LiENUS

Are you running the stock TB? if not then theres your problem. Your IAC isn't setup properly youl'l need to close the throttle blades till they are just barely open at 0%tps then do something to insure the air from the IAC on the tb goes to the IAC passage on the manifold and only there.

T/A KID

iTrader: (12)

In my opinion air distribution is going to be somewhat tough on any intake manifold with a throttle body up front in which the air will always like to travel to the front 4 runners opposed to the back 4 runners. These cars are tuned from the factory to compensate for this but I see what your saying. An intake manifold like a Single plane or a Duel plane would be about the only intakes with a somewhat perfect air distribution.
I talked to wilson manifolds the other day and they gave me some pretty good info on what could be done on an LT1 car not wanting to spin crazy RPM. Take an LT1 Dual plane carb intake and get the center section notched out and add fuel injection bosses to the intake. This intake has been proven to make more hp and TQ throughout the curve and peak over the LT1 intake and most people say the carb manifold is not a Racing manifold???? Thats what gets me since it seems to better our factory peice????

otherwhitemeat

iTrader: (3)

No....its a mono blade

otherwhitemeat

iTrader: (3)

I talked to wilson manifolds the other day and they gave me some pretty good info on what could be done on an LT1 car not wanting to spin crazy RPM. Take an LT1 Dual plane carb intake and get the center section notched out and add fuel injection bosses to the intake. This intake has been proven to make more hp and TQ throughout the curve and peak over the LT1 intake and most people say the carb manifold is not a Racing manifold???? Thats what gets me since it seems to better our factory peice????[/QUOTE]

Ya that will be ok...in my case i do spin it to 8000rpm, but since it is force induction, even if i didn't spin it that high i don't think rpms would be a issue, but yes if it was a n/a motor that doesn't spin that high i think thats what i would do. Also i think eblrock make a intake like that ready to go...almost

T/A KID

iTrader: (12)

I'm Forced induction as well, I thought about going the Dual plane route and using a elbow with my monoblade but I will probably go with the Edelbrock version since I just sold my LT4 intake and I will be adding a Nitro dave monoblade p;ate (should look wicked)

LiENUS

Theres your problem
You need to fix the IAC passage issue

otherwhitemeat

iTrader: (3)

how would that change the air distribution to the back cylinders? i can control the idle just fine with my fast computer.

LiENUS

The IAC passages distribute air evenly to all cylinders at idle. So when you snap the throttle closed and its running rich the rear cylinders get the same amount of air as the front.

94strokedz

iTrader: (1)

Chevrolet put a composite on the factory voctec motors of the mid and late 90's, its very possible. I say run a "cinder block" single plane!!!!

camar0corey

iTrader: (22)

At least if I have a nitrous backfire down the road, my intake shouldn't become a expensive paperweight. I have no issues with my "cinder block".

I don't even remember it weighing too much when I had it off the car either, sure not as light as a composite, but oh well.

94strokedz

iTrader: (1)

Not too much there as far as weight savings. I'm guessing a few pounds at the most. A lot of people running composite intakes and spraying will install basically a pressure blowoff valve, designed to relieve the pressure during a nitrous backfire, rather than pressurizing the whole intake, which can get ugly!!

otherwhitemeat

iTrader: (3)

so what you are telling me is that there are little passages in the intake manifold leading to all the ports, and to fix the problem i have to get the car to idle off the IAC and make sure the blade is as closed as possible, and to make sure that the T.B. and the intakes IAC ports line up?

LiENUS

I am assuming entirely that your problem is caused by your idle, but yes thats the jist of it. The big symptom of it is severely split blms, left will be like 110 and right will be 140 or vice versa.

otherwhitemeat

iTrader: (3)

split blms? what does that stand for?

DroppedM6Z

iTrader: (5)

I believe Ed Wright goes 9.91 @ 136 on a Stock LT4 intake.

T/A KID

iTrader: (12)

It ain't stock but it is a LT4 intake nontheless.

A-man930

iTrader: (2)

Any pics of an injected dual plane intake setup? That sounds interesting to me, I don't think I've ever seen one.

Mike96z

iTrader: (78)

If you do a search on the internet, there is a custom aftermarket intake, where this company has cut the top off a stock intake and welded some aluminum **** up and made it look really nice and added bigger runners etc and you use it with the monoblade if you want because ts already ported for it and they put it on a stock LT1 and seen really big gains. I thought the price was around 1k with TB. I can search it again.

T/A KID

iTrader: (12)

http://home.wideopenwest.com/~squinn0039/ltx.html

Here ya go.

If I didn't like the way the new Edelbrock intake looked and wanted to mess around I would do a Converted Dual plane intake with a Elbow and monoblade. I think it would do better than most single planes below 6500RPM IMO.

Revelation Z28

iTrader: (10)