Part #:12499711
Price:$4,889
Installation Notes
- Comes with counterweighted flexplate for automatic transmission; requires counterweight flywheel for manual transmission.
- Has right-side oil dipstick.
- Intended for pre-1977 street vehicles and all off-road vehicles.
- Not intended for marine applications.
- Requires fuel line from fuel pump to carburetor.
- Fuel pump pressure is pre-set, fuel pressure regulator not required.
- Some assembly required.
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350 HO Turn-Key - A 350 that’s been stepped up in power
You won’t go broke finishing off your project car with a GM Performance Parts 350 HO Turn-Key crate engine! It’s 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 GM Performance components used in this engine are brand new—not remanufactured parts like the competition is trying to sell you. Designed by our in-house engineers to give you maximum return for your hot rod dollar, the GM Performance 350 HO Turn-Key is a great choice for your small-block crate engine needs.
The 350 HO is based on a tough, Chevy four-bolt crate engine 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 Chevy crate engine offers you an incredible performance value—all you need
to do is add the fuel and enjoy!
Possible Applications*
- Replace that V-6 with some all-American V-8 muscle
- Restore your musclecar with a little bit more than stock
*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 specific warranty information. Some applications may not be emission legal; check state and local ordinances.
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| 350 HO TECH SPECS: |
| Part Number: | 12499711 |
| Engine type: | Chevy small-block V-8 |
| Displacement (cu in): | 350 |
| Bore x stroke (in): | 4.00 x 3.48 |
| Block (P/N 10105123)): | Cast iron with 4-bolt main caps |
| Crankshaft (P/N 14088526): | Nodular iron |
| Connecting rods (P/N 10108688): | Powdered metal steel |
| Pistons (P/N 12514101): | Cast aluminum |
| Camshaft type (P/N 24502476): | Hydraulic flat tappet |
| Camshaft lift (in): | .435 intake / .460 exhaust |
| Camshaft duration (@.050 in): | 212'c1 intake / 222'c1 exhaust |
| Cylinder heads (P/N 12558060): | Vortec iron; 64 cc chambers |
| Valve size (in): | 1.94 intake / 1.50 exhaust |
| Compression ratio: | 9.1:1 |
| Rocker arms (P/N 10089648): | Stamped steel |
| Rocker arm ratio: | 1.5:1 |
| Water pump (P/N 88894341): | Cast iron, long-style |
| Flexplate (P/N 14088765): | 14" |
| Recommended fuel: | 92 octane |
| Ignition timing: | 10'c1 BTDC @ 700 rpm |
| Maximum rpm: | 5500 |
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