🔧 Enhance Performance & Security with the Edelbrock 8504 Intake Manifold Bolt Kit Review

Bolt and Spring Kits. The best aspect of these screws is the reduced hex head. The heads make it MUCH easier to get a socket on the middle two screws on either side, or at least that's what was done when rebuilding my son's SBC with an Edelbrock 2101 IM. Installing these bolts with a reduced head and thick washers solved the oil leakage problem we were having. Make sure you have the correct screws for your IM as I believe some of them require different lengths.

Aside from looking good, Chevy distributor bolts can be poorly spaced as the OEM design has the bolts around the pressure ports on the intake manifold placed and insert them more tightly than necessary. With factory headers or headers that support the throttle body, things can get pretty tight around the exhaust junction. The smaller hex provides space for included tools such as sockets, ring spanners and cranked torque adapters. Sockets might seem like a good idea, but large spreaders may…

Well built and a good addition. There is one caveat though: they were bundled for use with an intake manifold specifically designed for use with Chevy TBI heads. The four bolts on this manifold need to be half an inch longer as they only fit 1/8" threads. The four center bolts are "canted," meaning they enter at an angle. Heads. I had to reuse some of the original bolts, to get the correct torque, the first one removed a thin section of thread These are really good bolts but the fit suggested…