Manifold Spacer?

[mrselfdestruct]

Found this (http://www.wynjammer.com/ALM1115/Manifold_Spacer.html) on the Wynjammer website. ????? Is this like those throttle body spacers, being that it doesn't really do much? Or is it a proven method?

[JROD©™®]

looks interesting...horrible webpage though... if i hadn't already spent my money for the month i'd get one..since i got a leak to fix anyway..i'd be the test subject. didn't find much on the web except for some other guy asking if its BS like the TB spacer...kinda looks like a really big TB spacer...wonder if it hisses...21hp and 21ft lbs...even half that would be decent for $265

[mrselfdestruct]

yeah thats what i was thinking... i guess for one, its different than a TB spacer for 96+ because it spaces the whole thing, not just the TB.. but as to how gains are achieved, I dunno. I'd call Al for a detailed explanation but the whole Iraq thing just makes it kinda hard..

[T Man]

There has already been a thread about this. Im gonna keep looking for you guys, OBI, help me out.

[JROD©™®]

rather than search for the thread and link us to it...recollect the jist of it and tell us...

or not..i mean either way...haha...

[JROD©™®]

obi wan on manifold spacers ::

I have a major problem with the ideal of this spacer.

Anyone want to tell me why our intake falls flat on its face around 4400 rpms?

What I have been told, theorized and everything else is this.

The LARGE plenum we currently have was so when you tipped in on the throttle the motor had plenty of air within the plenum to get going as it built reserves up and got flow moving. This is why the 4.3 is so torquey to begin with.
As rpm increase the air speed also increases. This increase of useage and speed within a large plenum such as ours then begins to empty out faster than it can be refilled. Pressure drops and then the air begins to slam the plenum floor and begin and uproll youve seen on TV's when they show aircraft taking off etc. The air swirls upwards and curls in creating a turbulance. Then with each cylinder commanding air it begins to try to tornado it in movement. Massive turbulence to the point that the cylinders begin to run out of air cause it must fight this to gain air. Also the floor of the plenum is lower than the runner which creates its own nature of problems.If you look at never intake and or the old TPI ones, you'll notice the plenum is smaller for one and also the way the runners run off of them. The runners are very close to the size of the plenum in diameter. The throttle body is faced forward and the plenum does not extend beyond the last runner. Tis whole fashion of make and forward movement fills the plenum from rear to front and also alot have a air foil within the opening to direct the air towards each bank.
Larger plenum would do what?? It may slow the slamming effect, but how much or if at all? Also going on why plenums are created large, it would aid bottom end more than top end. Where does the 18 h.p. come from??? Why doesnt a 1 inch spacer then show more promise under the throttle body then it does and we've seen. After all its enlarging the plenum volume as this would! Even go look at intakes available on older motors! Does any of them run such large plenums or are they nearer the size of a carb or TBI unit? WHY?

Now what I would like to see done is the idea I have stuck in my head. This spacer has been out now for about 2 months and Ive looked it over time and time again and shared and ideal with one person, HUH SUPERCHARGED! Why not use this spacer reworked to solve some of the problems I and other inherently believe as our #1 culprit in higher rpms. Machine a new one with the outter rim where our plenum mounts to the same one inch. The center near the throttle body could rise 2 or so inches. Then from this 2 or so point, split the center into a ^ like a slide to ramp the air toward each bank!!


manifold spacers thread (http://www.sicgmtrucks.com/forum/showthread.php?t=1738&highlight=manifold+spacer)

[T Man]

That was it!! Thanks J Rod

[JROD©™®]

no prob man. i would like one..but there again lays the problem with K&N and there not being enough clearance...its time for a custom hood...

[biglouie_underpressure]

on a n/a motor it adds like 10rwhp i have the dyno sheet some place

[JROD©™®]

thats not bad at all...i'm n/a...damn clearance issues...

[bvr775]

it's 325buxs... from the companey.

I know for sure it works on the fullsize w/ 4.3 cause I talked my buddy into buying one and putting it on his truck so "I" could try it out