Guesstimate what my rwhp/tq is going to be

Discussion in 'RT/10 and GTS Discussions' started by APGTS, Mar 31, 2012.

  1. APGTS

    APGTS Viper Owner

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    98 gts
    b&b headers,hi flow cats, cat back
    smooth tubes
    k&n filter
    1.7 roller rockers
    Roe racing sct tune

    Im installing the roller rockers and uploading the tune then going to have it thrown on the dyno to make sure a/f ratios are cool and no flat spots. Id really love to see 500rwhp and 500< rwtq but i feel like thats a real stretch what do you guys think?. Also should i be going with anyone else for a tune and im also going to have the fans kick on earlier and skip shift disabled, anything else i should specify?Also im I over looking any other relatively cheap/easy mods for power? . . .other misc mods i have now are eibach springs/cups, short shifter, gen4 bbk. Also looking to do colder thermo stat & possibly radiator idk
     
  2. 99 R/T 10

    99 R/T 10 Enthusiast

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    Just a guess, but 435RWHP/495RWTQ. With a good tune, you might get another 15RWHP. To get over 500 RWHP, you wull need a set of Greg Good heads.
     
    Last edited: Mar 31, 2012
  3. APGTS

    APGTS Viper Owner

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    Damn so I was way off lol
     
  4. hyph

    hyph Viper Owner

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    Yep pretty much what I was thinking.

    I had bellanger headers, magnaflow exhaust, filters and tubes, SCT tune and made 445hp/495tq.

    Keep in mind though, with my mail order Roe tune I only had 410hp/480tq. I had my shop dyno tune my SCT and picked up the extra power.
     
  5. Cobraken

    Cobraken Viper Owner

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    Never enough! :lmao:
     
  6. APGTS

    APGTS Viper Owner

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    Hmm so you think I would gain with a custom dyno tune over the mail order roe
     
  7. hyph

    hyph Viper Owner

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    Yes. Roe sends you a more conservative tune so you don't blow your stuff up and blame them.
     
  8. -FROG-

    -FROG- Enthusiast

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    Yep. I agree.
     
  9. APGTS

    APGTS Viper Owner

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    makes perfect sense
     
  10. APGTS

    APGTS Viper Owner

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    man so this thread kinda burst my bubble alil :(
     
  11. hyph

    hyph Viper Owner

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    Just run a 200 shot of nitrous and gain 200whp/250 wtq. You can put together a complete system for under 2k.:2tu:
     
  12. NVMYVPR

    NVMYVPR Viper Owner

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    +1 on the heads. I have a Gen I that I am procuring parts for in my quest for 500RWHP and everybody I have spoken to have suggested all the mods you are doing plus a set of GG heads. The heads being the single biggest part of the equation the take advantage of the other mods you are doing. I am interested to see what you get minus the heads.

    Craig,
     
  13. RedEnuf93

    RedEnuf93 Enthusiast

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    My Gen 1 did 410HP and 476TQ with smooth tubes, Belangers and 3" exhaust. and its missing your +50HP. (Gen 1 400HP, Gen II 450HP)
    You want 500HP, this is going to be easy!

    A safe and conservative 50 or 100 shot of "wet" nitrous and you'll get well above 500HP... that will also shoot your TQ numbers much higher than the 450...

    or if you dont like the idea of having explosives in trunk, good set of heads will do the job safely;-)
     
  14. plumcrazy

    plumcrazy Viper Owner

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    agreed, my 98 was 421 when it was stock with filters, add the headers and RR's you should be 450+
     
  15. APGTS

    APGTS Viper Owner

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    hmm i guess that im now back down to reality anything around 460rwhp with full exhaust, rr's, smooth tubes/filters, & tune should be pretty good
     
  16. DrTaco

    DrTaco Viper Owner

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    I'll echo everyone else and say 460ish. If you're looking for 500 you'll b able to hit that without spending TOO much more $, easy. For a quick comparison check out my mods/sig, I'm making 555hp.
     
  17. MADMAX

    MADMAX Viper Owner

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    If you want more power, you need to improve flow through the engine - sort of obvious I guess.
    Your stock heads are the biggest flow restriction, followed by zorst and to even lesser extent the other cheaper and easier things to replace.
    Improve your flow, in whichever way you're comfortable with.
    Ade
     
    Last edited: Apr 1, 2012
  18. Roysviper

    Roysviper Viper Owner

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    see my comment above.....
     
