Re: Making the car more consistent
 

Just a suggestion.....Make sure you stage the car the same every run and the pedal to the left of the throttle is your friend! What viscosity oil are you running?

Re: Making the car more consistent
 

The cam is a old hemi grind cam. It was part of Dad's old small block stuff he put in the motor, but i don't know anything about it. Oil is 10W 30. I have a 2 day race this weekend i'm going to do some more testing hopefully it's just me flipping out.

Re: Making the car more consistent
 

is there a metter that i can buy for air temp and denisty

Re: Making the car more consistent
 

The carb size is fine. You do not need a larger one.
What's the list number on the carb?
What track are you running at?
Do you have any idea what the DA was on any of those passes?

Re: Making the car more consistent
 

Are you running slicks? If not, I'd suggest you try them.
What's the camshaft duration @ .050? If it's got any kind of performance camshaft, you should be turning it more than 5000 rpm. It won't be consistent if it isn't revved.

Re: Making the car more consistent
 

Racer 1320 makes a good point"Make sure water temp is exactly the same every pass, burnout duration is exactly the same every pass, launch RPM is exactly the same every pass, shift points are exactly the same every pass and you are putting the car into the beams at exactly the same spot every time."
It's possible that the motor was a littler colder on the last pass which would reduce it's tendency to detonate at the top of each gear and at the traps (You can't always hear when they are detonating) which would make the motor run better and pick up all the way down the track.
If you don't have a weather station to calculate density altitude I would recommend that you track and log the air temperature. It's a reasonably good indicator. If the temp drops 10 degrees, depending on your jeting, you could pick up as much as 0.1

Re: Making the car more consistent
 

Thanks all for the help, I finally got my issue taken care of. That electric water pump motor and 2 electric fans took care of it. For driving on the road though i'd say i would need an 8blade water pump to drop the temp even more. Since Lucas Oil Raceway is only 20 min from my house I don't have far to drive and it barely hits 190 on the temp gauge now. I was bracket racing at the Fall Classic this weekend first pass was the slowest all day then it got faster. 8.57 /8.554 /8.544 and i broke out 3rd round it went a 8.508 this was at 8pm saturday and it was cooler. I have to say i didn't expect it to pick up that much.