For Starters, This is what i have to work with,

1990 258 I6 w/ 135,000 miles
Offenhauser 4 brl intake
390 cfm Holley 4brl carb
DUI distrubtor
Pacesetter header w/ 2.25 exhaust

It was bought with all of this stuff already installed. I took it out for the first shakedown run, after an axle swap, and it does not like any off camber situation. I could raise or lower the front 5 or 10 degree's and it wants to shut off/flood. I need some opinions on what to do. FOR CHEAP!!!!!

Should I keep the Holley and try to tune it w/ a offroad needle and seat?

Should I find a Motorcraft 2100 2 brl and use an 4brl to 2brl adapter?

Should I find another carb setup? Q-jet or something?

I really cant aford to swap to fuel injection or propane. I am not looking to run it upside down or anything like that, I just want it to run on some mild trails and not stall or flood out.

Thanks in advance...

buy a rebuild kit and offroad (spring loaded) needle and seat,
i bought mine and it did the same thing, turned out it was dirty and the needles worked wonders, i wasnt too expenseive either

I know there are some tricks to making a holley work off-road, you might try their tech line and see if they can help. If you can't get it to work, I would think the Motorcraft would be the cheapest solution.
Travis..

Well I have heard you get one of two things with a Holley,

1. it will idle and not run good

or

2. it will run good and not idle

I ask alot of shops around and they say no one deals with Holleys, they all like Eldelbrocks (sp) or some other brand. I got a Holley manual and tried that route to set it step by step from the book. With no luck.


I know they do it everyday, but will they be able to help me over the phone? (Holley tech line)

youre gonna spend $30 to rebuild it if you do it yourself, in the instructions, it will tell you how to set it up initially, do that and see if it works for you...
thats what i did and it works great on trails and hill climbs, but when i got more into slow crawling and steep angles, i couldn't keep it running and it bugs the chit out of me... hopefully i will be running propane soon

but from what you say, just a carb will do fine for you... untill of course you realize that I-6 doesent have enough power:laughing:

The I6 is a great motor.The problem comes when they dont run right.

I had a 258 HEI Weber and it ran great.Not offroad so much but still pretty well.

That being said I love my 4.0 Fuel Injected

I know they do it everyday, but will they be able to help me over the phone? (Holley tech line)

Yes, I think they'll be able to give you some pointers. They don't make a truck avenger that small, so I don't think they'd mind giving you some direction.
Travis..

Well I got a rebuilt 2100 for free and I am going to try it out.

With the Offenhauser intake I have I am pretty sure the carb is going to sit sideways ( just like the Holley). Is there any draw backs to it running like this? Every other 2100 I have seen has been facing forward. Just wondering..........

put the howell injection kit and be done with it.

Whats the going rate for Howell injection?

Cheap is what I'm looking for.

Not unless someone is willing to swap a 4 brl intake and a 390 Holley for it!!

WOW, just answered my question

$1195 brand new!!

off of their site

I had good luck with a Weber...You might be able to find a used one for a little bit of nothing on eBay. But personally, I would swap in a different drivetrain (you could probably do a carb'ed 350/turbo 350 tranny for less money) before I blew $1200 on Howell FI for an old 258.


IMHO,
Jake

Oh hell no I am not spending that kind of money on a FI setup!!

Cheap is the keyword here. But I am thinking of a V8 swap later on down the road (maybe a year or two)

I would strongly encourage you to find a Motorcraft/Autolite 2100. Stupid simple carbs to work on, They run decent- and there are plenty of them around. I think that I gave twenty dollars for the last one I bought.

If you are gonna run a carb go in this order.

MC2100 or MC2150 (Altitude adjustment)

Stock Carter modified by a guy that knows how to turn it back into a carb and not a mock throttle body.

Weber, ran one, it worked ok, it petered out on vertical climbs before my carter and MC2100s.

I ran a modified carter that a friend built for me. Ive had my jeep flopped on its side still running with one. You can hook up a vacuum high idle to compensate for extreme angles and even on the most serious vertical climbs I rarely had a problem with it once I turned it on. However an MC2100 works just as good if if not a little better in stock form and doesn't require a guy that knows carbs inside and out to tweak them. Not to mention they are a dime a dozen so parts are cheap and they came on v8s so they can pump some gas even on mild engines.

Any other carb minus the truck avenger and thats even a maybe, I ran one one of these as well is just a waste of time, including your holley on your truck now. Take that thing off and sell it, buy a MC2100 it will be the best mod you ever did to that engine. Anybody who puts a 4 barrel carb on a 258 is just plain stupid and doesn't have a clue.

Ok this is what I started with,
http://i301.photobucket.com/albums/nn61/dprince382/carb%20swap/0222.jpg

This is the MC2100 1.08 I am using,
http://i301.photobucket.com/albums/nn61/dprince382/carb%20swap/001.jpg
http://i301.photobucket.com/albums/nn61/dprince382/carb%20swap/002.jpg

This is the carb adapter that matches the bolt patterns I need,
http://i301.photobucket.com/albums/nn61/dprince382/carb%20swap/004.jpg

Does anyone know what this does excatly, I know it has something to do with the choke? Can I take it off?
http://i301.photobucket.com/albums/nn61/dprince382/carb%20swap/whatisthis.jpg

Weber, ran one, it worked ok, it petered out on vertical climbs before my carter and MC2100s.


I didn't have any problems with flooding on the steep stuff with my Weber...The stock Carter BBD flooded out more easily.


YMMV,
Jake

I didn't have any problems with flooding on the steep stuff with my Weber...The stock Carter BBD flooded out more easily.


YMMV,
Jake

I didn't have a stock carter. Mine was modified to make it run like a carb and not a half assed TBI like Jeep tried to do. It was night and day better then the weber. Yes I agree the Weber is better then a stock carter, but still can't touch the MC2100 IMO

Should I find a Motorcraft 2100 2 brl and use an 4brl to 2brl adapter?
This.

I didn't have a stock carter. Mine was modified to make it run like a carb and not a half assed TBI like Jeep tried to do. It was night and day better then the weber. Yes I agree the Weber is better then a stock carter, but still can't touch the MC2100 IMO

I loved my 2100, and then the 2150 on my v8.

Does anyone know what this does excatly, I know it has something to do with the choke? Can I take it off?
http://i301.photobucket.com/albums/nn61/dprince382/carb%20swap/whatisthis.jpg


That is the choke pull-off. You want to keep that unless you are going to wire the choke open or make it a manual choke.
Travis..

WHAT A FAWKING LET DOWN!!!!!!

I put the carb on today and it fired right up. It is dripping fuel from the venturi's ( the hollow round looking things when you look down in the carb, about the size of a quarter). This is making it flood out.:mad3::mad3:.

Any ideas on why this is happening?

needles in wrong or your floats are in wrong... just a guess