I installed an Edelbrock 1403 on my 1980 F-150 4x4 this past year. After some tweaking, the choke works well, acceleration is good and mileage is about 18 mpg on the highway. However, I was doing a little hill climbing this past weekend and had some rather serious carb issues. To begin with, the temperature was below zero, but I don't think that was creating any problem. Here's what happens. I can take off at the bottom of a fairly steep hill and when I hit the incline the carb seems like it floods. It just bogs and there's no power. I'll shove in the clutch and the carb is sputtering pretty bad. I realize there are many variables, but if someone could just give me some ideas as to what I should look for. I changed the jets from the stock .086 to .083 and the metering rods are matched to improve power. The accelerator pump linkage is in the longest stroke setting. By the way, this carb is sitting on top on a 300 six cylinder, with a Clifford intake. I installed the split exhaust manifolds. I have made a few enhancements to the motor also. I ran it through the gears not too long ago and during my Italian tuneup the motor was turning 5200 rpms at 84 mph in third gear before I shifted into 4th. I have no idea what top end is, but the needle was up against the trip odometer post and the tach read 4200 rpms. None-the-less, if anyone has a suggestion about the problem with the hill climbing, I'd appreciate any comments.

thanks

 

Moved to proper forum.

 

Sounds like a float level problem that is agravated by steep inclines.