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GM Performance 12499529 Small Block Chevy 350/290 Long Block Engine

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Specs
MFG. Part #:
12499529
Rear Main Seal Style:
2-piece
Camshaft Type:
Hydraulic Flat Tappet
Piston Material:
Cast Aluminum
Crankshaft Material:
Cast Iron
Connecting Rod Material:
Powdered Metal
Engine Displacement:
350
Horsepower:
290
Torque:
326
Warranty:
2 year/50,000 mile
Cylinder Head Material:
Cast Iron
Crate Engine Type:
Long Block
Maximum RPM:
5100
GM Performance 12499529 Small Block Chevy 350/290 Long Block EngineGM Performance 12499529 Small Block Chevy 350/290 Long Block Engine
GM Performance 12499529 Small Block Chevy 350/290 Long Block Engine

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What's in the Box

Drop some performance into your Street Rod, Muscle Car or Truck with these genuine GM Performance engines! All GM Performance engines include a 24 Month 50,000 mile warranty. GM Performance Parts believes that everyone should be able to afford a high quality GM V-8 without going broke. The 350/290 is an answer to those car crafters who demand maximum return on their money. But, just because it's affordable, dont think that it's a stone. The 350/290 delivers 290 hp @ 5100 rpm and a solid 326 lb.-ft. of torque at 3750 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 Chevy that needs a lift? This is the crate engine for you. It is loaded with a four-bolt main bearing block, aluminum pistons, and a hydraulic camshaft. The cast iron cylinder heads are designed to be extremely durable while still providing good airflow through the engine. The 350/290 will ship to you as a Base-level long block. Add an intake manifold, carburetor, ignition system, starter, balancer, and water pump, and you'll be ready to hit the road with a fresh new motor.

  • Economical power
  • Four-bolt block
  • 290 hp @ 5100 rpm
  • 326 lb.-ft. of torque at 3750 rpm
  • 4.00" x 3.48" Bore x Stroke
  • 8.5:1 compression ratio
  • 87 Octane recommended fuel
  • 4-bolt main caps
  • Provisions for both RH and LH oil dipstick
  • Contain a 2-piece rear main seal
  • .450" intake / .460" exhaust - cam lift
  • Cam duration @ .050": 222° intake / 222° exhaust
  • 112° lobe separation
  • .194" intake / 1.50" exhaust valves
  • 1.5:1 ratio rocker arms
  • Add an intake manifold, carburetor, ignition system, starter, balancer, and water pump
  • The best value crate engine in the GM Performance Parts lineup

Includes:

  • Fully assembled long block
  • Stamped steel OE valve covers
  • Oil pump, pick-up, and oil pan
  • Front timing cover
  • 6" and 8" timing pointers for use with 2:00 mark balancers

Note: Block is drilled for either side oil dipsticks.  Plugs are included to seal unused tube hole.

 

Application

Possible Applications -

  • Replace that tired old small-block that has served you well for years
  • Finish your first Hot Rod
  • A temporary stand-in while you build your dream engine
  • An engine for that father/son project out in the garage 
  • Best for use with stock Small Block Chevy vehicles 

*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. Some applications may not be emission legal; check state and local ordinances."

Item Details

Warning: Not Intended For Marine Use

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BluePrint Budget 350 Crate Engine
(Part #91532355)
                        
  • 325 hp @ 5400 rpm
  • 360 ft.-lbs. @ 3900 rpm
  • 4-bolt main, 1-piece rear main seal
  • Passenger side dipstick
  • Align honed main bearing bore
  • Cylinders honed on computer controlled machine to within .0002 straightness and roundness
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(Part #35519258602)
                        
Competitive and durable racing power at an economical price!
 
Designed for circle track's weekend warriors, this bullet-proof 350-horsepower, 350-cubic-inch factory-sealed racing engine is a tough combination of power and reliability –and it fits almost any racing budget.
 
Based on GM Performance Parts' popular 350 HO engine, including a brand-new, four-bolt-main block, 9:1 hypereutectic pistons, cast iron crankshaft and GM iron Vortec cylinder heads, the 350/350 Factory Stock version features a high-rise dual-plane intake manifold, 8-quart single kick-out circle track oil pan, valve cover kit with breather tube and breather, and special "kool nut" rocker arm nut design.  The 350 HO's unique dual-pattern cam is included, too. It's based on the one found in 1965-67 Corvette 327 engines, but with more lift and duration to clear the engine exhaust quickly and move in more air –providing excellent mid- and high-range power, where you need it on the track.
 
Delivered complete from the oil pan to the intake manifold –including an HEI distributor –the 350/350 racing engine has the proven parts and horsepower to enable a competitive racecar. Getting it into the winner's circle, however, is your job!
  • Track-tested durability
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  • Best horsepower value around
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Specifications:

  • 350 HP @ 5000 RPM, 390 ft. lbs. of torque @ 3800 RPM
  • Bore x Stroke: 4.00” x 3.48”
  • Compression Ratio: 9.1:1
  • 92 Octane recommended fuel
  • Cast Iron, 4-bolt main caps
  • Cam Lift: .435” Intake / .460” exhaust
  • Cam Duration @ .050”: 212 deg. Intake / 222 deg. Exhaust
  • Lobe Separation: 112.5 Degree
  • .194” Intake/ 1.50” Exhaust valves
  • Stamped Steel, 1.5:1 Ratio rocker arms
Includes:
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  • HEI Distributor
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GM Performance Parts Racing Crate Engines are excluded from the limited warranty.
 
