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  1. Vipersix

    Anyone using an electric water pump??

    I would guesstimate somewhere in the neighborhood of 1%. It's really not a matter of gaining power so much as a reliability thing. Electric pumps don't have a rubberized belt which can break in the middle of a race. Yes, they can blow a fuse such as Adam suggested, but you can blow the fuse...
  2. Vipersix

    I feel dumb asking but

    As long as the camber isn't excessively canted inward you'll be fine. Take it to an alignment shop to check the numbers; as long as they can get it pointed in the correct direction it's only a visual problem. If they are unable to get the camber correct, they likely will have spacers at their...
  3. Vipersix

    Can injectors be to big?

    Try not to get so caught up with the 80% duty cycle madness. This number (or some use 85%) was intended as a MAXIMUM to allow for a bit of breathing room if you underestimate your power output. This also gives the injectors some time to cool. Yes, injectors can be too big. Obviously an...
  4. Vipersix

    Blueprinting an Engine

    A good friend of mine has been playing around with cars for probably 40-some years. Over the years he has been accused of exceeding the various restrictions placed on race motors. Every time the inspection team disassembled his motors they came up empty handed. The reason his motors were so...
  5. Vipersix

    Can injectors be to big?

    If you plan on upgrading in the future, buy large injectors. Unless you go so huge that you begin to wander into the 25% duty cycle area you won't even notice anything. I personally try to plan on a 50% duty cycle so I have room for growth. Just don't short-change yourself. Small is bad...
  6. Vipersix

    TKO600 VS. T56 Viper Spec

    The TKO600 is rated at 600 lb/ft tq. while the Viper spec T56 comes in at 650 lb/ft. So as has been said numerous times already, either tranny is fully sufficient for your numbers. Cost will be significantly higher for the T56 but you'll have the availability of the extra gear. How many...
  7. Vipersix

    Timing question

    I just assumed that you did not reinstall the O2 sensors. Most people I know who remove their cats also remove the sensors so I just assumed you did as well. Assuming the correct sensor operation and no codes then... You've got yourself an interesting scenario! I'm not sure why you would be...
  8. Vipersix

    what pushrods to use?

    "Think" should never be used when determining pushrod length! Do yourself a favor by purchasing a pushrod checker (or borrowing one) for all of about $10-$15 and do it correctly!
  9. Vipersix

    Timing question

    Hmm... very intriguing! So you said that you had no warning lights during the first few weeks but you never mentioned if you eventually got one. Did you? Pull any codes? Nothing really jumps out at me as a culprit for all this madness. One thing to consider is the lack of cats. Most...
  10. Vipersix

    Is there a manual transmission that can handle 800RWHP

    Depends what you plan on doing with your high power pony. 6-speeds are crap if you plan on dragging or doing a road course like SCCA. Modular Mustang builds a darn near bulletproof TKO 5-speed if you prefer that route. Or you might consider the Muncie M22/M20 for a 4-speed. But if you don't...
  11. Vipersix

    Stock Truck 351w block safe at 500HP?

    I'm using a '78 block out of a truck and am throwing somewhere in the range of 700 horses with no problems. I'd recommend the use of a main girdle though.
  12. Vipersix

    Spinning pushrods

    Any time you change the rockers or heads you can assume you'll need to change rods as well. I would recommend you invest in a pushrod length checker. And as you hinted at, the length needs to be checked with lifters other than hydraulic due to the lack of pressure.
  13. Vipersix

    fuel pressure question

    No, you'll want to set the base pressure with the vacuum line disconnected. The purpose of a regulator is to adjust the fuel pressure with changes in atmospheric pressure and engine airflow in order to maintain a constant pressure at the injectors. How old is your regulator? Most of the...
  14. Vipersix

    fuel pressure question

    How long have you been doing this? You run a good possibility of causing lean conditions in your chambers. While this will yield a performance increase in the short term, it wreaks havoc on your internals if you get excessive. noslow1986, unless your pump is taking a **** on you, the most...
  15. Vipersix

    wolfe craft roll cages

    I would recommend you let the guy who welds it in place do all of the necessary cutting and notching.
  16. Vipersix

    wolfe craft roll cages

    Chassisworks (Chris Alston's Chassisworks, Inc.) has some of the best cages that I've ever seen, but then I suppose I'm biased. I don't believe they have hold and weld packages but it would probably be worth a look. Or simply give them a jingle.
  17. Vipersix

    wolfe craft roll cages

    I would recommend Chris Alston's Chassisworks. Fits beautifully and they have amazing tech support.
  18. Vipersix

    Spark plug tricks?

    IMO... I would place more emphasis on determining the correct plug and gap than attempting to index your plugs. The rate of return for a properly indexed set of plugs is likely to be in the range of 1 - 2% which is essentially worthless unless you're a competition racer and need the extra .01...
  19. Vipersix

    Which type/size headers do I need?

    Sorry, I have to do it... :dead: I think I understand where we are disagreeing and I believe it has more to do with internal combustion theory than anything else. You mention that the cam guy (never heard of this Jay character, but there are certainly numerous borderline-genius guys out...
  20. Vipersix

    Which type/size headers do I need?

    I always hate sidetracking on other people's threads, but here goes anyway! This is the same guy I am referring to. He sits in a factory and dreams up cam grinds based on popular and/or average parts on the market. In addition, he is able to grind a cam based on the parts on your...
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