Overheating Confusion, Smart people Needed!

[tyoneal]

To All:

I wrote a while ago regarding the overheating issues I was having with my Bowtie 400. (See more about the car at the bottom of this post.)

Here is what I have done so far.

Replaced Radiator Cap
Checked Radiator hoses
Replaced fan with a larger one
Made sure the cowl around the radiator was sealing correctly
160 degree thermostat
Made sure Radiator had coolant and water in it
Have checked water pump (It has a March front Drive system on it.)
Have checked water temp gauge and replaced.
It does have A/C and I have added an extra fan to the condenser to promote effective cooling
Advanced Timing as far as possible.

This last item I found welded so it could be recurved. Can someone explain why this s done? The car was used at the track real often and I guessed it may had something to do with that, but I don't know, and I haven't seen any literature one way or the other about it.

Could someone please enlighten me on this, AND whether or not this would be causing the overheating?

It is now cooler here in Texas and it still keeps trying to get hot.

This is very frustrating and I would EXTREMELY thankful to whomever could solve this puzzling question and offer the correct solution.

Thanks in advance.

Thanks,

Ty O'Neal