How do you tighten the head on a 350 Chevy?

Tighten the head bolt marked number “1” with the torque wrench. Stop tightening the bolt when the torque wrench signifies the bolt has 65 foot-pounds of torque. Torque each bolt in the order they are numbered. For example, the next bolt you will torque is number “2,” then number “3,” until you reach bolt number 17.

What should the torque be on a 350 Chevy head bolt?

Torquing is a bit tricky if you’re using the TTY bolts. For the LS1/LS6, torque all of the fasteners in sequence to 22 ft.-lb. Then, turn all bolts in sequence by 90 degrees. On the next pass, turn all of the bolts in sequence except for those on the front and the rear of the head by 90 degrees.

Where are the bolts on a Chevy head?

Move to the middle row of bolts and label them 17, 9, 1, 6 and 14 from left to right. Mark the lowest row of head bolts 16, 12, 8, 4, 3, 7, 11 and 15, left to right.

When do you re torque the head bolts?

Tighten each head bolt in the same sequence as before while the engine is still warm. If the engine has an aluminum cylinder head or block; however, do not re torque the head bolts; until the engine has cooled back down to room temperature.

How do you tighten head bolts on a 350 Chevy?

If you want to get rid of the LS’s TTY bolts, you’ll need a set of chrome-moly head studs. The head bolt tightening sequence is: B3-A3-B4-A2-B2-A4-A5-A1-B1-B5-C3-C2-C4-C1-C5. Torquing is a bit tricky if you’re using the TTY bolts. For the LS1/LS6, torque all of the fasteners in sequence to 22 ft.-lb. Then, turn all bolts in sequence by 90 degrees.

What’s the torque setting on a Chevy head bolt?

For TTY bolts, you lubricate the threads, torque the bolt to a specified setting and then turn the bolt a certain number of degrees past that torque setting. For an LT engine you torque all of the bolts to 22 foot-pounds, then turn the short bolts 67 degrees and the long bolts 80 degrees.

What’s the torque sequence on a Chevy 350?

The head bolt tightening sequence is: B3-A3-C5-C4-A2-B4-C6-C3-B2-A4-C7-C2-A1-B5-C8-C1-B1. All 1995 and earlier LT-series engines use the same head bolt torque (65 ft.-lb.) and tightening sequence as the original small block. GM switched to torque-to-yield (TTY) bolts in 1996, which require a slightly different approach.

How to tighten engine bolts the right way?

1 Tighten all bolts in sequence, and in two stages to a snug torque value of say, 30 Nm 2 Apply a 90 degree rotation to all bolts in the proper tightening sequence 3 Apply a further 90 degree rotation to all bolts in the proper tightening sequence

What is the torque sequence for a small block Chevy?

EZ Read simple diagram of the Small Block Chevy Cylinder Head Torque Sequence Small Block Chevrolet Head Bolt Torque Sequence Another EZ Read reference. This is the Head Bolt Torque Sequence (Pattern) for the Small Blocks, Mouse Motors or what ever you might lovingly call this motor.

How big of a torque wrench do I need for a 350 Chevy?

Move to the middle row of bolts and label them 17, 9, 1, 6 and 14 from left to right. Mark the lowest row of head bolts 16, 12, 8, 4, 3, 7, 11 and 15, left to right. Attach a socket matching the size of your 350 Chevy’s head bolts to a torque wrench. Set the torque wrench to 65 foot-pounds.

What does the head gasket do on a Chevy 350?

Between the head and the engine block of a Chevy 350 resides a head gasket. The head gasket is a seal; it keeps the coolant that is moving from the engine block to the head from entering the combustion chambers of the motor. When a head gasket fails, coolant can enter the combustion chamber, which is a bad thing.

What should I do to improve my Chevy 350?

Do the research before you purchase your upgrades. Get headers. The easiest performance enhancer on the Chevy 350 is a new exhaust system because it’s the weak point in the stock setup. The carburetor, manifold and valves are big enough to start with. The performance suffers because of the small exhaust setup.