Dumb question but I did a search LOL

[Joyridin]

You do not need a steam port. On the thermostat outlet, there is a bleed port. That is the only thing the L83's have unlike the steam port on the LS engines. I plugged the outlet from the thermostat as that originally went to the overflow container and is pressurized. I drilled a small hole inside the housing to connect the port above the thermostat. It works great and you don't need a lot of extra hoses running it to the radiator.

I used a PMW set-up on Derale twin fans. Everything for the radiator was off the shelf and I have about less than $1000 in it. I found the fans new on FB marketplace, so I really have about $750 in the whole deal and the PMW set up doesn't instantly load the alternator. Look at the Autocoolguy.com PMW set-ups. They run totally independent of the computer. I have a Digital Dakota on my car and it is a pain as mine loses the memory when the battery is disconnected and you have to reprogram it. The autocoolguy is totally adjustable.

I bought Speed Engineering headers. They fit perfect on the C-10 if you are going with headers.