The Texas Speed Gen 5 LT4 AFM Delete Valley Cover is the replacement valley cover for LT4 engines that are having the Displacement on Demand (DOD) or Active Fuel Management (AFM) system removed. Texas Speed notes it is a popular part for anyone swapping camshafts in these Gen 5 supercharged engines, since a cam swap is usually the point at which the AFM hardware comes out.
A typical use is a race or retrofit customer moving to an aftermarket camshaft who wants to run traditional hydraulic or solid roller lifters in place of the factory AFM lifters. The Texas Speed cover takes the place of the factory valley cover in that configuration. This listing is the black version, Texas Speed part number 25-TSG5LT4VC-Black.
Specifications
- Application: Gen V LT4 engines with DOD/AFM removed
- Purpose: Replacement valley cover for AFM delete and camshaft swaps
- Lifter compatibility: Supports builds switching to traditional hydraulic or solid roller lifters
- Finish: Black
- Manufacturer part number: 25-TSG5LT4VC-Black
Vehicle Applications
For Gen V LT4 engines. Vehicle list shows the LT4-equipped applications from Texas Speed's fitment data.
Chevrolet Camaro ZL1
- 2017 Chevrolet Camaro ZL1
- 2018 Chevrolet Camaro ZL1
- 2019 Chevrolet Camaro ZL1
- 2020 Chevrolet Camaro ZL1
- 2021 Chevrolet Camaro ZL1
- 2022 Chevrolet Camaro ZL1
- 2023 Chevrolet Camaro ZL1
- 2024 Chevrolet Camaro ZL1
Cadillac CT5-V Blackwing
- 2022 Cadillac CT5-V Blackwing
- 2023 Cadillac CT5-V Blackwing
Cadillac CTS-V
- 2016 Cadillac CTS-V
- 2017 Cadillac CTS-V
- 2018 Cadillac CTS-V
- 2019 Cadillac CTS-V
Chevrolet Zo6 Corvette
- 2015 Chevrolet Zo6 Corvette
- 2016 Chevrolet Zo6 Corvette
- 2017 Chevrolet Zo6 Corvette
- 2018 Chevrolet Zo6 Corvette
- 2019 Chevrolet Zo6 Corvette
Vehicle applications reflect the fitment published by Texas Speed & Performance for this part number. Confirm your engine and cylinder head configuration before ordering.
FAQ
What engines does the Texas Speed Gen 5 LT4 AFM Delete Valley Cover fit?
Texas Speed describes this valley cover as a replacement for Gen 5 LT4 engines having DOD/AFM removed. Its fitment data covers LT4-powered vehicles such as the Camaro ZL1, Corvette Z06, Cadillac CTS-V and CT5-V Blackwing.
Why do I need a new valley cover when deleting AFM on an LT4?
Texas Speed sells this cover as the replacement valley cover for customers removing DOD/AFM from LT4 engines, and for cam swaps where traditional hydraulic or solid roller lifters replace the factory AFM lifters, so the engine runs with the AFM system fully removed.
Is this valley cover only for cam swaps?
It is most often used with a camshaft swap, which Texas Speed notes is when customers typically remove AFM, but it suits any Gen 5 LT4 build that deletes DOD/AFM and runs conventional hydraulic or solid roller lifters.
Does the Texas Speed LT4 valley cover fit LT1 or L86 engines?
Texas Speed's description names the LT4 specifically. Its engine data also tags the LT1, L86 and L87, so confirm with Berry Performance Sales before ordering this cover for a non-LT4 Gen V engine.
Is a gasket included with this valley cover?
Texas Speed's product page does not list a gasket or hardware as included with the Gen 5 LT4 AFM delete valley cover, so plan on sourcing the valley cover gasket separately or confirm before ordering.
