Out of stock
SKU: STT346-2004
MPN: 346-2004
The Cam Change Gasket & Bolt Kit LS3 4in + Bore (MPN 346-2004) packages the sealing components and hardware a builder needs when pulling and replacing a camshaft on a GM LS3 platform with a 4-inch or larger cylinder bore. It's aimed at engine builders and LS swappers who want the right front cover and timing-related seals on hand before the cam comes out, rather than chasing individual parts mid-job. Bundling the gaskets and bolts together keeps the reassembly clean and avoids reusing tired hardware. You can browse the full gaskets and seals selection for related LS-specific items.
A cam change on an LS3 disturbs the front cover and timing area, so the gaskets and bolts in this kit are matched to that work. The kit is sized for engines running a 4-inch bore and up, which covers the factory 4.065-inch LS3 bore and common over-bored builds. Using fresh hardware on reassembly matters here, since torque-to-yield and one-time-use fasteners lose clamping accuracy after a cycle. Pairing this set with a dedicated GM LS3 gasket or an LS valve seal kit rounds out a top-end and timing refresh in one order, so the engine goes back together with everything new in the sealing path.
Reach for this kit when you're upgrading a cam profile, freshening a high-mileage LS3, or finishing an LS swap and want the timing area sealed correctly the first time. It belongs on the bench alongside your cam, lifters, and timing components before teardown begins so the rebuild doesn't stall waiting on a single gasket or bolt. If you're sourcing parts for a broader LS build, the Gen 4 LS gasket kit and our wider gasket and seal categories carry the supporting pieces. Order what fits your bore and build, and keep the spares for the next project.
It's built for the GM LS3 platform running a 4-inch or larger cylinder bore. That covers the factory LS3 bore as well as common over-bored builds based on the LS3 architecture. Confirm your block's bore size before ordering to make sure the sealing components match your application.
The kit packages the gaskets and bolts associated with a camshaft change on an LS3, covering the front cover and timing-related sealing path. Having the gaskets and hardware bundled together lets you complete a cam swap without sourcing individual fasteners and seals separately.
Fresh hardware is the safer route. Many timing and cover fasteners lose clamping accuracy after their first torque cycle, especially torque-to-yield types. This kit includes new bolts so you can reassemble with hardware that holds proper clamp load.
Yes. The kit is specified for 4-inch bore and larger, so it suits both the stock LS3 bore and engines that have been bored out within that range. Verify your final bore diameter against your build sheet before installation.
WARNING ⚠️ You must be 18 or older to purchase shotgun or rifle ammunition and 21 or older to purchase handgun ammunition and firearms. Please reference our requirements for ammunition orders to "restricted" states HERE. Always make sure you use the correct ammunition for your firearms. Ammo cannot be shipped to a PO Box. Please reference state & local laws before making a firearm or ammunition purchase.
