Hey guys, I've been wrenching away on the roadrunner trying to get it running to its full potential. Had to put a new oil pan on it over the last few days discovered it had a pin hole and was leaking pretty good. But now I'm getting ready to yank the 2 4 bbl carter carbs off of it and throw a rebuild kit in them. I can tune 1 carter 4 bbl but I have no clue how to tune 2 of them. So how's it done? (I'll probably take it to a mechanic and say here tune this in for me lol.) But I'd still like to get it as good as I can.
Also I've been wondering if it's too much carburetor for the motor. Here is what I'm running: lunati 30306 cam Duration 285/295, Lift .507/.534, it has keith black pistons 10:1 compression. 440 4 speed dana 3.54.... Don't know what cfm the carbs are I havent looked them up yet. Just curious if this motor is drowning its self rather than getting maximum power. The car sat for like 13 years just after the engine was rebuilt. I had to replace the gas tank and sending unit from all the rust and old gas turned to turpentine. It was running 2 fuel filters but I'm sure some of the gas made the inside of the carbs a little more than nasty.
I was trying to tune it in a bit last night. I advanced the timing just a little bit and messed with the fuel and air screws on the primary carb trying to get the smoothest idle I could out of it. I did get it running just a little better and got it to be just a little bit more responsive. But here's the problem. I took it out last night after getting all that done. I put it in 1st gear let the clutch out and had it just barely rolling. I stomped the gas pedal to the floor and opened it all the way up. It was like I turned the key off for a second and then it VERY slowly started revving up and then finally it picked up and started fish tailing all over the road. So I know this thing has gobs of power just waiting to be unlocked but it's losing probably more than half of it right after you step into it. I'm guessing the carbs are either 500's or 650's. I'll double check the numbers on them and try to find out for sure what they are. The dual 4's are cool but if it's too much for it I have no problem swapping them out for a single 4 bbl setup or maybe a 6 pack if that wouldn't be too much. I'd rather be having fun with the car than being able to say I've got a dual 4 set up lol.
Also I've been wondering if it's too much carburetor for the motor. Here is what I'm running: lunati 30306 cam Duration 285/295, Lift .507/.534, it has keith black pistons 10:1 compression. 440 4 speed dana 3.54.... Don't know what cfm the carbs are I havent looked them up yet. Just curious if this motor is drowning its self rather than getting maximum power. The car sat for like 13 years just after the engine was rebuilt. I had to replace the gas tank and sending unit from all the rust and old gas turned to turpentine. It was running 2 fuel filters but I'm sure some of the gas made the inside of the carbs a little more than nasty.
I was trying to tune it in a bit last night. I advanced the timing just a little bit and messed with the fuel and air screws on the primary carb trying to get the smoothest idle I could out of it. I did get it running just a little better and got it to be just a little bit more responsive. But here's the problem. I took it out last night after getting all that done. I put it in 1st gear let the clutch out and had it just barely rolling. I stomped the gas pedal to the floor and opened it all the way up. It was like I turned the key off for a second and then it VERY slowly started revving up and then finally it picked up and started fish tailing all over the road. So I know this thing has gobs of power just waiting to be unlocked but it's losing probably more than half of it right after you step into it. I'm guessing the carbs are either 500's or 650's. I'll double check the numbers on them and try to find out for sure what they are. The dual 4's are cool but if it's too much for it I have no problem swapping them out for a single 4 bbl setup or maybe a 6 pack if that wouldn't be too much. I'd rather be having fun with the car than being able to say I've got a dual 4 set up lol.