  19. 99 R/T 10

    99 R/T 10 Enthusiast

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    Not sure if you have seen the GG heads in the classifieds:

    http://classifieds.viperclub.org/showproduct.php?product=5637&title=gen-1-greg-good-heads&cat=47
     
  20. GONABITE

    GONABITE Enthusiast

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    My 98 with B&B headers, exhaust and smooth tubes put me at 460 RWHP, your adding a tune and 1.7 rockers I will take a guess at 469. Just bolt on the ROE supercharger and you will see 610ish!!!
     
  21. costanZo

    costanZo Viper Owner

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    I'm pretty much in the same situation as you. I've been buying my parts since last year and will finally be done buying everything and having it all installed by June. I too originally hoped to achieve 500rwhp, but have realized it isn't logical without doing the heads.

    My current mods are:
    RandomTech High Flow Ceramic Cats
    Corsa Catback Exhaust
    K&N Dual FIPK
    KW Variant2 Coilovers
    Dave's Big Brake Kit
    iForged Classic II 3piece Wheels

    The rest that will be installed are:
    Performance SCT Tune
    AmericanRacing 1 5/8 Stepped Headers & Metallic High Flow Cats(I might decide to not run cats at all)
    172 Degree Thermostat
    T&D 1.7 Shaft Mount Rockers
    New Pushrods
    Fidanza Aluminum Flywheel
    Centerforce Clutch
    Hydrolic Slave Cylinder
    3:55 Gears
    B&M Short Throw Shifter
    AB's QualityWires
    Power Steering Pulley
    Power Steering Bracket
    Wood house Engine and Transmission Mounts
    New Michelin Pilot Super Sports

    I know you guys mentioned around 460ish, but I was originally hoping for around 475rwhp at least. If that's actually realistically possible. I know with the gears the readout will be lower, so I'm going to have the car dyno'd before the gears and after. Either way, the car will be a lot more fun to drive and I will be extremely happy with it regardless.
     
    Last edited: Apr 2, 2012
  22. -FROG-

    -FROG- Enthusiast

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    My 01' motor had some of the highest HP readings I have seen for the mods I had and it's mostly the common bolt on's, except for head work.
    This got me 467HP and 508TQ - 11.3 1/4 mile @125MPH on Drag Radials:

    SVS Headers, highest flowing headers made in my opinion. It's a "race only" header from what my research has shown... This is where I got all my power I think. Notice the equil length headers and perfect 5 into 1 collector... this is where these headers domintate in my opinion.
    [​IMG]

    NO CATS.... NO REAR EXHAUST = LOUD! (also big power gains from no cats...)
    Side Borla exhaust
    Smoothe tubes / K&N drop in's
    Alum flywheel
    SCT Tune
    ...can't think nof anything else power related to get the power I did.


    I installed rockers and axctually lost power... Down to about 457HP, but again... this was another day on the Dyno, so who knows if the temp / weather conditions played a role. This may have also been because the rockers are not useful without headwork, then they will add power. I still managed an 11.6 at the track with the rockers, but I was also on a harder tire... and had alot of tire spin compared to my softer drag radials (BFG G-Force DR), so that is where I think I lost the .3 tents from at the drag strip... from a harder tire (Nitto 555).
     
    Last edited: Apr 2, 2012
  23. APGTS

    APGTS Viper Owner

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    seriously pretty much spot on what im planning on doing... I know ill love the gears now I just hope they arent going to be to much/counterproductive when i throw a paxton on in the future
     
  24. APGTS

    APGTS Viper Owner

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    hmmm so I got two questions
    #1 do you think i will gain from taking my high flo cats out? currently b&b headers, cats, cat back
    #2 I really dont plan on doing head work in the future so are roller rockers a waste? I always thought they increase the lift of the cam
     
  25. costanZo

    costanZo Viper Owner

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    #1) I was also wondering this going catless/straight pipes.. It seems logical, but just how much extra rwhp could you squeeze out?
    #2) I already bought my Rockers and have heard nothing but positive things in reference to increasing power anywhere from 15-18rwhp.
     

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