C6 Corvette Z06 LS7 Cylinder Head Upgrade

LS7 Cylinder Head Issues (Overview) 1. Valve Guide Wear (Primary Issue)

The most common and serious LS7 problem is premature valve guide wear.

Factory valve guides were often out of spec (too loose or inconsistently machined)

Excessive wear allows the valve to wobble

This can lead to:

Burnt valves

Dropped valves

Catastrophic engine failure

Preventative head work is far cheaper than an engine replacement ⚠️ Failures have occurred on stock engines, sometimes under 20-30k miles.

The LS7 is an exceptional engine, but the factory cylinder heads are its Achilles’ heel

The issue is well understood and solvable

Davenport Motorsports has a proven solution for this problem!

KATECH Engineering LS7 Cylinder heads CNC ported intake and exhaust runners Full Chamber CNC porting CHE Bronze Hybrid Valve guides UPGRADED exhaust valves by Ferrea (light weight) Competition valve job checked and decked for straightness Reuse your stock valve springs, (upgrade extra $$) New GM Valve seals GM premium head gaskets ARP head bolts

CUSTOM TUNING NOT REQUIRED!

Professional installation Road test

OPTIONAL ROCKER ARM TRUNNION UPGRADE AVAILABLE

NOTE: THIS IS BASED ON A CORE EXHCHANGE - WE KEEP YOUR INITAL CYLINDER HEADS,

See other packages for Horsepower upgrades that include cylinder heads