Author Topic: Is there such a thing as TOO big?  (Read 3402 times)

Offline adams18

  • Newbie
  • Posts: 37
Is there such a thing as TOO big?
« on: February 02, 2011, 10:04:12 PM »
I have a Holley 650 Double Pumper on a Professional Products Hurricane intake manifold(3500-8000RPM range) on my 355 with stock heads. .454 lift and 268 duration cam. Is this intake too big?? Thanks

Offline adams18

  • Newbie
  • Posts: 37
Re: Is there such a thing as TOO big?
« Reply #1 on: February 02, 2011, 10:05:46 PM »
I've been told that this is just flat out a wrong setup. What do you guys think?

Offline Grim 82

  • Senior Member
  • ****
  • Posts: 1651
Re: Is there such a thing as TOO big?
« Reply #2 on: February 02, 2011, 10:19:23 PM »
I don't have much technical data to back up my thoughts on it, but I think if it's for anything short of an all out race machine I'd have to agree that it's not the right setup. A daily driver won't see the rpm range where that intake really shines, so it's not doing you any favors. I would expect more torque and low rpm throttle response from a stock intake, or a simple dual plane like the Edelbrock EPS.
Give a man a gun, and he might rob a bank. Give a man a bank, and he might rob the world.

Offline topp

  • Frequent Member
  • **
  • Posts: 498
Re: Is there such a thing as TOO big?
« Reply #3 on: February 02, 2011, 10:27:38 PM »
Dual plane intakes are best for off idle to about 4500 rpm....
'90 Suburban TBI 350

Offline adams18

  • Newbie
  • Posts: 37
Re: Is there such a thing as TOO big?
« Reply #4 on: February 02, 2011, 10:29:38 PM »
That makes sense. The most I would ever want to turn this engine is 5200. and this intake is a single plane.
Would anyone like to trade a more moderate intake for my polished high rise??  :) :)

Offline beastie_3

  • Senior Member
  • ****
  • Posts: 3170
  • Josh
    • My truck pics
Re: Is there such a thing as TOO big?
« Reply #5 on: February 02, 2011, 10:39:29 PM »
Key word: stock heads

Offline adams18

  • Newbie
  • Posts: 37
Re: Is there such a thing as TOO big?
« Reply #6 on: February 02, 2011, 10:45:30 PM »
They're 1.94s with a three angle valve job.. although I may be putting some 2.02 Vortecs on it. Still stock though..

Offline 1980c10

  • Senior Member
  • ****
  • Posts: 1205
Re: Is there such a thing as TOO big?
« Reply #7 on: February 02, 2011, 11:11:11 PM »
Look up the specs for rpm range on your intake and cam-they should match up. also if you are going with vortech heads you'll need an intake to match the heads as well.

Offline ohio hab

  • Newbie
  • Posts: 76
  • 1984 C-10, 383 SBC
Re: Is there such a thing as TOO big?
« Reply #8 on: February 03, 2011, 04:53:50 PM »
What is the number of the casting's of the cylinder heads? Beastie 3 make's a valid point. Is the truck an automatic or stick? Need more info, for a better answer. If the truck is basically stock, axle ratio, no convertor change, headers, free flowing exhaust, etc.. then yes 650 d.p. too big. Dual plane, more low end, single plane more for top end. Your combo might be able to be tweaked, just need more information on your setup.

Offline Psycho71

  • Registered Users
  • *
  • Posts: 239
Re: Is there such a thing as TOO big?
« Reply #9 on: February 04, 2011, 09:07:48 AM »
I'm going to venture to say, you need to stay with a dual plane intake for that head, cam, and carb set-up. Even upgrading the heads fairly soon, that cam won't make use of that intake. You'll end up with a slug of a motor on the bottom end, which is not what I personally like in a heavy truck. Low to mid-range is where it's at for me. Performer RPM, or even the PP Typhoon, or something of the like will yield you much better, and driveable, results.
There are two tools needed, duct tape and WD40. If it moves and shouldn't, use the duct tape. If it doesn't move and should, use the WD 40.

Offline bobcooter

  • Junior Member
  • ***
  • Posts: 788
  • 1979 Scottsdale C-20
Re: Is there such a thing as TOO big?
« Reply #10 on: February 04, 2011, 09:29:20 AM »
Just a rule of thumb. If you see an intake mainifold with a giant square hole in the center, it's too big to drive on the street and do any good. It's made for flat out racing.
'79 C-20, 350/400, 3:73 gears, 9 leafs and a headache rack
Favorite Quote, "Good judgement comes from experience. Experience comes from poor judgement."

Offline three8six

  • Frequent Member
  • **
  • Posts: 486
Re: Is there such a thing as TOO big?
« Reply #11 on: February 04, 2011, 10:31:56 AM »
 I would say don't use that intake with that setup.