Pro Mod VS AFC engine

Discussion in 'PSI Superchargers Tech Questions' started by sammy, Apr 23, 2007.

  1. sammy

    sammy New Member

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    I'm looking to compare these 2 engine , and it seems for me that the pro-mod engine produce more HP than the (ihra)funny car engine. Last IHRA national in April : the 3 leading AFC in qualifying ran : 5,80 to 5,86 sec 240-245 mph
    leading 3 pro-mods ran: 5.99 to 6.03 sec 237 mph
    Pro-mods cars 500 lbs heavier , only 20 % overdrive !!!!
    If i use the rule : 100 lbs = .100 sec. it should be .50 sec slower for PM
    and what about 20 % over compared to 50% + for AFC
    Can somebody explain to me why the ET & MPH are so close ?
    Thanks
    Sammy
     
    #1
    sammy, Apr 23, 2007
  2. bruce mullins

    bruce mullins Top Dragster

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    i agree with you. years ago i said that when the #1 qualifier in pro mod is quick enuff to get in the funny car field , the class is in trouble. ....
     
    #2
    bruce mullins, Apr 23, 2007
  3. aj481x

    aj481x Member

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    The P/M guys have been forced by restrictive rule changes to continue to develop new stuff. Many teams have their own dyno's, fuel pump stands, etc. The improvements in the blowers has been amazing, but at a very high cost. The AFC racers have been faced with a situation where they wern't even sure they would have a class until just before the season started. The IHRA funny car guys are just as capable, but it would be hard, in my opinion, to make a big investment at this time.
     
    #3
    aj481x, Apr 23, 2007
  4. john348

    john348 Top Alcohol

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    And to this day no sponser has been named :confused:
    How do you plan for it's future
     
    #4
    john348, Apr 23, 2007
  5. wildride boy

    wildride boy Top Sportsman Racer

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    The modifications made to the blower of a pro-mod car to increase boost at lower overdrive , are they accepted in AFC ? What should be the result with a blower like that with higher overdrive ? Or better , is it legal to use a top notch pro-mod engine in a AFC ?
    Thanks
    Claude
     
    #5
    wildride boy, Apr 23, 2007
  6. Alkydrag

    Alkydrag Sr. Dragster

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    Not to sound derogatory, and please don't anybody take this the wrong way. I've been to a few IHRA races and from what I see, the fuel systems are the main deficiency in the AFC's. The Pro Mod guys spend more money on there fuel systems and have learned how to plumb them correctly and seem to be better tuners. There are a couple of AFC's cars running pretty good and there fuel systems are plumbed right. I worked on one AFC in particular and I couldn't believe the mess he had for a fuel system.
     
    #6
    Alkydrag, Apr 23, 2007

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