[TPR] Hydraulic Roller cam thoughts

[David in Durango]

Aaaaaaaarrrrrrggghhhhhhhhhhha.  Don't want to hear all these stories about special bushings and such.

Maybe I'll stick with solid rollers - the hydraulics are about $400 more.  then I'll need different pushrods?  It never ends.

BTW, Dan told me the 180s don't give any more power.  I AM aware of the pornographic powers they have . . . . .
  ----- Original Message ----- 
  From: Kirby Schrader 
  To: Asa Jay Laughton 
  Cc: tpr at teampanteraracing.com 
  Sent: Thursday, March 29, 2012 2:39 PM
  Subject: Re: [TPR] Hydraulic Roller cam thoughts


  I just went through this, but Dan is certainly more of an expert than I.


  When I got my Pantera back in 2009, the all iron 377 Cleveland had a hydraulic roller in it. Decent 470 HP and 448 TQ.
  Trouble is, I was so used to the old flat tappet solid lifter cam that my brain kept trying to wind it to 7000rpm and then hitting the rev limiter. I wanted it to keep pulling.
  6200 was about all it was good for with the hydraulic rollers....


   I had to pull the engine for repair last year (long story, don't ask, please) and decided I liked the rpm too much, so I went with some Comp Cams solid rollers. They left less than .050" covering the oil galley holes, so I had to get the lifter bores bushed. This is expensive, but good because it allows you to put smaller oiling holes in the bushings. That way, if you do lose a lifter, you don't lose the engine.


  I have rebuilt the previous engine (my son is going to use it in his Pantera) and did a completely new engine for my car.
  After lots of drama and hassle it is running now, but I'm still fine tuning the EFI. It's nice and strong though. We'll see how it goes.... Desktop Dyno says it should do 560HP and that's not bad for an all iron Clevleand, I think.


  I am running into the exhaust restriction now with the stock GTS mufflers and the better cam and stuff, so a set of 180's is on order.


  It never ends....


  Bottom line: You can get lifters which WILL work in the stock Cleveland block bores, but you need to check closely.
  And... you may need to bush them.


  FWIW,
  Kirby



  On Thu, Mar 29, 2012 at 14:41, Asa Jay Laughton <asajay at asajay.com> wrote:

    The next build I do will most likely use a mechanical roller, though a
    hydraulic isn't out of the question.

    The last build I did used an off-the-shelf Crane hydraulic roller for
    a 351C.  I think it was one of the first.  I love it actually, being
    the first one I've ever tried.  It's not very radical though and I'd
    go for more rumpety the next time.

    Dan Jones has some great information regarding hydraulic rollers for
    Clevelands.  Best to give him a shout.  I might be able to dig up his
    emails on it (I tend to keep nearly everything he writes) but it could
    be like a doomed Antarctic expedition.  Pay special attention to the
    lifters.  Some Hydraulic roller lifters for the Cleveland are NOT
    good.  Oil hole is too high and will clear the top of the lifter bore.
     I don't think I'd even talk to a vendor until -after- I talked with
    Dan.

    Either way... mechanical or hydraulic, I think you'll love the roller.
    Asa Jay
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