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SBC 305 Pulley

SBC 305 Pulley

The 305 5.0L variant of the small-block Chevrolet introduced in 1975 had a displacement of 305 cu in (5 L) with a 3.736-inch (94.90 mm) bore, and 3.4803-inch (88.4 mm) stroke. Many performance enthusiasts have a marked resistance to performance upgrades on the 305 because of the high availability of 350 cu in (5.7 L) engines which have considerably more power potential due to the larger displacement and greater selection of high-flow aftermarket cylinder heads. Most cylinder heads with large valves have bore interference or shrouding issues with the narrow bore of the 305 engine, which reduces intake port flow and thus reduces the ability to make power. Induction systems for the 305 included carburetors (both 2 and 4-barrel), throttle-body injection (TBI), tuned-port fuel injection (TPI), and sequential fuel injection (GM Vortec).
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