
GM 350ci/290 SBC V8 Base Crate Engine
This product is no longer available. Please call customer service for assistance at 1-800-345-4545.
Recommended items not included:
- Carburetor: 809-19170092
- Intake Bolts: 555-83200
- Intake Gaskets: 809-10147994
- Use a neutral balance harmonic damper
- Use an internally balanced flexplate for automatic transmission or flywheel for manual transmission (not included)
- Power ratings based on tests with Holley 670-cfm carburetor (not included)
- Does not accept Chevrolet Performance roller lifter assemblies
- Designed for pre-1976 street vehicles or any off-road vehicle
- Not intended for marine applications
- Pre-1986-style 2-piece rear main seal block
- Recommended for use in vehicles with 6,000-lb GVWR or less
Engine Break-In Procedure
Use conventional or break-in oil (non-synthetic) for the first oil change, be sure to check the oil level in the engine and prime the oil system with an engine priming tool.
Engines with flat tappet hydraulic cams only - Run the engine between 2,000 and 2,500 RPM's, with no-load on the engine for the first 30 minutes. This is critical to break in the camshaft.
Drive the vehicle with varying speeds and loads on the engine for the first 30 miles. Be sure not to use a lot of throttle or high RPM. Run five or six medium-throttle accelerations to about 3000 RPM (40 to 50 MPH), then letting off in gear and coasting back down to 20 MPH. Run a couple of hard throttle accelerations up to about 5000 RPM (55 to 60 MPH), then letting off in gear and coasting back down to 20 MPH.
Let the engine cool and change the oil and filter using conventional (non-synthetic) oil and check coolant level, top off if necessary. Drive the next 500 miles normally, without high RPM's (below 5000 RPM), hard use, or extended periods of high loading. Change the oil and oil filter again using conventional (non-synthetic) oil. Keep an eye on oil level during the first thousand or so miles.
It would be suitable to use synthetic motor oil after the second recommended oil change and mileage accumulation.
Forget the rebuild - You are looking at the best crate engine value!
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The Chevrolet Performance 350/290 Base is the most popular GM Performance Parts crate engine because no one can deliver such performance for this kind of value. GM Performance Parts believes that everyone should be able to afford a high quality, high performance GM V-8 without going broke. The 350/290 Base is an answer to those car crafters who demand maximum return on their money. However, just because it's affordable, don't think that it's a stone. The 350/290 delivers 308 hp @ 5100 rpm and a solid 347 lb.-ft. of torque at 3900 rpm. With those kinds of numbers, it's the perfect replacement engine for the millions of GM vehicles that shipped with a small-block. Got a tired, old project car that needs a lift? This is the crate engine for you!
350/290 BASE TECH SPECS:
- Engine Type: Chevy Small-Block V-8
- Displacement: 350ci
- Bore x Stroke: 4.000'' x 3.480''
- Block: Cast-iron with four-bolt main caps
- Crankshaft: Nodular iron
- Connecting Rods: Powdered metal steel
- Pistons: Cast-aluminum
- Camshaft Type: Hydraulic flat tappet
- Camshaft Lift: .450'' intake / .460'' exhaust
- Camshaft Duration (@.050 in.): 222° intake / 222° exhaust
- Cylinder Heads: Cast Iron; 76cc combustion chambers
- Valve Size: 1.94'' intake / 1.50'' exhaust
- Compression Ratio: 8.0:1
- Rocker Arms: Stamped steel
- Rocker Arm Ratio: 1.5:1
- Recommended Fuel: 87 octane
- Ignition Timing: 34° Total @ 4000 rpm
- Maximum Recommended rpm: 5100
- Balanced: Internal
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