Comp Cams 268H cam

Discussion in 'Engine Topic' started by StudDawg380, May 6, 2005.

  1. StudDawg380

    StudDawg380 Veteran Member

    927
    0
    May 4, 2003
    Everett, WA
    I have this 268H in my 355 and heard it will have a fairly choppy idle. Compression will be low...about 8.5:1 - ish (for now). Anyone have clues as to what it might sound like?

    Just curious.

    I love this site.
     
  2. 73454

    73454 Guest

    A 268 won't sound very rough at all unless you have headers and an exhaust system. I have a split pattern 272 duration cam and it idles almost like a stocker in my truck. I've got a stock exhaust on it, and the thing purrs at idle.
     
  3. D Stroud

    D Stroud Veteran Member

    I'm runnin the 268H in my 355 in the Z28 and it has a very nice sound.

    I'm runnin factory manifolds and exhaust but with Vortec heads and 10.3:1 comp ratio.

    I definatly has a rumpity idle.
     
  4. StudDawg380

    StudDawg380 Veteran Member

    927
    0
    May 4, 2003
    Everett, WA
    Oh I guess I didn't think of mentioning that it will have full-length Flowtech headers. As for the exhaust system...well...your guess is as good as mine - and I'm open to opinions.

    I've been eyeing the Pypes 2.5" x-pipe system and transverse system that they have going on, and have heard good things about the American Thunder system. (I AM looking for 2.5"...does Summit carry 2.5" systems?)
     
  5. StudDawg380

    StudDawg380 Veteran Member

    927
    0
    May 4, 2003
    Everett, WA
    Heh heh..."rumpity." ::grin::
     
  6. 79ZED

    79ZED Veteran Member

    3,008
    1
    Jan 31, 2000
    Nanaimo, B.C., Canada
    I have it in my old 350 Z28 engine. Other than headers, dual exhaust, and ignition and carb tweaks, the engine was stock. The cam definitely has a louder,noticeable sound with a slight lope compared to stock.

    John
     
  7. MulletMan1980

    MulletMan1980 Veteran Member

    3,246
    0
    Jul 2, 2004
    Wa, USA
    I believe when my engine was built I had a 268 or similar crane grind. I have headers and 2 1/2" on my 79 and it doesnt have much of a lope. My old summit cam was like 224 @.50 and it loped way more with my old engine. Infact my 79 with 268 sounds like my 80 with 305 with headers and duals.
     
  8. StudDawg380

    StudDawg380 Veteran Member

    927
    0
    May 4, 2003
    Everett, WA
    OK thanks guys, just wanted to know what to expect.
     
  9. 3origZlovers

    3origZlovers Veteran Member Lifetime Gold Member

    1,658
    0
    Dec 25, 2004
    Springfield,MO. USA
    SD380, I'm also using a 268 (extreme energy)
    When you get it fired up, let us know what it sounds like. I've been told it has a rumpity rumpity grin. I've a little to do b4 mine will be ready to put in my 78Z

    Fixin' a 77Z,78Z and arguing with my 80Z.Some yayhu has a set of lug nuts on the front that nothing fits. (see my article under wheels, tires section)
     
  10. StudDawg380

    StudDawg380 Veteran Member

    927
    0
    May 4, 2003
    Everett, WA
    Yeah, mine will be at LEAST a month.
     

Share This Page