LS1-LE3
These heads are about 10 RWHP/RWTQ above 4000 RPM over the LE2 heads with no loss of mid range TQ. These heads use 2.055/1.60 valves and fly cutting the pistons is usually a MUST on the stock bottom end to gain enough piston to valve clearance.

The LS1 LE3 heads consist of:

2.055/1.60 valves
Lunati 73925K1 dbl spring kit, Ti retainers, locks and locators
custom valve job
mill, cleaning and assembly
cleaning
assembly
flow about 315/220
ready to bolt on!

LS1 LE3 heads and custom cam* – $1450 plus shipping. $1100 for heads only.