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  1. 3

    Gen 3 stock header size

    Exhaust tubes are measured by outer diameter. I measured mine with calipers and am certain they are 1-3/4". My American Racing Headers and tune bumped me from 440whp to 500whp. This was with no cats and stock everything else, including OEM cat back with cross over. The gain was at all points...
  2. 3

    Gen 3 stock header size

    The outer diameter is 1-3/4". I measured mine prior to my header purchase. I do wonder why some folks chose the 1-5/8" primary :dunno:
  3. 3

    Throttle body porting

    This was one a heads/cam car. The throttle body shown above is from arrow racing, but I dynoed with an X-Metal throttle body. For all intents and purposes, these two pieces are virtually identical. Results on my back-to-back dyno were: 614whp/590wtq – Stock throttle body and OEM air filter...
  4. 3

    Headers HP

    I dug around and found an old image my headers dyno before the final tune. Its shows 490whp, but later went back and corrected the slight richness at 5500+rpm and gained me those extra 10whp. I couldn't find my stock dyno, but found one one line that is from a stock Gen III and is virtually...
  5. 3

    Throttle body porting

    I single blade throttle body will provide some healthy gains. Back to back dyno showed +20whp in my case. However, I didn't port the OEM, I just bought a nice CNC'd piece from one of our supporting vendors. What you see here on the bottom is what you should be aiming at:
  6. 3

    7:15 Ring Time in ACR by VCA Member

    Was looking at the video again and the A/C light is lit.....LOL.
  7. 3

    Viper Crash in Hungary

    Wow. Blast from that past. I recall seeing that crash like 10 years ago. I still agree that the highway/motorway isn't the best venue for this activity.
  8. 3

    Headers HP

    My Gen III laid down 440 whp and ran 12.4 @ 117mph. I added American Racing Headers (stock mufflers) and a tune from A&C performance and dynoed 500whp and ran an 11.5 @ 125mph. The DA was about 2500 ft in both cases. In short, I found about 60whp and ran almost a second quicker at 1/4. I...
  9. 3

    7:15 Ring Time in ACR by VCA Member

    Wow. Obviously very skilled and comfortable behind the wheel.
  10. 3

    Gen 3 5 axis CNC heads in production. Pics inside.

    Awesome work Greg. Glad to see that my heads/ports were baselined off my heads. I am certain they will perform just as well.
  11. 3

    Trailering

    If towing using regular hooks or T-hooks, don't forget to cross tie. Bunny hoping can occur. Here is mine.
  12. 3

    Insurance for Viper as primary vehicle?

    Interesting. I am in Texas and had no problem adding the Viper to my Geico policy (3rd vehicle, single, clean-ish record). Heck, I was still in my 20s at the time.
  13. 3

    Video of my car at Texas Invitational

    Great runs along with some great competition. Now tell me how much pressure you run on those DRs. My car is all over the road with my 345/35-18 MTs.
  14. 3

    11.1@ 127 Pretty strong!

    It's quick no doubt, but it is on drag radials. I certain that's helping a bit.
  15. 3

    SRT10 with Huge Cam. Anyone Familiar?

    The referenced heads/cam car sounds so different than mine. The following video shows my car idle and accelerating. My exhaust setup consists of American Racing Headers, no cats, and ACR-X borla exhaust. Direct Link: http://youtu.be/5JuHFa-S38k Embedded Video: http://youtu.be/5JuHFa-S38k
  16. 3

    1/2 Mile Shootout: 165+mph all motor...Viper spins out !!!!!

    So I buttoned up the engine and piloted the car, but this N/A speed belongs all to you. This is the proof of your phenomenal job with these heads. I have driven 5,000+ hard miles since the build. I have done drag racing, road racing, road rallies, and half/standing mile events. As for rods...
  17. 3

    643whp/606wtq: Greg Good Heads/Cam with A&C Tune

    I am already pushing the envelope with respect to the strength of our cast pistons. The engine was qualified for 505 horsepower (flywheel) and I am pushing 750+ horsepower (flywheel). While the valve train system has been updating, I know I am eating into a lot of the design margin. No tuner...
  18. 3

    1/2 Mile Shootout: 165+mph all motor...Viper spins out !!!!!

    I do have upgraded brakes. I am using the StopTech (ACR) rotors with a fairly aggressive CarboTech pad. The braking power wasn't an issue, its the fact that I was getting some bad biasing after my first run. My front right was wanting to lock well before any other corner. I felt that the rear...
  19. 3

    1/2 Mile Shootout: 165+mph all motor...Viper spins out !!!!!

    George, thanks for sharing your experiences. You are absolutely right, those emergency vehicles were just off the runway at the 1/2 mile mark!!!. I did the math on your gearing, and in my opinion, is perfect. On OEM sized rears and 3.55 final with .80 5th gear land you at 5900rpm on your...
  20. 3

    1/2 Mile Shootout: 165+mph all motor...Viper spins out !!!!!

    I participated in the wannGOFAST 1/2 Mile Shootout in Carrabelle, Florida this last weekend. It was a very nice day filled with great people and fast cars. The Viper community was well represented with 4 Vipers (Gen2, 2xGen3s, and a Gen IV). I knew gearing was critical as I had discovered...
  21. 3

    high flow cats on a gen 4.

    Kyle, I find it very peculiar that you show virtually no gain on the dyno after all those mods. However, didn't you manage to go about 15mph faster (170 to 185mph) at the Texas Mile? That increase in speed is indicative of a very substantial gain in power. BTW, great runs at the mile. 185mph...
  22. 3

    75 shot, tune needed?

    I just realized that I never finished my "talk to your nitrous company" thought....lol For a wet shot, the typical kit is jet for 93 oct fuel. If you are going to use some sort of race fuel, be sure find the proper fuel jet for the intended shot size. Your nitrous company will be able to...
  23. 3

    75 shot, tune needed?

    Most "tunes" are more aggressive on ignition timing and leaner on the air/fuel; both which are typically big negatives for nitrous use. You also need to evaluate your friends knowledge with respect to his "good gas" advise. Most race fuels have a leaner stoichiometric levels under the same...
  24. 3

    Diesel Dodge tuned to 1,100 hp smokes a Viper — and the crowd

    That SC car was only making 5lbs of boost. Later found it had a loose intake charge pipe. Not making excuses, but we all now that's slow time for a SC viper.
  25. 3

    TX2K13 - Who's going?

    This is just up the street for me. Not officially participating in any of the TX2k sanctioned events, but will probably partake in some of the evening cruises around town.

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