how much torque for head bolts?

[talon1616]

how much torque for 420a head on block.

 

[Ghost1984]

Let me google that for you

sorry I just had to, but to answer your question:






1. TORQUE ALL CENTER BOLTS TO 34 NM (25 FT LBS.), TORQUE THE 4 CORNER BOLTS TO 27 NM (20 FT LBS.).

2. TORQUE ALL CENTER BOLTS TO 68 NM (50 FT LBS.), TORQUE THE 4 CORNER BOLTS TO 47 NM (35 FT LBS.).

3. RE-TORQUE ALL CENTER BOLTS TO 68 NM (50 FT LBS.), TORQUE THE 4 CORNER BOLTS TO 47 NM (35 FT LBS.).

4. TIGHTEN ALL BOLTS IN THE SPECIFIED SEQUENCE AN ADDITIONAL 1/4 TURN.

Make sure you use the correct sequence. The center two bolts are 1&2, the ones to the right of them are 3&4, the pair to the left of center are 5&6, bounce to the other side, 7&8, etc, etc. Torque sequence is 1-10, in that pattern.

Hope this helps.

You will find that most people will tell you to search first because there are a TON of threads on these subjects made all the time.

 

[Army4g63]

Beat me to it..search search search