SBC Intake Bolts HEX Head

The SBC Intake Bolts HEX Head from SPECTRE are precision fasteners engineered for small-block Chevrolet intake manifold installations. These bolts are essential for any engine builder, performance enthusiast, or mechanic working on carbureted or fuel-injected SBC platforms where securing the intake manifold to the cylinder head requires reliable, repeatable clamping force. Whether you're rebuilding a classic muscle car, tuning a street engine, or assembling a race motor, quality intake bolts are non-negotiable for preventing vacuum leaks and maintaining structural integrity under boost or high RPM loads.

SPECTRE's hex-head design delivers superior grip and ease of installation compared to slotted alternatives, reducing the risk of bit slippage during torque-down and ensuring consistent, even clamp loads across all fastening points. The hex configuration allows use of standard wrenches or sockets, simplifying the assembly process on crowded engine bays where access can be tight. These fasteners are manufactured to exacting tolerances to guarantee proper thread engagement and eliminate binding, critical when working with aluminum or ported intake manifolds where uneven torque can cause warping or stripped threads. The compact package—weighing 0.545 lbs and measuring 4.1 x 1.4 x 6.1 inches—makes for convenient storage and handling in any shop or home garage setup.

These intake bolts are ideal for small-block Chevrolet engines including 283, 302, 307, 327, 350, and 400 cubic inch variants, making them universally compatible across generations of SBC builds. Installation requires torquing in a sequential, crossing pattern—typically 15–25 ft-lbs depending on manifold material and head preparation—to ensure uniform pressure and prevent leaks. Whether you're performing routine maintenance, upgrading to a performance intake, or completing a full engine rebuild, having quality hex-head intake bolts on hand eliminates delays and guarantees a professional, air-tight seal that withstands years of street or track duty.