65 valiant small block turbo build

If you're going low budget, just run the stock cam, but if it's fucked, that's a good conservative cam for a turbo.

Although I have a split duration 218/224 in a stock bottom end 318 mag. Use 360 heads and shave the pushrod pinch a little. Magnum exhaust manifolds are good with an Abodies engine bay. Use whatever rocker you have. Stock stamped steel rockers are ok at that lift with 1.5

But the cam and valve train is the easy part...

You need to be thinking about fuel and spark. Most people use a carb and a large fuel pump Or go FI and spend some money. Timing can be controlled by using a BTM and a mechanical advance only dist. Or a HEI 9 pin that when a pin is grounded it retards timing by 10 degrees, use with a Hobbs switch in intake. Or just lock out the distributor and lean a little on a smaller turbo that will boost quickly.