Dismiss Notice

Welcome To CK5!

Registering is free and easy! Hope to see you on the forums soon.

Score a FREE t-shirt and membership sticker when you sign up for a Premium Membership and choose the recurring plan.

Intake and cam choices????

Discussion in 'The Garage' started by BlackDog714, Oct 31, 2002.

  1. BlackDog714

    BlackDog714 1/2 ton status

    Joined:
    Jun 8, 2002
    Posts:
    260
    Likes Received:
    0
    Location:
    Indiana
    OK, I am swapping in a 1975 2wd Surburban 454 in my 1 ton soon, very soon.
    Its got the stock intake and cam, but it only has 78,000 original miles on it and runs great!
    I am thinking of changing the intake to an aluminum one and swap the cam before it gets dropped in.

    Heres the situation... I called Jeg's and Summit and they automaticly say I need the most expensive intake and agressive cam. Well I dont know, so I am asking you.

    I have a newly rebuilt Quadrajet 825 and a running Holley 750 double pumper in the Surburban right now (need to pick one of the those too! /forums/images/graemlins/smile.gif ) I also have DynoMax coated headers and a nice dual exhaust. So, should I swap cams on a running engine? If so, which cam? Which manifold should I get?

    Thanks for your opinions,

    BlackDog
     
  2. ben427

    ben427 1/2 ton status

    Joined:
    Mar 10, 2002
    Posts:
    1,123
    Likes Received:
    0
    Location:
    Waverley, Nova Scotia
    Edlebrock performer intake, qjet, and a mild cam, under 220 degrees duration @ .050 lift. and somewhere around .490 or .500 lift is usually a good combination for low end power.
     
  3. BlackDog714

    BlackDog714 1/2 ton status

    Joined:
    Jun 8, 2002
    Posts:
    260
    Likes Received:
    0
    Location:
    Indiana
    Does the Edelbrock RPM cam fall into those stats? Sorry, as I have no idea what those mean in reality.
     
  4. ben427

    ben427 1/2 ton status

    Joined:
    Mar 10, 2002
    Posts:
    1,123
    Likes Received:
    0
    Location:
    Waverley, Nova Scotia
    The RPM is a lot higher revving, its about .550 lift and 245 degrees duration @.050 lift. A plain performer plus cam would be better for your truck.
     
  5. zakk

    zakk 1/2 ton status

    Joined:
    Sep 21, 2001
    Posts:
    4,762
    Likes Received:
    0
    Location:
    San Jose CA
    i wouldn't screw with it to be honest.

    If the thing is running great, there is no reason to screw with it. Add a good dual-plane aluminum manifold (Edlebrock's Performer, Weiand's Stealth, Holley's *what ever they call it this month*) tune a good q-jet on it, make sure it has a good distributor on it to get good spark and go with it. Add your headers & free flow exhaust and you're set. and it saves you money

    BBC;s make enuff power for what we do in mild form. Doing cam swap's means making sure your old springs will work, new pushrods, new lifters, etc. When it goes old and tired, rip it down, and rebuild it. No reason to tear apart a well running engine. We don't drag race. Heep guys use 4 cylinders, and 'yota's do great with a v6. any BBC will make you into a hero.

    Just my .02

    [/flame suit on] /forums/images/graemlins/rotfl.gif
     
  6. zakk

    zakk 1/2 ton status

    Joined:
    Sep 21, 2001
    Posts:
    4,762
    Likes Received:
    0
    Location:
    San Jose CA
    AND FILL OUT YOUR PROFILE!!!
     
  7. Z3PR

    Z3PR Banned

    Joined:
    Mar 30, 2002
    Posts:
    19,217
    Likes Received:
    0
    Location:
    Everywhere
    I would use the Weiand's Stealth intake manifold. (I am not a fan of Edelcrap) As far as the cam go's, I'd consitter one of the Comp Cams Extream 4x4 cams. Use the Q-jet, or if ya wanta spend some money, go TPI !!!! /forums/images/graemlins/thumb.gif
     
  8. HarryH3

    HarryH3 1 ton status Author

    Joined:
    May 31, 2000
    Posts:
    10,384
    Likes Received:
    2
    Location:
    Georgetown, TX
    Since I'm from the "more is never quite enough" school of power, ( /forums/images/graemlins/wink.gif ) I would put a cam in it while it's out of the truck. Swapping a new cam into a 454 is a very easy job, especially since you plan to already have the intake off anyway. /forums/images/graemlins/cool.gif I picked up a Comp Cams cam and lifter set from Summit Racing for mine for $165. /forums/images/graemlins/thumb.gif

    Most of Edelbrocks cams are designed for more mid-range and upper end power. They're awesome in a 3,500 lb. car, but usually aren't the hot ticket in a 6,000+ lb. truck. Give the tech folks at Crane Cams and/or Comp Cams a call and answer their questions honestly. They can then recommend the correct cam for your application. They have a much greater selection of cam grinds than Edelbrock offers.

    I'd look for an intake that makes most of its power in the 1,200-5,500 RPM range. An intake that makes power at any higher than that would be pretty much useless on a mostly stock big block.
     

Share This Page