LS Performance Windage Tray for up to 4" Stroke

Vehicle: Pontiac GTO
$ 149


Improved Racing's performance aluminum windage tray for LS family engines is a direct bolt-on replacement for the factory tray in the Pontiac GTO and G8, Chevy SS and PPV that clears up to a 4" stroke and works with both factory studs and ARP studs.

These windage trays are 100% bolt-on compatible with factory LS oil pans. No need to grind, modify, or add spacers to your windage tray. No more oil starvation issues due to misaligned pickup tubes. Just bolt this on and everything will line up like factory!

Improved Racing has designed this windage tray to maximize oil drainage while optimizing windage control. Made from aluminum, it weighs less than half as much as the steel factory tray for a weight savings of approximately 1.4 lbs. Compatible with all of the oil pans listed below, no modifications necessary.

Features and Benefits

Clears all factory and aftermarket rods and crankshafts up to a 4" stroke
Compatible with many common LS oil pans, no modifications required; see application list below
Optimized to improve oil scavenging and windage control
Works with factory and ARP studs
More than 50% lighter than stock windage tray
Lifetime Warranty
Made in the USA


1x EGM-241 aluminum performance windage tray
10x locking flange nuts for factory studs (for ARP studs, use nuts provided by ARP)
9x reducing bushings for use with factory studs
Installation instructions




Fits engines with factory or aftermarket rods and crankshafts up to a 4.000” stroke.
CAD-verified to fit Gen III & IV LS & Vortec family engines with the oil pans listed in the table below.
Does NOT fit shallow skirt blocks such as the Dart LS Next engine.
EGM-241 may fit additional aftermarket oil pans if:
The aftermarket pan uses a dip stick tube that is compatible with any of the oil pans listed in the table below.
The aftermarket pan uses a pickup tube that is compatible with any of the oil pans listed in the table below.
If the aftermarket pan uses an aftermarket pickup tube, the pickup tube bolts to one of the main cap stud locations indicated in the figure below.
Check the dimensions above to verify that the aftermarket pan is deep enough to clear EGM-241. The shallowest part of the pan must be at least 1.5” deep when measured to the main caps.
Additional trimming may be required for interference-free installation with aftermarket oil pickup tubes.

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