NEW PRODUCT RELEASE Holley Hi - Ram EFI intake manifolds are now available for 1955 - 86 Gen 1 s mall - b lock Chevy engines. The 300 - 950 is the traditional Hi - Ram EFI intake manifold layout with a 105mm LS Gen IV type throttle body flange.

The 300 - 951 is a hood - height friendly 95mm front - feed plenum Hi - Ram variation , which is an updated and modern replacement for the Holley Stealth - Ram intake manifold. These new Holley Hi - Ram intake manifolds provide 21st c entury performance for the iconic s mall - block Chevy engine.

The Holley SBC Hi - Ram is next the successful line of Hi - Ram EFI intake manifolds which was first offered for the GM Gen IV LS3 engine. Fuel rail kits are provided and have mounting for both long and short type fuel injectors. Holley Hi - Ram intake manifolds offer the performance potential and the appearance of professionally prepared billet and fabric ated racing intake manifolds at the affordable price of a cast - aluminum product.

300 - 950 is of standard Hi - Ram configuration with a “top - feed” plenum and a plenum top designed to accept up to an 105mm Gen IV LS 4 - bolt throttle body, including drive - by - wire throttle bodies. 300 - 951 is a hood - height friendly Hi - Ram variation which has a “front - feed” plenum and a forward - facing throttle body flange which accepts an up to 95mm LS 4 - bolt throttle body, also, including DBW throttle bodies. 300 - 951 is an upgrade replacement for the Holley/Weiand Stealth - Ram intake manifold which was a popular manifold used to significantly improve the performance of 1985 - 92 GM 5.7L TPI fuel injected engines. 300 - 951 installs under the OE hood for Gen 1, 2, & 3 Camaros and Firebirds.