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np208 power rating?

Discussion in 'The Garage' started by dirtwarrior17, Dec 30, 2004.

  1. dirtwarrior17

    dirtwarrior17 Banned

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    My old 350 took a dump and spit out a main bearing about a year ago and i just recenlty had the $$ to stuff a built and bored 350 in the beast 3 months ago. Motor has high comp pistons, cam, high pressure fuel pump, 670 cfm 2 bbl throttle body, holley 89 pph injectors, holley intake manifold, headers, camel hump heads, a k and n, 3" exhaust, and has been bored .030. All this should be good for 400 horse at the flywheel and i plan to put an electric supercharger on and get the heads ported and polished later which should bump it up to 450. Im not worried about mud but hills and races with civics :cool1: :laugh: made me wonder how much it can handle. Any body know the hp rating for a stock np 208?:confused:

    Torque converter has a 2400 stall and will launch hard.
    Tranny has a corvette kit and will handle the power no problem.

    I already sold my dirtbike and i owe my mom 2000 from the motor and parts so im broke for now. Need to know if itll will hold until i have the money to get it built.

    '88 k5 with 6" lift and 35x12.50 big foots
     
  2. Hossbaby50

    Hossbaby50 3/4 ton status

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    Run it till you break it, especially if your broke. Just don't let anything hit the case cause the aluminum is thin and will crack and don't do alot of hardcore jumping.

    Harley
     
  3. TJS

    TJS 1/2 ton status

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    I have a mild built 350 w/votec heads and soon after I put it in my truck, I tore the annuls assmbly apart. Got another 208 at the junk yard for 75.00. I still have the old case taken apart and the new part waiting here in a box.

    T.J.

    www.tjsperformance.com
     
  4. 83ZZ502_Jimmy

    83ZZ502_Jimmy 1/2 ton status

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    83 Jimmy- 520ish HP and 580 Tq - Run hard at Dirttrack and on asphalt track

    83 K10- 578 dyno'ed rwhp

    88 K5- ZZ4 Crate 355HP 405Tq

    87 K5- HT383 325HP 415Tq

    All through 208 t-cases. Don't smack it on a rock and keep it full of lube (ATF) you'll be fine IMO.

    John
     
  5. muddog

    muddog 1/2 ton status

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    I ran one for 3 years in my 85 K5 39.5 boggers, 60front, 14 rear, locked front and back- no problems


    I snapped 3 output shafts on 205's- 2 behind TH400's and one behind a 465 4spd
     
  6. dirtwarrior17

    dirtwarrior17 Banned

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    good to know thanks.

    My dad is sayin the front tires will spin quicker then the back in 4low and running it on assphault is a good way to emty ur pockets........... different ratio for front/ rear on a case?
     
    Last edited: Dec 31, 2004
  7. dirtwarrior17

    dirtwarrior17 Banned

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    What is the annul assembly? I know motors but transfer cases r diff story.

    How much do u want for it and where are u located?
     
  8. loafer

    loafer 1/2 ton status

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    ???

    Front and rear outputs have the same ratio low or high. The only way the front is going to spin quicker is if the axle ratio is different.
     
  9. fatbob

    fatbob 1/2 ton status

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    This might be in your future

    Common sense tells you to take it easy on it until you can AFFORD to replace it, but you KNOW you want to test the motor out.:D
    But check out this thread http://coloradok5.com/forums/showthread.php?t=124747 and they weren't even beatin on it.
    Beware of Murphys Law
     
  10. Hossbaby50

    Hossbaby50 3/4 ton status

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    Something had to be terribly wrong in that transfer case to do that. I had to pound the hell out of mine to get it to break badly.

    Harley
     

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