Hi All,

Im finishing up my SB350 engine build, and I want to run a cam with .465 lift with remanufactured Vortec heads. I already checked my retainer to valve seal clearance and it reads .530, which suprised me since other people said theres only about .480. Could this increased clearance be a result from the remanufacturing/cutting of the seats and valves? Anyway, I assume the .465 lift on this cam will work fine. BUT....

Im concerned about the valve springs pressure and coil bind....

1) Stock vortec has 80 lbs springs which I think is too light. Should I be around 100 lbs or so?

2) Are there any inexpensive springs that will drop right in? I dont want to grind or machine anything to make new springs fit. Id also like to keep the stock retainers.

By the way, its just going to be a street motor, not going to the track. So not looking for anything radica, just a cheap fix to the spring issue.

Thanks!