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Cams: Comp 268?

Discussion in '1973-1991 K5 Blazer | Truck | Suburban' started by RedDwarf, Jan 21, 2002.

  1. RedDwarf

    RedDwarf 1/2 ton status

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    Anybody running the Comp Hi Energy 268H in a 350?

    How's the idle? I'm looking for a little lope.

    Also wondering how it works with the stock stall convertor. I know they say it works with stock convertor, but mine stalls pretty low.....
     
  2. zakk

    zakk 1/2 ton status

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    i ran one in a LT-1 short-block in my 67 camaro (*sob* i still regret selling it *sob*) nice idle, not obnoxious, good mid range power. that was a LOOOONG time ago. IIRC, comp cams was having trouble the last few years with thier lobe hardness(?) no experience, just what i heard around the campfire...

    Hope this helps...

    -zakk

    '77 1-Ton K5
    World's Ugliest Lawn Ornament
    [​IMG] CK5's Moab 2002 or Bust!! [​IMG]
     
  3. slider

    slider 1/2 ton status

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    That is a pretty big cam for a 350, If your running 194 valves stock heads it will have a hard time breathing. I had 194 heads on a 383 with a 268 comp cam. It ran great on low end but seemed to run out of air about 3800-4000 rpm. I put a set of World S/R torquer heads, they are ported and gasket matched I bet I gained 75 or more h.p. It pulls hard up to red line. The 268 is a great cam for lumpy idle, but might be too big for what you need. Contact Comp. Cams and they will help you get the best cam for your engine. I run an Allison full welded torque converter in my turbo 350 so it is not a stocker, can't help you there.
     
  4. CaptCrunch

    CaptCrunch 1/2 ton status

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    A 268 is as big as I would go for an offroad truck. Want a decent idle there. I have liked the ones I have installed. You may want to look into a different line though... the extreme 4x4 line up typically has a a little better idle with similar power upstairs. Slider nailed the application deal right on the money.

    -Mikey
    1987 Chevy K5 Blazer- 350 TBI
    <a target="_blank" href=http://coloradok5.com/gallery/captcrunch>http://coloradok5.com/gallery/captcrunch</a>
     
  5. CaptCrunch

    CaptCrunch 1/2 ton status

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    Alright! More people aboard the world products wagon! It is about time people say the potential of the SR's and the Sportsman II's. About 3 or so years ago I built up a budget street screamer and used SR's... did a lot of port work on them and thought it was an all out awsome daily ride for the cash. I think the vortecs are the bang for the buck head of today, but yeah those heads have huge potential!

    -Mikey
    1987 Chevy K5 Blazer- 350 TBI
    <a target="_blank" href=http://coloradok5.com/gallery/captcrunch>http://coloradok5.com/gallery/captcrunch</a>
     
  6. txbartman

    txbartman 1/2 ton status

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    That's a pretty hefty cam. I looked at it and some others. I also talked to several people on here before settling on the Extreme 4x4 235 cam (12-235-2). It has better heft than the stock or the Edelbrock cam matched to my Performer intake. Since my engine hasn't yet fired, I can't tell you how it performs. But, the testimonials I got when deciding sounded good.

    Brian
    Check out <a target="_blank" href=http://tx85gmcguy.alloffroad.com>My Jimmy</a> with all her projects!
     
  7. Mr GearHead

    Mr GearHead Registered Member

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    I have had this cam in my 400 for about 6 years and I also have a set of S/R torker heads. It has been very good with a slightly lopy idle; however, I think that it is as big as I would go. Next time I woudl get a slightly smaller cam. In a 350 the cam might be to big. I would look at the Extreme 4x4 cams.
     
  8. thatK30guy

    thatK30guy 1 ton status Premium Member

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    My '85 K30 has the 260 Comp Cam in the 454. It's good for pulling and has good torque. Gas mileage sucks though. [​IMG]



    <font color=red>Only real men drive K30's!!!</font color=red> [​IMG]

    <a target="_blank" href=http://coloradok5.com/gallery/thatK30guy>The K30 Collection</a>
     
  9. thatK30guy

    thatK30guy 1 ton status Premium Member

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    Mikey, I'm all aboard the World Products wagon, too!! Just don't have the heads yet. [​IMG]

    I gotta laugh at all you small block guys. I'm wanting to get some of the Merlin heads!! [​IMG] [​IMG]



    <font color=red>Only real men drive K30's!!!</font color=red> [​IMG]

    <a target="_blank" href=http://coloradok5.com/gallery/thatK30guy>The K30 Collection</a>
     
  10. RedDwarf

    RedDwarf 1/2 ton status

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    Worlds are okay I guess. Wish I had the money for AFR's though. No question there [​IMG]
     
  11. Blazer_Boy

    Blazer_Boy 1/2 ton status

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    You're putting in a 235 too? I have about 2 weeks before I'll fire the motor up. I've got my block at the machine shop at the current moment. From what I've heard, its supposed to have good manners, but give a little lump in the idle [​IMG]. The 235 actually pulled more vacuum than the smaller 231 for my setup (according to the computer).

    <a target="_blank" href=http://www.geocities.com/bigkern76>The Blazer Boy Page</a>
     

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