Question about camshaft

[oldeskewltoy]

(07-04-2020 06:37 PM)CHACAMAN Wrote:  hi, thans for time and help, guys i have a 4AGTE whit the next setup:

1 - Stock Big Port Head
2 - 4AGZE Block
3 - MegaSquirt II
4 - GT28 Turbo
5 - 7200RPM max

i want to buy a camshaft for my engine i don't now what to buy, but I don't want to have to change the spirals and retainers, just install the cam and get more hp and torque ...
What lift and what opening time do you recommend?

Assume you mean springs, and retainers???

You will still have to check valve clearances, and possibly change shims - No cam will say they don't need to check valve clearances.