ok im gonna do the plenum fix soon. I wanted to do the kegger mod but I wondered if anyone has one modded already for sale? I dont really know how to mod it just heard about it. What kind of differences can you expect after the kegger mod? What does it actually do? Thanks for any help.

 

Moves the power band up just a bit, makes for better air flow into the runners (unshrouds them, basically) Your engine breathes better, so, you get a bit more power.

Hughes Engines sells them, but, they run from 400 bucks and up. With a dremel, you can do it yourself in a few hours. There is a DIY available in the faq section. (I think)

I REALLY like the way my truck runs now..... Kegger mod, new timing chain and gears, good tune up. Like a whole new truck.

 

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Has this been proven on a dyno? I've heard about this mod but have yet to see any before and after results on HP/TQ increase.

 

the problem with before/after, and suspected gains, is that most folks do this mod in conjunction with repairing their plenum gasket I would wager.. the gain could be either or.. add to that, the kegger mod is a DIY, and most folks who would bother with a DIY wouldn't spend the $$ for two dyno's and a ton of work which would have to be done pretty much back to back in order to avoid suspect results.. All that, of course, is just my opinion..

I have a modded kegger w/ hughes plate I'll be selling sometime soon- if a buddy of mine doesn't want it, I'll post it on the forum.. I don't know what a JY sells them for, but the kit is $119- so my mark would likely be $150 for the entire thing.

 

Drew is correct. We don't have any members that did the kegger mod, that did NOT have a blown plenum, which prompted the intake yank in the first place.

My truck runs a HELL of a lot better now, than it did when I got it though. Just doing the intake made a noticeable difference, how much of that is attributable to the kegger mod? Couldn't tell ya. (I know the timing chain and gears ALSO made a VERY noticeable difference..... and that was only in conjunction with a water pump repair, so, THAT one, I KNOW did some major good.)

As for moving the power band, etc.... That is simple manifold design. Long runners such as found on our trucks, promote low end grunt, and then start losing the load beyond the mid RPM range. (GM TPI on camaros and firebirds used the exact same principles, and had the exact same problems. They just had their runners outside the plenum......) Have a look at various manifold designs, and pay careful attention to the RPM range they are designed to work in. You won't find any long runner designs that are any good much above 4500 RPM. Conversely, you won't find any single plane, short runner manifolds that do any good BELOW 2500 RPM or so. The range the manifold operates in is directly related to the length of the runners.

 

if you like to stomp on it at a dead stop when you can, single plane is no good then? or ill be the guy catching up real quick after a slow start? all of this plenum stuff is making me want to get mine don ebad, just sounds like a few cursewords and a splitting headache. Ive got a buddy to help though so, it will prob turn to be better. i can chirp and bur from a stomp with no braking or anything and it pulla very very strong until halfway into 3rd gear. aprox. um about 55-60 it slows down and 4th gear is where i will lose sometimes.. my gearing and trans also kills too. I know I keep asking about this but it seems so inevitable. And about 15 years late in my opinion.

 

Yeah, single plane manifold is no good for out-of-the-hole performance, but, once you get over about 2-2.5K RPM..... Hang on.

Now, using a single plane manifold..... and coupling that with a torque converter with a stall speed in the neighborhood of 22-2400 RPM........ Not a bad compromise.

Really depends on what you mostly use your truck for.

 

there was dyno #'s a few years ago's the #'s lost TQ but gain HP in the upper rpm range

and the #'s were not but bigg maybe like 3-4 on the lost tq and 7 on gained HP,,,, but dont hold me to those extect numbers

 

My truck has over 200k miles would the timing chain be a good thing to replace then to?