sorry guys last camshaft question...

Discussion in 'Classic Mustang Specific Tech' started by 1973mach1, Dec 12, 2003.

  1. Specifications:
    * Advertised duration: 270 intake/270 exhaust
    * Duration at .050 in. cam lift: 224 intake/224 exhaust
    * Gross valve lift: .519 in. intake/.519 in. exhaust
    * Lobe separation: 110 degrees
    * RPM range: 1,800 to 5,800
    * Mild rough

    Is this too wild for the stock 351c 2v with stock springs and FMX tranny with stock stall?

    Thanks,
    Jim
     
  2. make sure you change out your springs with your new cam.. that one would sound lumpy... the Clevelands respond nicely to a split duration, favoring the exhaust..
     
  3. I just looked up the stock spring specs on the 2bbl Cleveland and they're a little weak for that kind of cam, even when new, yours aren't I'm sure. Better upgrade your springs. Get a spark plug adapter to connect an air hose and a spring compressor and change the springs without pulling the heads. Do this AFTER the cam break-in though. Those old weak 2 bbl springs will be easier on the cam during break-in.
     
  4. Is it tough to change the valve springs without taking the heads off for a beginner? Whats the air hose do? I do have a valve spring compressor and air hose.

    Thanks
    Jim
     
  5. The air hose pressurizes the combustion chamber so that the valve doesnt fall when you remove the springs.
     
  6. It's not a difficult or complicated job, even for a beginner. Go to your favorite local auto machinst and ask them to show you how to install the locks and retainers, so you'll at least know how to do it right. It'll take a couple extra hours at the longest to swap the springs in addition to the cam.
     
  7. might want to hook up a regulator to your spark plug adapter, when I changed my springs anything over 30 psi wanted to turn the motor over.
     
  8. you guys think a garage would kill me in price if I took it to them to change the springs without pulling the heads?

    Thanks,
    Jim
     
  9. Yes, they would. They'd end up pulling the heads, after "accidentally" dropping a valve. :rlaugh: :rlaugh: or more likely two valves :rlaugh: one from each head :lol: :lol: