Page 25 of 2009 Performance Parts by GM Parts Direct

crate engines small-block ram jet 350 12499120 with calibrated controller wiring harness crate engines small-block vintage mechanical injection look classic style with a modern twist fuel injection isn t a modern invention chevrolet introduced it on the small-block in 1957 when it was a technology leader in bel airs and corvettes through the early 1960s fifty years later gm performance parts offers the ram jet 350 which combines the classic look of the original mechanical-type injection system with the dependability and optimized performance of contemporary port fuel injection similar in design to modern port-injected engines on production vehicles the ram jet 350 is electronically controlled and delivers crisp throttle response tuning-free dependability and surprising efficiency the ram jet 350 s induction system was developed to the same standards as gm production engines and it uses the latest-generation mefi 4 controller the rest of the engine combination includes vortec iron heads a hydraulic roller camshaft and a pump gas-friendly 9.4:1 compression ratio gm performance parts delivers the ram jet 350 with the controller wiring harness and detailed installation instructions it can be installed in any 1976-or-earlier vehicle that was originally equipped with a carburetor and with a height of only 9.75-inches from the base of the intake manifold to the top of the plenum it ll fit in most vehicles without hood modifications modern performance reliability for 1976-and-earlier vehicles installation notes · comes with externally balanced manual transmission flywheel change to externally balanced flexplate for automatic transmission applications see chart on page 175 · installer to supply 12-volt power source and fuel · see instructions for fuel pump recommendation · designed for pre-1976 street vehicles or any off-road vehicle · not intended for marine applications · important for a safe proper and troublefree engine break-in the mefi 4 computer has a green mode that controls rpm during the break-in period from start-up to the end of the first hour is 4000 rpm the second hour is 4500 rpm and the third hour is 5500 rpm ram jet 350 dyno chart possible applications update your favorite corvette round out any hot rod that needs a little something under the hood use it to start a conversation on friday night applications have not been validated they are merely suggestions of how you might enjoy your gm performance parts crate engine some applications may affect engine warranty see page 352 for specific warranty information some applications may not be emission-legal check state and local ordinances ram jet 350 tech specs part number engine type displacement cu in bore x stroke in block crankshaft p/n 10243068 connecting rods p/n 10108688 pistons p/n 88894280 camshaft type p/n 14097395 camshaft lift in 12499120 chevy small-block v-8 350 4.00 x 3.48 cast iron with 2-bolt main caps cast-iron powdered metal steel hypereutectic aluminum hydraulic roller .431 intake .451 exhaust camshaft duration 050 in cylinder heads p/n 12558060 valve size in compression ratio rocker arms p/n 12367346 rocker arm ratio recommended fuel ignition timing maximum recommended rpm balanced 196° intake 206° exhaust vortec iron 64cc chambers 1.94 intake 1.50 exhaust 9.4:1 aluminum roller style 1.6:1 92 octane base 10° btdc 32° total 5500 external note distributor with melonized steel gear must be used with long blocks and partial engines with steel camshafts or engine damage will occur available for purchase online at gmperformanceparts.com gm performance parts crate engines include a 24-month or 50,000-mile/80,000-kilometer limited warranty gm performance parts does not utilize any used or remanufactured parts in this crate engine for a complete list of parts to complement and finish this engine turn to page 56 buy online at www.gmperformanceparts.com 47 46 buy online at www.gmperformanceparts.com

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