C6 Z06 LS7 Cylinder head UPGRADE
From $7,900.00
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 in conjuntion with LPE has a program to alleviate this problem
Supply upgraded LS7 cylinder heads, core exchange required
CNC ported intake and exhaust runners
Full Chamber CNC porting
New Valve guides
UPGRADED INCONNEL exhaust valves
Competition valve job
checked and decked for straighness
Reuse your stock valve springs, ( upgrade extra $$)
New GM Valve seals
GM premium head gaskets
ARP head bolts
Upgraded spark plugs
NO custom tuning required on stock engine
Professional installation
Road test
OPTIONAL ROCKER ARM TRUNNION UPGRADE AVAILABLE -
See other packages for Horsepower upgrades that include cylinder heads
