Thread: Head work and valve springs

I picked up an set of stock heads and plan to port and polish them myself. I was going to have larger valves and new springs installed. Any recommendation on springs? Its a stock cam I think. The motor was apparently gone through about 5 years ago but I did not get a build sheet when I bought the car so I have no idea if the cam was touched. I don't want to do this work and end up wiping a cam lobe with too stiff a spring....

Take a look on our site for porting templates from the PowerSource book. I think we have them ... As far as springs, make sure you measure the installed height after the head work. It can affect the spring rates. Shim as necessary to get the proper installed height. Comp Cams 980s are safe choice. If the cam you choose is a bit more aggressive, the LT1 springs work (see the part #s page for some more spring #s...