Chevrolet Performance 19434646 LS3 Long Block Gen IV 480 HP

New LS long blocks from Chevrolet Performance offer builders all the performance capabilities of the complete crate engines, but at a lower cost and with fewer components, for those who want to finish off their engine with their own intake manifold and other accessories. Three new long-block assemblies are available:

Mixing the LS3 with the race-bred LS Hot Cam (with .525-in. lift) increases output to 495 hp and 473 lb-ft., when used with the production LS3 intake manifold assembly.

Each new long-block assembly is delivered without the intake manifold, throttle body, fuel rail, injectors, exhaust manifold, or other accessories. Mix and match the parts to take your LS performance engine to the next level.

• Chevrolet Performance’s new LS long blocks offer comparable performance to complete crate engines, with cost savings and greater customization potential.
• Three distinct long-block assemblies available, catering to those seeking personalized engine configurations.
• Combining LS3 with the high-performance LS Hot Cam (.525-in. lift) results in a potent output of 495 hp and 473 lb-ft of torque.
• The LS3 and LS Hot Cam blend achieves enhanced performance when paired with the LS3 intake manifold assembly.
• Long-block packages are intentionally devoid of intake manifold, throttle body, fuel rail, injectors, exhaust manifold, and accessories, enabling flexibility in part selection to elevate LS performance to new heights.