Please let me know !
Thread Starter
Racer
Joined: Feb 2020
Posts: 288
Likes: 100
From: Florida
Please let me know !
I believe this issue has been discussed to death but I am new to C6 and if someone can answer this question I would appreciate it. Looking at a neighbors 2013 Z06 with 8,000 miles. I know the 427 engine has had valve guide issues. My question is did GM correct this issue on the later model Z06 specifically the 2013 model ? Or would this car be a candidate for the valve guide and rocker arm replacement fix ?
I appreciate your help...
I appreciate your help...
Last edited by miss my Z06; Jul 30, 2021 at 10:39 AM.
Melting Slicks
Joined: Apr 2019
Posts: 2,517
Likes: 1,167
From: Northern Wisconsin
The general assumption is that all LS7 engines have this problem regardless of year of manufacture. GM never addressed this issue, and even new LS7 crate engines are assumed to be no exception (although it seems GM has recently discontinued production of LS7 crate engines).
That being said, there are several suppliers of reworked cylinder heads that solve the problem, so it is wise to just write the cost of replacing the heads into the deal and have it done shortly after purchase. Once finished, you will have a powerful and exciting sports car.
That being said, there are several suppliers of reworked cylinder heads that solve the problem, so it is wise to just write the cost of replacing the heads into the deal and have it done shortly after purchase. Once finished, you will have a powerful and exciting sports car.
Last edited by ClothSeats; Jul 30, 2021 at 11:03 AM.
Race Director
Joined: Nov 2017
Posts: 12,759
Likes: 10,657
From: Prosper TX/Austin TX
2020 C6 of the Year Winner - Modified
The general assumption is that all LS7 engines have this problem regardless of year of manufacture. GM never addressed this issue, and even new LS7 crate engines are assumed to be no exception (although it seems GM has recently discontinued production of LS7 crate engines).
That being said, there are several suppliers of reworked cylinder heads that solve the problem, so it is wise to just write the cost of replacing the heads into the deal and have it done shortly after purchase. Once finished, you will have a powerful and exciting sports car.
That being said, there are several suppliers of reworked cylinder heads that solve the problem, so it is wise to just write the cost of replacing the heads into the deal and have it done shortly after purchase. Once finished, you will have a powerful and exciting sports car.
