AFM Delete Kit, 2004 & Up GEN IV 5.3L LS Engines
Chevy LS V8
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The difference between an LS Truck or SUV engine and a fire breathing Corvette is a lot less than you think! Upgrading the camshaft on the GM LS engine is one of the most cost effective ways to add power, as most other engine components are similar between the different performance levels of LS engines.
It’s likely your Generation IV 5.3 (LY5, LC9, LH6, LMG, LS4) came from the factory with a Active Fuel Management or Displacement on Demand (AFM, DOD, etc.) system, which disables the cylinders when not under load or the vehicle is coasting to meet strict EPA emission requirements.
Specific cams are built for these economy AFM engines that significantly reduce power. Replacement aftermarket and performance OE cams are not compatible with these shut down lifters. This all-in-one AFM Delete Kit from Speedway Motors compiles OEM GM and trusted aftermarket suppliers to retrofit your AFM LS engine to full 8 cylinder operation by replacing the lifters. Reprograming of the factory ECU will be required to remove AFM, or an aftermarket ECU.
This is the most economical AFM Delete Kit on the market!
As this kit is aimed to decrease emissions by removing the cylinder shut down function, it is not C.A.R.B. compliant and not for sale in California or emission tested vehicles.
Don’t forget to pick up a three bolt cam gear, (355-12586481) as most aftermarket and Non-AFM camshafts are three bolts instead of one.
- For engines 2004 and up that have two lengths of headbolts
- Fits 5.3 engines (3.91” max bore headgaskets)
- Not for sale in California
AFM Delete Kit contains:
- 16 LS7 style lifters
- 4 lifter trays
- 2 Headgaskets
- Timing cover gasket
- Front main seal
- Water pump gaskets
- Torque to yield head bolts
- Torque to yield balancer bolt
- L92 Ls valley cover
- Valley cover gasket
- LS timing chain dampener
What's In The Kit
Chevrolet Performance Parts 12498544 LS1/LS6 Cylinder Head GasketPart # 35512498544Qty x 1
Fel-Pro TCS45993 Chevy LS Timing Cover GasketsPart # 344TCS45993Qty x 1
TTY Headbolts, 04 & Up LS EnginesPart # 91017800568Qty x 1
Chevrolet Performance Parts 12557840 Harmonic Balancer BoltsPart # 35512557840Qty x 1
LS7 Lifter TrayPart # 91012595365Qty x 4
LS7 Roller Lifters, Set/8Part # 91012499225Qty x 2
Chevrolet Performance Parts 12598832 LS2/3/7 Engine Valley CoversPart # 35512598832Qty x 1
Chevrolet Performance Parts 12588670 Timing Chain DampenersPart # 35512588670Qty x 1
Q & A
What happens when you advance or retard a camshaft? In this tech article, we explain the pros and cons of installing your cam straight up, advancing or retarding.
Learn the basics to engine performance like; how does a cam work? What is Valve lift, duration, lobe separation angle, and cam profiles? Afterwords selecting the right camshaft will be less of a guessing game!
One of the most important parts of your racing operation is the engine. This article gives a detailed overview on how to maintain your engine to get the most out of it for as long as possible. Also learn some tips to prolong the life of your engine.
Tim M. has tried to stay true to the vintage route, but sometimes, exceptions must be made. For example, the original oiling system's paper element and canister are functional, but an upgraded system will be more reliable.
Speedway Motors Street Tech Kevin recently installed a Gear Drive on the 454 destined for his '54 Belair.
To get the longest life and most performance out of your engine, it's important to have the valve lash set correctly. Here we show you how to set valve lash on a small block Chevy using a hydraulic lift camshaft.
In part 2, you will read about the Generation 4 small block series of V8s that share the same platform as the Generation 3 discussed in part 1.