12499529 350 Crate Engine 290 HP HO 12499529 Description Our lowest priced Performance crate engine.   Quite simply, the 290 HP 350-cubic-inch is the best small-block crate engine value offered by GMPP! With 290 horsepower and 326 lb.-ft. of torque, it makes a great replacement engine for countless GM vehicles, while its all-new construction provides peace of mind over salvage and rebuilt engines. The 290 HP is packed with good stuff, too, starting with the four-bolt-main block, aluminum pistons, and a hydraulic camshaft. The durable iron cylinder heads process healthy amounts of air to deliver strong torque across the rpm range and great mid-range horsepower. Delivered as a long block assembly, you add items like an intake manifold, carburetor, ignition system, starter, balancer and water pump—all available from GMPP. Build it up to suit your needs, as the economical 290 HP will leave plenty of change on the table! Our lowest priced crate engine. This HP 290/350 is the best value crate engine from GM Performance Parts, with 290 horsepower @ 5100 RPM, and 326 lb-ft. of torque @ 3750 RPM on 87 octane fuel. The HP 290 horsepower will provide great durability because of its 4-bolt mains, PM steel rods, strong cast aluminum pistons. The camshaft has .450" intake and .460" exhaust lift with hydraulic flat tappets. The cast iron cylinder heads have 1.94" intake and 1.50" exhaust valves wit 76 cc combustion chamber. These heads have the conventional 90 degree with 12 bolt intake manifold attaching design used from 1955 thru late 1980 12 bolt postion @ 90° to the intake/headflange. This engine was designed to work with the following components: intake manifold 10185063. HEI distributor 93440806. balancer 12551537. flex plate 471529. Bolt on the starter,water pump, fuel pump, and your ready to run. This 350 engine is not intended for marine use, and should be used in 1979 and earlier pre-emissions street vehicles or any off road usage. 12486041    12486041 - 350 HO Crate Engine   The 330 horsepower 350 HO doesn't sacrifice power or durability, it just pumps up the value. With its 4-bolt main block, nodular iron crankshaft, forged steel connecting rods and light but strong cast aluminum pistons, this engine screams durability. Add to the strong foundation a pair of 64cc Vortec cast iron cylinder heads and a dual pattern camshaft with just a bit of a "lumpy" idle, and you've got the muscle car small block that you've been looking for. Dressed to impress with chrome valve covers and front timing cover, this engine will look great between the fenders of your favorite street rod, muscle car or grass roots racer. The cylinder heads on this great little performer use 1.94" intake and 1.50" exhaust valves that are sprung with L31 valve springs. The 64cc chambers yield a healthy, yet streetable 9.1 to 1 compression ratio. The cam is a modern dual pattern interpretation of the old '65 to '67 corvette 327 cam. But with more lift and duration on the exhaust side, it does a better job of clearing exhaust from the combustion chamber. We also decreased the duration and lift ever so slightly on the intake side to build more cylinder pressure. The result is a cam that makes great torque and horsepower with the 350 HO's 9.1 to 1 compression ratio. Add the new dual plane intake manifold GM# 12366573, 600-650 cfm carburetor, HEI distributor, balancer, water pump and exhaust manifold or a pair of headers and you have an outstanding muscle motor with a broad, smooth torque curve and an honest 330 horsepower. This manifold has four bolts, not six, to attach it to the cylinder head. Older six-bolt manifolds will not fit the new Vortec heads. The 350 HO is not intended for marine use, and should only be used in 1979 and earlier pre-emissions street vehicles or any year off road vehicles. Technical Notes: Engine ID code is CC. Requires a counterweighted flywheel or flexplate, (GM Part#'s 10105832, 14088646, 14088650, 14088765, or 14088767). Requires either a 6.75" (GM# 6272221) or 8" (GM#12551947) harmonic balancer. Oil dipstick located on right side (passenger's). 650 cfm carb recommended. Chrome valve cover's and timing cover included. Intake manifold, distributor, flywheel, harmonic balancer, water pump, and exhaust manifolds are not included. 