when you say stage 1 and 2, do you mean the kegger ported? cause i think hughes has a single plane intake like the M1.... which you would be better off getting the M1...

otherwise get the stage 2 ported kegger.

 

If u have the ability to do so, buy a stock manifold and do the kegger mod yourself and save a couple hundred bucks.

 

The m1 is not an option for me, I have a 92. The hughes manifold is a stock, ported and modified unit (beer barrel)

 

The '92 was the first year for the magnum engine. It's quite diferent from the '91 and earlier engines. Same basic design but heavily modified. Not much will interchange with earlier engines. However, it's was unchanged for several years afterward.

 

A M1 would work for your truck, still, do what I said previously

 

soooo... why cant you use an M1?? im pretty sure they make one for the LA motor...

 

This is posted under the 4cyl/v6 forum, assuming he has a V6 then his only option is basically a modded kegger. Save your self the money and do the work your self a stage 1 isn't that modified of a manifold.

 

The only thing I'm scared about is hogging it out too far. That's why I figured just buying a modified manifold would be my best bet. And as far as I know, a modified beer barrel is my only choice.

 

Its not verify difficult so long as your mechanically inclined and have a die grinder and or a Dremell . What sort of power do you want? If you want more low end grunt then stock is going to likely be your best bet, but you could still gasket match he runners to the heads. If you want higher end horse power you'd want to remove anywhere from 2-4" from the runner length. Some manifolds have a divider in the middle as well, usually the divider is removed, not sure what benefit that does personally, i chose to leave mine. You can also increase upper end flow by decreasing the plenum volume, i think Hugues uses a sort of epoxy to do this.

The stock manifolds are pretty easy to modify and there should be several existing writeups on these forms on how to do it, its the same for a V8 as a V6 is just minus 2 cylinders. Unless you have additional supporting mods I bet just removing about 2" and gasket matching your runners to the heads as well as opening the TB bores would give you a great boost.

 

i have a k&n filter in the stock hat with the flap removed by the grill, #19 fms injectors, fastman throttle body, and all the little mods done.

 

Do you have Harland Sharp 1.7 roller rockers? these were the best performance mod i did to mine.

 

im debating between the manifold and those

 

I'd recommend the roller rockers. i think i got mine for 200 bucks and the install was simple. You will not be disappointed in the gains. below is a link to installation instructions.

http://www.pavementsucks.com/tech-article-32.html

 

where did you get yours from?

 

were they pretty easy to install? what addition parts ( guides, pushrods) were needed?

 

no additional parts are required. the install was simple. just follow the guide from pavementsucks.

 

So I've been doing some research about the intake manifold mod and I don't fully understand some of it. Eliminating the divider? How much to take off the runners? Filling in with aluminium and plastic?? Boring out injector bosses? I get how to gasket match it to the heads and throttle body bores but what about all that other stuff? Help please!

 

Some intakes have a divider in the middle. I believe these are the EGR manifolds.

Here is a picture of mine which has the divider.

Usually I see people remove about 2" up to 4" of length off the runners. The more length you take off the higher in up in the rpms your power goes, my truck made peak WHP at 5300 RPM and peak torque at 3200 RPM, I believe factory figures would be about 1000 rpms lower on both those for peak.

Here is my manifold after i did mine

I took off I believe maybe 2" but I chose to angle the cuts, no numbers to back it up but I felt at the time that angling them would also help allow air to make its way from the throttle body to the runner easier at WOT, that was my preference. I also chose to leave my divider in. As far as the injector ports, I believe some people do a sort of tear drop porting to it rather than the sharp machine cut in the runner, presumably so it doesn't effect the air flow as much.

 

Thanx for the info. I really appreciate it. I'm thinking ill gasket match the ports to the heads and tb, and take 2" off the runners. Im still in the dark as to what to do with the divider. I want to add the most power without losing any bottom end. And ill probably just leave the injector bosses alone.

 

I want to add the most power without losing any bottom end.

Hate to say it but that's not going to happen, if you do not want to lose any bottom end leave it stock. Basically everything you can do to gain more power with regards to the intake is going to move your power band higher and higher. You cant have both, at least not with modifying the intake that is.

 

on the hughes engines site the plenum repair kit says its for all 1993- 2003 v6s. why not the 1992 i think it would fit right?

 

I think if you have the Magnum redesign, it will fit. Try calling Hughs and ask their tech line. 1992 was the first year for the Magnum engines but some early vehicles might have had the older style engine. I went to a briefing at a tech session at a local Dodge dealer in late '91 when the Magnum engines were introduced to the mechanics for the '92 model year.

 

Wasnt 92 the bastard TBI magnum engine?

 

nope, MPI

 

 

:rotflmao: see who figures it out first....

 

Mopar 4bbl V6 Magnum M1

 

where did you get that?

 

It's a one off piece. Converted to EFI and some Wilson Manifolds stuff added to try and get the plenum volume up.

 

thats awesome. i bet those valve covers are custom fab'ed too.

 

I have one of those as well 2bbl carb manifold. Same part number but it doesnt have the MOPAR test next to the Chrysler logo. Mine has a heater port under the carb base, kinda odd since the production magnum heads have no ports to feed that with anything. I want to convert it to EFI and dyno it since i have never seen any results of one being used but after comparing it to production gaskets I am a bit concerned that the runner size is rather small, it would require alot of porting to gasket match it, i'm afraid the runner thickness isnt there to do so. then again it it may flow higher velocity? and is a very direct air flow path from TB into the intake so I am not sure... I want to get it flow tested vs the stock kegger before i do anything with mine.

 

The runner size was very small but there was enough material to open them up to gasket size via extrude hone (in the above intakes case atleast).

 

Has the that manifold actually been run? I swear i have only seen these pics of it, I am curious to know how it works. Mine is an earlier casting (presumably) so i dont think I have the room for much porting, though maybe i do, I'd really have to take a micrometer to the runner walls. But who knows maybe it flows better than a kegger even with smaller runners?