Bugsy 47

2007 C6 LS2 6.0L with a manual transmission.
The Harmonic Balancer came loose and I obviously did not have it marked with the crankshaft. I have the proceedure to torque it back into place, but how do I determine the correct position rotationally on the crankshaft?

schizcat

Here are a few tips about the HB:
1) Replace it...do a search on here and you will see why. The HBs are known to fail.
2) No position necessary on the new HB. Just put it on.
3) Replace it

HBsurfer

And use a new bolt. The one you have now is shot. You can only torque it one time (torque to yield).

BigVette427

PowerBond Race Series, I believe PB1117SS is the p/n you need for an LS2. Forged 1045 steel, SFI 18.1 rated, dynamically balanced, unique rubber and bonding process, clear coated finish and laser etching serial number, 10X the push strength of an OE HB, rated up to 9,500 rpm. Get it for $200+tax shipped for free to your door from AutoZone right now with the coupon code on the front page.

https://www.corvetteforum.com/forums...d-warrior.html

Bugsy 47

OK, New HB and bolt, but now the oil pressure at idle is around 15 psi. When the RPM comes up, so does the pressure to around 50 psi, but what does the HB have to do with the oil pump?

irok

if all you have done is replace hb then oil pressure should not have been affected.did you do anything else at same time?

DubsAndSubs

Did you put the little seal back on the end of the HB?

BigVette427

Is that much different than what you remember before you swapped the balancer? GM does say it could get that low depending upon the temperature outside and how long it may be idling.



https://my.chevrolet.com/content/dam...tte_owners.pdf

Inspect around your crank bolt and oil pan to see if it's wet, and go from there.