belanger headers , Corsa 3" cat back , no cats, smooth tubes, S&B filters, VEC1, BTR Rollbar
436.2/485.2 N/A
582.5/681.9 NOS My cool Viper website
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houstonT
From:Houston, TX
Registered: Jan 2001
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John, once again, thanks alot for the great ride in your beast, it does pull like a raped ape, no doubt about it... It is much faster than the time you, me, and bryce lined em' up. Give me four weeks, my new car will be finished, and we'll do it again.
LT - you can't be more than 15 years old, your maturity shines through in your post. Why bash a supra? Are you jealous for some unknown reason? You can even ask John, i think SW has him covered (as well as MANY of the cars roaming the streets nowadays). John's car will see the track very soon, with SW behind the wheel, we shall see then what the TT car can do.
I love vipers, always have, and am very good friends with all of the viper owners here in houston. They seem to come across as much more mature though than some of the others that post here.
Anyhow, I don't want to take anything away from this car, it is simply bad. I felt the power of the TT car last night, and i can't say it enough, it is VERY quick/fast. ------------------
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LT-5@redline
From:White Plains, MD
Registered: Dec 2001
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Just out of curiosity John, Matt, or anyone else who would know. What boost/RWHP was the Venom TT at the first time when it raced those two supras ? Becuase I know John mentioned he got the thing tuned UP to 757 RWHP/844 RWT AFTER that race (I believe) ...and now, 180 RWHP more than that, going to 931 RWHP. So my question is, since that race did he gain over 180 RWHP ? Another thing, can/ does the Venom 800 TT do 12 PSI on PUMP ? Thanks...
By the way, I saw the video for that race...one of those guys (the PHR stage 2+) had a HUGE jump on the viper (which the 800TT made up VERY QUICKLY I might add) and the other one bryce was too far out of the picture (the camera was shaking furiously at that point) to even see what was happening. Anyway, with the power and torque (not to mention drivability and responce)of the Venom now that same situation would not even be a race...
P.S. It still makes me dizzy to think what that thing can do at ONLY 12 PSI, LOL.
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Kevin D. --- 91' ZR1 Vette
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houstonT
From:Houston, TX
Registered: Jan 2001
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LT - if you read the first post on this thread you will see that the PHR car did NOT get a jump. I brake boost when i launch the car (as i did then) and even on an even punch, my car would lurch out like that. John will tell you, we all essentially punched at the same time, i just perfected driving that car... John will also tell you that our cars were dead even when in gear. I jumped 1 car length on the start, when both of us were in gear, it stayed that way, he made up 1/2 car length when i shifted from 4th to 5th gear (he was still in 4th at the time). When i got back into it in 5th gear, we were even again...
Bryce's red car did indeen spank the both of us. At that time i think john was running 7 psi and pump gas, now, he is running 12 psi and race gas... Hope that clears up some of the confusion.
Peter------------------
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Albert Chlouber
From:Houston Texas
Registered: Oct 2000
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I just have to say one thing, the car shocked me last night. About 20 cars went out last night to see the car run, and it was awesome. It is for sure going to make a 9 sec pass. I have no doubt. I couldn't keep up with it, so it looks like its back to the drawing board for me. It just goes to show there is always someone faster.------------------
9.993 @ 142.76 w/200 Shot
713-857-9998 Nitrous Express Master Wholesale Distributor
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John Hennessey / HMS
Texas VCA Member
From:Houston, TX
Registered: Oct 2000
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LT5, Peter, no doubt there is love for all fast cars here. No need to rank them in any kind of special order. I will be the first to say that there are probably a lot of Supras out there that can beat me like a drum. Nothing wrong with that.Albert, as always, you are fast and a gentleman. I have no doubt that you will make you car faster which in turn, we all will have to be on our toes. Did someone say 15 psi? For some reason I have been thinking about that number all weekend. If we were able to attain that, then we would be close to 1000 rw hp. Maybe later, I am just hopeful that we get a solid 1/4 mile pass soon. We will keep you posted. Have a great week everyone, John Hennessey
Texas VCA Member This message has been edited by John Hennessey / HMS on 01-06-2002 at 09:01 PM
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LT-5@redline
From:White Plains, MD
Registered: Dec 2001
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Wow.....Albert, were you in your "9.993 @ 142.76 w/200 Shot" trim when "you couldn't keep up with it" ?? (meaning on your 200HP shot during the run)
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Kevin D. --- 91' ZR1 Vette
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SNAKE EYES YOU LOSE!
From:VARIOUS PARTS OF COUNTRY
Registered: Oct 2000
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BIG HORSEPOWER NUMBERS.......INTERESTING!------------------
99 RT10 VENOM 700 10.47 @132.54 MOTOR ONLY
00 GTS VENOM 650 567 R.W.H.P.
95 ZR1 LPE TT 03 820 R.W.H.P. W/ADJ.BOOST CONTROLLER FASTER THAN A VENOM 800 TT
00 Z28 CAMARO LPE 427 C5R PFS#1 9.72 @ 142 M.P.H. MOTOR ONLY.... WHO'S YOUR DADDY!
68 PLY HEMI ROAD RUNNER RESTORATION PROJECT This message has been edited by SNAKE EYES YOU LOSE! on 01-06-2002 at 10:07 PM
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Albert Chlouber
From:Houston Texas
Registered: Oct 2000
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Kevin, I was actually on our new set up and spraying a 300+ shot. I hate to say I got beat, but that car is just nasty fast. I let out after he put about 5 cars on me. Just poped it in neutral and coasted down the road. You have to give props when its due, and the car is very fast.------------------
9.993 @ 142.76 w/200 Shot
713-857-9998 Nitrous Express Master Wholesale Distributor
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posted 01-05-2002 04:17 AM 
posted 01-06-2002 10:05 PM