What's new
CK5
Register an account today to become a member! Once signed in, you'll be able to participate on this site by adding your own topics and posts, as well as connect with other members.

Carburetor problems on hills....

The1980BEAST

The1980BEAST

1/2 ton status
Joined
Dec 6, 2008
Posts
323
Reaction score
0
Location
Ft.Worth Tx
Is there anyway around this? Would a better newer carburetor work better or do I just have to switch to TBI

my engine cuts out alot on inclines and now its causing me to get stuck
DSCF0417.jpg

DSCF0421.jpg

DSCF0425.jpg


DSCF0426.jpg


I'm 6'1 so that was probably to steep anyways but it does it on other hills aswell

Opinions?
 
There are some modifications that can be performed on edelbrock, quadrajet, and holley carburetors. What type of carb are you running?
 
Probably quadrajet.

Im running Holley street avenger 570cfm carb on my 305cid and I can hit inclines worse than in your pics without stalling out.
 
After working on my q-jet it is much better also. Take a pic & show us what you have.
 
what can i do to a edelbrock 600cfm carb? it is on my 350 in my 77 k20, have not seen how it does, but if there is anything i can do to make it better i would sure like to try it before i take it out and find out it sucks on inclines
 
I've found a holley fuel injector kit complete on amazon for about $775

And I'm not with my blazer at the moment but I'll get one up for you tomorrow
 
Every carb brand I think has some type of off road kit. Like all things else, it will be a trade off if you do a conversion.
You are stalling because The carb is flooding when you are steep.
The float drops and the gas floods in.
You can do homemade mods, which are stupid, like changing the hinge on the float. this allows you to choose if you want to stall going up hill or down hill or on a slant.
The off road kits, have less finicky floats and don't operate off as much fuel in the sump. So, you can essentially go steeper on all angles without flooding as bad. It still won't run upside down, and the only other real trade off I see is less throttle response maybe running hard down the highway.
 
I have never seen an offroad kit for a quadrajet. Most issues with them is just tuning. Float shape has a lot to due with that. Sometimes do-it-yourself mods are nessicary. I don't think anything is wrong with it if they are done properly.

Q-jet floats are hung from the front of the carb. If the float is larger at the back of the bowl or your float level is set too low when you climb a steep hill the float will sink into the fuel & close the needle. When this happens you starve for fuel not flood out.
 
Exactly, guys sometimes turn this around and starve going downhill and flood going uphill.

There really is no middle ground. I don't fully understand but most people with Q-jets say they are better for off road or steep angles. The Edelbrock are for street and the offroad kits will help but not correct the problems entirely.
 
Actually I didn't save it, it was from a month or two ago when I was looking and now I cant find anything below 1200 :(
 
Fuel injection or propane WILL solve your fuel delivery problems at angles.


Short of that, a quadrajet (the carb that would have been on that truck from the factory, I bet its been replaced) is the best with angles hands down.

I'm still running the factory equipped Q-jet on mine, no special tricks.

Here's a couple videos showing how it runs:

[youtube]i2TfF10-GWk&feature=channel_page[/youtube]


From a few years ago, this is the worst its ever run for me:


[youtube]jKcTuoCJJiM&feature=channel_page[/youtube]

This is what that last obstacle looks like from the other side:

e80bb756.jpg
 
Underpowered said:
what can i do to a edelbrock 600cfm carb? it is on my 350 in my 77 k20, have not seen how it does, but if there is anything i can do to make it better i would sure like to try it before i take it out and find out it sucks on inclines
Click to expand...

I put the offroad kit in mine. I was very pleased with the performace after. I think it cost all of about 11 bucks and very easy to put in. I got mine at checker, but just about everywhere sells them. I am sure I have the part number somewhere if you need it.
 
As far as off road carbs, just ya gotta keep on the gas. If it floods out you gotta open the butterflies to blow that stuff through. I've been in situations where the truck wouldn't idle but it would run if I held it above idle. For the most part on inclines that would cause that I am usually at full throttle anyway. If it stalls out put the gas to the floor and crank it thats the only way to get it restarted without having to crank it for five mins getting an intermitant sputter.
 
Chevy305 said:
As far as off road carbs, just ya gotta keep on the gas. If it floods out you gotta open the butterflies to blow that stuff through. I've been in situations where the truck wouldn't idle but it would run if I held it above idle. For the most part on inclines that would cause that I am usually at full throttle anyway. If it stalls out put the gas to the floor and crank it thats the only way to get it restarted without having to crank it for five mins getting an intermitant sputter.
Click to expand...

That's how it worked for me, I had a stock blazer that I took everywhere that my 31" tires allowed me and hit lots of 45 degree inclines and the only way it worked was flooring it, if hills were shalower it was fine but at hose extremes you had to keep it floored to get up anyway since most of them were muddy and traction was non existing. :D
 
DR said:
I put the offroad kit in mine. I was very pleased with the performace after. I think it cost all of about 11 bucks and very easy to put in. I got mine at checker, but just about everywhere sells them. I am sure I have the part number somewhere if you need it.
Click to expand...

for $11 it cant hurt to try it, thats for sure.


better than spending $400 on a new holly off road avenger, or even more for 'pane or EFI
 
You must log in or register to reply here.

Latest Posts

Top Bottom