So I’ve been offered a 5.3l out of a 2009 Tahoe from the pictures it has a code# 12571048. Is this a good core to get and play with I don’t know much about ls motors.

 

It’s a GenIV motor with 58x crank and 4x cam signal. Crank reluctor is on the back end of the crank. If you got the complete harness and PCM with it that’s awesome.

Edit: it will be drive by wire only (all 58x GenIV are that way) so you’d need the pedals and the throttle controller box to make it all
work as one swap. Using a Holley aftermarket PCM can get you around much of that though.

 

Most likely an LC9:

https://www.onallcylinders.com/2018/...ads-cam-specs/

2009 won't have VVT but will have AFM (turn off 4 cylinders' spark, fuel and disengage lifters). 1 bolt cam gear. E38PCM, Flex Fuel capable.