Crank pulley bolt

Do I need a longer crank pulley bolt when i do my cam swap? If so where can I find one?

Nope

Not longer....but if you go GM bolt you need a new one. It's one time use, torque to yield.

Yep. I new factory crank bolt its like $4.00

Do you need a new/longer bolt when you put in a new harmoninc balancer pulley? Sorry to jack the thread!

That was the OP's question. The pulley is part of the balancer...and requires a new bolt every time it's removed. You'll also need an installer and a torque angle wrench to reinstall it.

Installer? Propane torch to heat the snout up works fine to get it started on and then wrench it the rest of the way on with the old bolt. Torque angle can be guestimated if you know that 360 degrees is a full turn and 180 degrees is one-half. :laugh: Hopefully he can figure that out. Follow the GM torque procedure for tightening the bolt. :thumb:

Quote:

---

Originally Posted by RedHeartbeat

Installer? Propane torch to heat the snout up works fine to get it started on and then wrench it the rest of the way on with the old bolt. Torque angle can be guestimated if you know that 360 degrees is a full turn and 180 degrees is one-half. :laugh: Hopefully he can figure that out. Follow the GM torque procedure for tightening the bolt. :thumb:

---

I always use a torch

Cool. Use what you have, just make sure it's on ALL the way BEFORE the torque sequence is done with the new bolt.

Sorry I did'nt explain my situation correctly, I know you need a new bolt, and I know what the harmonic balancer is part of, but I am putting in underdrive pulleys and need to know if you need a longer bolt.