What are the torque specs for 350 crank?

Top-End Torque Specs The Chevrolet 350 cylinder-head torque specification is 65 ft. -lbs. The intake installed onto cast-iron heads requires 30 ft.

How much torque does a 350 engine have?

However, the original Chevy 350 put out 295 HP and 380 lb-ft of torque. Another fun fact: the engine’s exact displacement is 349.85 cubic inches (5.7 L if you go by metric). But the “Chevy 350” makes for a much catchier name, if we do say so ourselves.

What is the torque spec for camshaft?

Hand tighten the camshaft cap bolts numbered: 5, 7, 2, and 4. Install all the bolts and tighten, in sequence, in 5-6 steps with a final torque of 100-125 inch lbs. (11-14 Nm).

What is the torque on 350 Chevy heads?

Always torque bolts in three equal increments

Bolts or Parts Lube or Sealer Torque to:
Cylinder Heads Engine oil (blind hole) Sealer (water jacket) 65 ft-lbs.
Rocker Studs (screw-in) Engine Oil 50 ft-lbs.
Oil Pump Engine Oil 65 ft-lbs.
Oil Pan Engine Oil 12 ft-lbs.

What is the torque specs for a flex plate?

Small Block Chevy Torque Specs

Fastener Type Torque Spec
Flywheel/Flexplate Bolts 65 ft.-lbs.
Pressure Plate Bolts 35 ft.-lbs.
Bellhousing Bolts 25 ft.-lbs.
Exhaust Manifold Bolts 25 ft.-lbs.

What are camshaft caps?

The Tombstone camshaft cap As with most camshaft caps, its primary function is retention of the camshaft to the cylinder head for structural support.

How many horsepower does a 5.7 Vortec have?

Performance Specifications. The Vortec generated 255 horsepower at 4,600 rpm and 330 foot-pounds of torque at 2,800 rpm, or the force required to move a vehicle forward.

What are the torque specs for a flywheel?

Small Block Chevy Torque Specs

Fastener Type Torque Spec
Cam Sprocket Bolts 18-20 ft.-lbs.
Harmonic Damper Bolt 60 ft.-lbs.
Flywheel/Flexplate Bolts 65 ft.-lbs.
Pressure Plate Bolts 35 ft.-lbs.

What are the torque specs for a Chevy 350 engine?

Low-End Torque Specs. Main-cap torque specification on the typical Chevrolet 350 two-bolt-main engine is 70 ft.-lbs. Specifications for the four-bolt-main are 70 ft.-lbs for the inner bolts, 65 ft.-lbs for the 7/16-inch outer bolts, and 40 ft. lbs. for the 3/8-inch outer bolts.

What should the torque be on a 327 engine?

SBC Crank Main Caps and Rod Bolts Main bearing caps on 327 engines should be torque in two steps to between 60 and 70 lb-ft, while 350 engines should be taken to 75. These are the caps on the crankshaft. Rod caps, or rod bearing caps, should be torqued to 45 lb-ft for the 327 engine and 35 for the 350 engine.

What happens if you over tighten the torque on a Chevy 350?

If you over-tighten, the bolt threads can be severely damaged and you risk breaking a bolt off inside the head. The heads require the correct torque and tightening sequence to prevent damage to the head gasket. Again, if you over-tighten them, the bolts may be broken off inside the block.

What should the torque be on a 351 engine?

The main bearings on the 351 engine are torqued to between 95 and 105 lb-ft-you’re going to need a good angle as well as a good grip on the torque wrench to hit that accurately. It should also be done in three steps. The other two engines aren’t as beefy, so they only get torqued to between 60 and 70, with two steps.