Performance enhancement advice

Discussion in 'Class C Motorhomes' started by dperkinstx, Feb 10, 2015.

  1. dperkinstx

    dperkinstx Junior Member

    I have a '94 Minnie Winnie Class C motorhome. The Ford 460 has an exhaust leak. I've learned this is a common issue.

    I decided to purchase a set of Thorley Tri-Y headers. The research I've done makes me believe I'll get a power gain, but not much for MPG.

    What else should I do for power and/or MPG improvements?
  2. krsmitty

    krsmitty Senior Member

    Exhaust is a good start. Some high-flow mufflers. Carb or Throttle body? An aftermarket cold air intake. New plugs, wires, tune up etc. It all depends on how much you want to spend.
  3. C Nash

    C Nash Senior Member

    Why more power Slow down and enjoy the ride. MPC drive 55, advoid jack rabbit starts and start your stop early and let the trans do the braking. All the above are good but with a carb you will need to monitor plugs to see if burning to rich or lean. Changing from factory specs can alter things that damage engines. Not against changing but just need to be careful.
  4. C Nash

    C Nash Senior Member

    Oh welcome to the forum dperkinstx.
  5. dperkinstx

    dperkinstx Junior Member

  6. H2H1

    H2H1 Senior Member

    I hate to be an old sour pus here, but when you own a Class A, B or C or any pull type, fuel economy is out the window. I can under stand getting what we can out of them, but to me it's a money pit. SAVE THE MONEY AND GO CAMPING MORE
  7. C Nash

    C Nash Senior Member

    Very few performance adds will actually pay for them in MPG IMO. Driving habits will affect MPG more than anything. I like high performance but always left this for race car. I have the V10 ford in our HR MH and have added nothing. If I had an exhaust manifold problem I would go wit a good set of headers. Never been in a hurry to get anywhere and love the sights getting there, but we are retired.
  8. mass59k

    mass59k Junior Member

    Fully agree with the others. ..get the headers fixed...other money invested usually doesn't pay off..enjoy the camping and remember to stop and smell the flowers
  9. LEN

    LEN Senior Member

    As others have said your pulling a brick down the road. Mileage is a dirty word. If you close to 8 MPG take it and run. With C's and A's if you get more great but most get around the 8 MPG mark. Some claim more but I question their math. Diesel is a different story I have seen a few in or near 12 MPG with the smaller motors and a few at the 10 MPG with medium sized motors and coaches and then to 7 MPG in the larger Coach's. With all this said a happy spot seems to be in the 60 MPH range in most all MH's 5ver's and C's.


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