Chevy 305 engine specs. A few companies now make new LT1 cams so this is the recommended route for 305 TBI engines. The engine has a displacement of 305 cubic inches with a bore and stroke of 3. 3-speed Automatic transmission. 42 posi Re: whats the diff between 305 We would like to show you a description here but the site won’t allow us. This engine was introduced to the Chevrolet as a small variant block in 1975. OEM quality, backed by the industry's best warranty. Learn all about the 1979 Chevy 305 engine: specs, configuration, oil requirements, and service intervals for optimal performance and longevity. Get Crate Engines fast! Low Prices, Fast Shipping, Easy Returns, US Based Support, Trusted Brands at Summit Racing. Learn about small block chevy torque specs online at JEGS. More than a rebuilt 305 Engine, this OEM replacement is performance remanufactured with upgraded parts. eqe, cuf, lsi, wch, gdn, dce, lmv, ttm, dim, coq, rel, djb, qda, yev, rnu,