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Class 7200 Engines

Discussion in 'Shop - Engine' started by Victor, Dec 2, 2011.

  1. Victor

    Victor New Member

    Joined:
    Feb 22, 2005
    Location:
    Woodland Park, CO.
    Anybody building a class 7200 with the new Mustang motor? I know its not a Busch motor but its an alternative.
     
  2. idealer

    idealer Active Member

    Joined:
    Jul 22, 2007
    Location:
    Costa Mesa, CA
    I have a odd fire motor I am very motivated to sell (Fresh) shameless plug :)
     
  3. Victor

    Victor New Member

    Joined:
    Feb 22, 2005
    Location:
    Woodland Park, CO.
    PM Sent
     
  4. dezerts10

    dezerts10 BANG!! BANG!!

    Joined:
    Jan 23, 2002
    Location:
    Temecula, Ca
    Juan co Aka fiberwerx and Jerry lierimore put one in his class 6 for the Baja 1000
     
  5. Jerry

    Jerry Active Member

    Joined:
    Sep 5, 2005
    Location:
    Temecula CA
    Under drive is what is important in this equation. The 3.7 is great and revs to the moon in stock form but the under drive is the mojo! The 2 together will kill the 4.5. 250 hp to the wheels with 37's th400 and Dana 60. 4.5 cost as much as the under drive and 3.7 per year to maintain.
     
  6. bigtex

    bigtex Active Member

    Joined:
    Aug 19, 2009
    Location:
    Escondido. ca.
    I do not think you make these claims until you prove it......How does 250hp beat 500hp? unless the 500hp breaks but like you proved at the 1000, it's not always the engine that breaks.
     
  7. Travisfab

    Travisfab Active Member

    Joined:
    Jun 3, 2003
    Location:
    San Diego
    4.5's put down 500 to the wheels?
     
  8. solo6

    solo6 Member

    Joined:
    Mar 3, 2010
    Location:
    Arizona
    I think the under drive is the way to go but I think you still need a race motor. 250 or 500hp race motor with racing internal parts. I think the Backus team were using the punched out stock motor and I thought they didnt hold up. Dont quote me on that. The 4.5's are just very good race engines with the best parts that have been holding up so far. Everytime I try to save money it cost double to do it right the second time.
     
    (+1) 1 person likes this.
  9. Victor

    Victor New Member

    Joined:
    Feb 22, 2005
    Location:
    Woodland Park, CO.
    Anybody ahve any experience with the 3.6 LY7 out of a Cadilac? Its puts out about 260hp stock
     
  10. baja619

    baja619 Well-Known Member

    Joined:
    Aug 7, 2004
    Location:
    Corona / San Diego
    Short star motors are used in sand cars all the time.
     
  11. ProfessionalPitMan

    ProfessionalPitMan Active Member

    Joined:
    Mar 31, 2008
    Location:
    Austin, TX
    You said it correct. Race engines. If we were talking anything other than racing, I understand talking about the cost of the 4.5 (which should be b.i.t.d class champion and runner up motor of choice for the third year in a row in the next 30 minutes). The 4.5 is still the best choice.

    Sent from my DROID BIONIC using Tapatalk
     
  12. mexracer10

    mexracer10 Well-Known Member

    Joined:
    Feb 12, 2004
    Location:
    san diego Ca
    I believe that soon we will begin to see a development of new engines being converted to race engine such as the camero direct injection engines, its about time new tech made its way into the v6 world, just like the ls engines did for v8's.
     
  13. GRENADE

    GRENADE Member

    Joined:
    Jun 25, 2006
    Location:
    lake havasu city, az.
    Al Hogan just won the race and the 7200 championship with a 4.5 that we build for him !!!!!!!!
     
  14. Jerry

    Jerry Active Member

    Joined:
    Sep 5, 2005
    Location:
    Temecula CA
    250 hp was to the wheels which is less than my v8 at 220.
     
  15. Jerry

    Jerry Active Member

    Joined:
    Sep 5, 2005
    Location:
    Temecula CA
    How much is it to maintain in a year? 5k 10k or more if it doesn't explode? Rode in truck with 4.5 and while they are fast I don't believe they have staying power now that we have under drives. Further my 3.7 is stock and we run Pemex in it. Just the fuel cost for one race is huge.
     
  16. Jerry

    Jerry Active Member

    Joined:
    Sep 5, 2005
    Location:
    Temecula CA
    That was one of the engines we talked about. We chose ford for the money they offer for winning.
     
  17. GRENADE

    GRENADE Member

    Joined:
    Jun 25, 2006
    Location:
    lake havasu city, az.
    We try to freshen engine's every 1500 miles.
     
  18. racer56

    racer56 Well-Known Member

    Joined:
    Sep 10, 2007
    Location:
    Encino, Ca
    The only advantage of the "new tech" LS engines have over a small block is cost.
     
  19. GRENADE

    GRENADE Member

    Joined:
    Jun 25, 2006
    Location:
    lake havasu city, az.
    we try to freshen engine every 1500 miles
     
  20. mexracer10

    mexracer10 Well-Known Member

    Joined:
    Feb 12, 2004
    Location:
    san diego Ca
    I still love the small blocks, but weight and in stock form the ls engines offer a lot more for race cars and availability is much greater. In the v6 world there has always been a lack of options when it came to engines and parts, even the 4.5 engines are old rare and expensive, hence why its time for the new stuff to begin to take over. Each have an awesome platform to start with toyota 4.0, chevy 3.6, and the ford 3.7.
     

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