[mehoff400]

12bolt is the brand of the valve cover.

i guess i could of explained what it does with the RPMs a little better. if i let it idle up to temp the gauge moves as it should. once i give the truck some gas and hold it, it seems the gauge moves almost at the rate the rpms move up. if i give it gas the temp gauge will move up. if i let it idle again the gauge wont move up until i give it more gas. it will keep doing this until the gauge is pegged.