Just wondering what the best off-angle carb there is out there. What has anyone done to any said carb to make it run better at angles.
Also I was just wondering, on a side note, what I could do to my 500cfm holley 2300 so it would work better off-road

 

I have seen kits before made by holley that you put inside your carb to reduce fuel movement. might check out one of these. try holley online or your local carb. shop. but I have seen them before.

 

Most of the time, if it is climbing steep angles, mounting the carb backwards is a good fix. Not good when you try to stop, and the motor floods out though. I have heard that q-jets are really good off-road, but I haven't run one. Really, the best thing to run is EFI.

 

I have heard some really good things on the new holley truck avenger carb, When I have the 450bucks too burn, i'm gettin one for my bronco.

 

The old Rochester Quadrajets are tops in the off road category as far as unmodified carbs are concerned. There once was a block of wire mesh that could be installed in carb's fuel bowls on each side of the float that prevented fuel sloshing. I don't have any idea where they were supplied from or if they are even still avaliable anymore. Worked like the mesh that is in NASCAR fuel cells. Might could experiment with some steel wool if you felt like promoting your carb to a rolling laboratory!

 

By off-angle do you mean off camber or a steep incline. I know from personal experience my used and abused 2150 is pretty good at steep inclines, to the point where I thought the truck was going to flip backwards.

Not sure how great it would be on a 20 degree sidehill.

Going by magazine reviews, the Edelbrock Thunder Series AVS off-road are the best right out of the box.

 

Yeah best all around hill climb and side hill. I have heard good things about the 2150's, they just don't flow ennough air.

 

the edlecraps are junk, allthough I have heard plenty of good things about the truck avenger carbs. The best carb for extreme angles is the Q-jet of course, but it's a still a Q-jet, you sacrifice tunability and power for extreme angles.
However, I've NEVER had a problem with either of my 4160 holleys. On all the sidehills, hill climbs, hill decents I've been on, I've been far more worried about rolling the little broncoII over, than the carb flooding out.

 

Still looking for the best offroad carb. Switched back from a holley to the old motorcraft 2150. It just can't be beat offroad. I just can't get a holley to run, unless my foot is to the floor, and I need the flow of a 4v! What to do what to do?

 

Maybe put a weak spring under the float to help it against the incoming fuel? Or just go wild with dual 2BBLs with progressive linkage.
Seriously, though, you may be best off with something like the megasquirt DIY throttle body injection, or modify your intake and program the system to run it as multiport batch fire.

 

I 2nd the Holley Truck Avenger. They're designed for off angle driving. Check them out.

 

I would love to go efi, but its prohibatively expensive for my 400ford. tried the sping loaded needle and seat in the holley, didn't make a difference. My motorcraft 2150 came with a spring for the needle and seat. Location of the jets helps the motorcraft over a holley because being on the bottom of the fuel bowl makes them harder to uncover and they don't lean out under braking and richen under acceleration like a holley. I don't know, I have been reading about the eldebrock carbs and the mods needed to make them offroadable. Springloaded needle and seats, lower float adjutment and vacume hose filling the space between the fuel bowl crossover. I can pick one up at shucks for around 223.50, so I might try that. Let you all know if it works out for me. I should call Demon and see how there 625 roaad demon jr works offroad, but they look like a slicked up Holley so I'm not holding my breath.Thanx

 

The Holley truck avenger is the way to go if your buying a new one. If you want something less expensive look for a used '84-86 351 that has the Holley 4180. It has four corner idle with 4 idle screws. They are harder to stall than a 4160.

 

What it comes down to, is how much do you want to spend? Of course efi is the cats ****, but old school guys like me hate to go the way of modern technology. Some old school drag racing ideas work on off roading. Baffles in the float bowls help bigtime (foam type), along with being jetted a little rich for the lean off camber moments. Having a little more then the usual 5 lbs or so fuel pressure isn't hard on the float needle valve (7 lbs max) carbed, but can help when it counts. Not only is a good fuel system crucial, but so is a good oiling system (baffled oil pan). What the "heck" is good about perfect fuel delivery, if your engine sets up from lack of oil pressure? Nada bayby. Zip. Zero Spend big bucks. Seeya. Electric fuel pumps are the best, because they aren't dependant on engine rpms, or any other mechanical limitations. And a good fuel pressure regulator plays a big role too. I don't care if anybody listens to me, but I've wasted a bunch of money for dyno time on both off road trucks, and quarter mile bracket racers. I'm not rich, but I do learn from my mistakes. Yeah, Demon carbs are the chit, if you have the money to go all out in the carb scene. As far as off the shelf goes (read cheapest for best value), the Holley Truck Avenger can't be beat out of the box for serious wheeling. By all means, please don't listen to me. Trust nobody, and do your own research. Some people go by what they hear, and some go by what they know. Sorry, but I trust nothing of what I hear, and only half of whay I see. Airborne all the way.

 

A carb with center hung floats like a dual line Holley work best for that enviroment when you install jet extensions and bowl float baffles. this keeps the fuel from sloshing out of the carb and the jets from being exposed.
The old 3310 750cfm Holleys were good for this when the jet extensions and vent baffles were installed. I believe that the Truck Avengers are center hung floats too.