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(Part #35519210009)
                        

Drop some performance into your Street Rod, Muscle Car or Truck with these genuine GM Performance engines! All GM Performance engines include a 24 Month 50,000 mile warranty. These 350 HO Turn-Key crate engines are packed with all the features you need to get a reliable 330 horsepower and 380 lb.-ft. of torque from a dependable, time-tested combination of GM Performance Parts. Of course, all of the components used in this engine are brand new – not remanufactured parts.  The 350 HO Turn-Key is a great choice for your small-block crate engine needs, based on a tough, Chevy four-bolt block that holds a strong nodular iron crankshaft, good rods, and aluminum pistons. The high-lift camshaft gives the engine its own unique, aggressive idle. The cam is based on the same one found in 1965-67 Corvette 327 engines, but it has even more lift and duration. Complete from top to bottom, the 350 HO comes pre-assembled with the intake manifold, carburetor, water pump, and distributor. With the Turn-Key trim level, you also get everything you need for a complete, running engine right out of the crate. We ship it with an accessory drive package, fuel pump, starter, and spark plug wires included in the package (not installed). The 350 HO Turn-Key crate engine offers you an incredible performance value – all you need to do is add the fuel and enjoy!

  • Complete from top to bottom
  • Four-bolt block
  • 330 HP @ 5000 RPM
  • 380 ft.lbs. of torque @ 3800 RPM
  • 4.00" x 3.48" bore x stroke
  • 9.1:1 compression
  • 92 octane recommended fuel
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Includes:

  • Fully assembled long block
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GM Performance 19210007 Small Block Chevy 350/330 HP Long Block Engine
(Part #35519210007)
                        

Drop some performance into your Street Rod, Muscle Car or Truck with these genuine GM Performance engines! All GM Performance engines include a 24 Month 50,000 mile warranty. Chevrolet's entry level performance crate engines come in the form of these 350 cubic inch HO motors with approximately 9.1:1 compression, 330 horsepower at 5,000 rpm and 380 ft./lbs. of torque at 3,800 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 Chevy that needs a lift? This is the crate engine for you. It is loaded with a 4-bolt main 1-piece rear main seal block, nodular cast iron crankshaft, powdered metal connecting rods, and dished cast aluminum pistons. Installed camshafts are hydraulic flat tappet with .435 in. intake lift and .460 in exhaust lift with 212 degree open duration intake and 222 degree open duration exhaust lobes at .050 in. ground with a 112.5 lobe centerline. Standard Morse link timing chains are installed. Cylinder heads are Vortec cast iron style with 64cc chambers; 170cc intake runners with 1.94 in. intake valves and 1.50 in. exhaust valves. Stamped steel self-aligning rocker arms are used for reliability.

  • 9.1:1 compression, 330 horsepower at 5,000 rpm and 380 ft./lbs. of torque at 3,800 rpm
  • 4-bolt main 1-piece rear main seal block, nodular cast iron crankshaft, powdered metal connecting rods, and dished cast aluminum pistons
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  • 92 octane recommended fuel
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Includes:
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Drop some performance into your Street Rod, Muscle Car or Truck with these genuine GM Performance engines! All GM Performance engines include a 24 Month 50,000 mile warranty.  Like the 350 HO Turn-Key crate engine, the 350 HO Deluxe is rated at 330 horsepower and 380 lb-ft of torque. The intake manifold, carburetor and distributor are included, but not installed.

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Includes:

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(Part #35519244450)
                        

Drop some performance into your Street Rod, Muscle Car or Truck with these genuine GM Performance engines! All GM Performance engines include a 24 Month 50,000 mile warranty.  These best-selling crate engines are now offered in a new Deluxe package that includes (but not installed) an intake manifold, chrome valve covers, chrome air cleaner, chrome timing chain cover, chrome breather cap, along with the necessary hardware , gaskets and installation instructions. The manifold is a high-flow aluminum intake, along with the gaskets and installation hardware. The chrome dress-up parts add a bright, finishing touch to the 350/290 HP.

Note:  GMPP utilized a Holley 670-cfm carburetor (not included and must be purchased separately, please see suggested carbs below for consideration) to achieve the rated power levels of 290 horsepower at 5,250 rpm and 332 lb.-ft. of torque at 3,750 rpm.  

It features four-bolt mains for strength and it’s filled with premium parts, including a smooth hydraulic camshaft and durable aluminum pistons that deliver an 8.5:1 compression ratio—making it a great, time-saving alternative to rebuilding a tired, two-bolt-main core engine.

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  • Provisions for both RH and LH oil dipsticks
  • Contain a 2-piece rear main seal
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  • Exhaust lift - .460" exhaust duration @ .050" 222
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