These heads are about 10 RWHP/RWTQ over the LE1 heads due to the larger 2.02/1.60 valves allowing larger measurements in other areas of the port. There will be less piston to valve clearance with these heads due to the larger diameter valve and thicker valve margin.

The LS1 LE2 heads consist of:

2.02/1.60 valves
Lunati 73925K1 dbl spring kit, Ti retainers, locks and locators
custom valve job
mill, cleaning and assembly
flow about 305/220
ready to bolt on!

LS1 LE2 heads and custom cam* – $1350 plus shipping. $1000 for heads only.