12496968     330HP / 350 Deluxe GM Performance Parts Crate Engine Assembly  Part # 12496968 The 350 HO Deluxe takes the value leading 350 HO a step further by adding carburetor, distributor, water pump, torsional damper, and auto trans flexplate. This enhancement to the Vortec cylinder head 330 horsepower 350 HO makes it easier than ever to repower your street rod, street machine or sportsman racer. The 600 cfm vacuum secondary Holley carburetor is ideally suited to the 350 HO. And the proven GM HEI distributor will give years of worry-free driving. With a 9.1 to 1 compression ratio, it’s pump gas friendly, and with its muscle car idle it’s cruise night cool. With GMPP’s lowest priced small-block crate engine there is no reason to rebuild that junk yard clunker and since it’s complete from carb to pan there is no need to chase parts. Talk to your GM Performance Parts Authorized Dealer about any additional required parts to complete your re-power project. This engine is perfect for your 1975 or older vehicle or any off-road usage. Manufacturer:   GM Performance Parts Horsepower :   330 hp @ 5000 rpm Torque :   380 ft lbs. @ 3800 rpm Compression Ratio :   9.1 to 1 Block :   Cast iron 4-Bolt, 4.000" Bore Crankshaft :   Cast Nodular, 3.480" Stroke Heads, Chamber Size :   Vortec, 64cc Valves (I/E) :   1.940"/1.600" Camshaft, Lift (I/E) :   0.435"/0.460", Hydraulic Dur. @ 0.050" (I/E) :   212/222 degrees Intake :   Aluminum Dual Plane 24502609 24502609 - ZZ4 Crate Engine, 355HP "Best Seller"   Imagine an aluminum head small block that makes 355 horsepower. What if it had a street roller camshaft, 4-bolt main block, 1053 forged steel crankshaft, high silicon pistons and strong PM connecting rods ? We imagined it, and then engineered, developed, tested and built it. The ZZ4 is the evolution of our popular ZZ series of small blocks that power thousands of street rods, hot street cars, circle track racers and drag racers. With over 400 Ft-Lbs of torque, the ZZ4 is the best way to put an aluminum head, roller cam, high performance small block between your favorite fenders. The aluminum angle plug cylinder heads have screw in rocker studs, 1.94" intake and 1.50" exhaust valves and 58cc combustion chambers that yield a crisp and responsive 10 to 1 compression ratio. Also included are our lightweight valve spring retainers that weigh half as much as our previous design. The valve seats are radiused and we have included valve stem seals to help keep the oil where it belongs. To compliment the cylinder head design, we've incorporated a steel roller tappet camshaft with .474" intake and .510" exhaust valve lift. The combination makes 355 horsepower at 5250 rpm and has that great sounding muscle car idle, with just enough lope to let people know this is no station wagon engine. Also included with the ZZ4 is an HEI distributor with an ignition timing advance curve developed for performance, a dual plane aluminum intake manifold that accepts your spread bore or square bore carburetor, an 8" high-rpm harmonic balancer, 12.75" automatic trans flex plate and a cast iron water pump. It even has the spark plugs in it! The ZZ4 is currently our most popular crate engine, and you can see why. With a long history of successes in circle track and drag racing as well as street rods and other performance applications, the ZZ4 may just be the bullet for your next project. The ZZ4 is not intended for marine use, and should only be used in 1973 and earlier pre-emissions street vehicles or any year off road vehicle. Technical Notes: Carb, plug wires, starter, oil filter and oil filter adapter, and exhaust manifolds not included. Manufacturer:   GM Performance Parts Horsepower :   330 hp @ 5000 rpm Torque :   380 ft lbs. @ 3800 rpm Compression Ratio :   9.1 to 1 Block :   Cast iron 4-Bolt, 4.000" Bore Crankshaft :   Cast Nodular, 3.480" Stroke Heads, Chamber Size :   Vortec, 64cc Valves (I/E) :   1.940"/1.600" Camshaft, Lift (I/E) :   0.435"/0.460", Hydraulic Dur. @ 0.050" (I/E) :   212/222 degrees Intake :   Aluminum Dual Plane 12496769 FastBurn 385 Crate Engine 350CI/385HP with Aluminum Vortec Heads Part #12496769    With more ZZZ through ZZ4 crate engines sold over the years than any other high performance crate engine, it only makes sense that GMPP would continue to improve that successful family of engines. The new Fast Burn 385 uses the proven ZZ4 shortblock and ads to it the Fast Burn aluminum cylinder heads for 385 value packed horsepower. With value in mind, the Fast Burn 385 uses stamped steel rocker arms and the same ZZ4 camshaft that powers thousands of hot rods. The Fast Burn 385 is an excellent choice for the basis of a custom engine. Its strong forged steel crankshaft and forged powdered metal connecting rods have been proven to 500 horsepower. And its Fast Burn cylinder heads are hungry for a little more cam. 430 horsepower at 6000 RPM is achievable by adding the HOT cam and 1.6 ratio self aligning rocker arms. Value priced small-block power, great durability, easy power upgrades. It's all that and more from the "More Than Just Power" people at GMPP. The Fast Burn 385 is not intended for marine use, and should only be used in 1973 and earlier pre-emissions street vehicles or any year off road vehicle.