07NBSChevy

iTrader: (1)

OK guys, thinking about adding a ATI Damper onto my 5.3. When do you start thinking about pinning it in place? My current setup has a max RPM of 6200 rpm and 6000 rpm shift points. Making around 440 Crank Hp and 425 Crank Tq. I have no plans for boost or really any other mods at this point, at least for the 5.3.

06murder

superchargers and prochargers are a must, and big turbo builds. imo i wouldnt worry bout it.

07NBSChevy

iTrader: (1)

awesome, thanks for the answer man.

KCS

iTrader: (20)

There's nothing keeping the balancer from spinning on the snout except for the press fit and the bolt clamp load. When you add extra load to the belt drive, like from a supercharger for example, the crank snout needs to be pinned into place to keep the balancer from spinning. In some aftermarket ignition setups, you may also want to pin the balancer in order to verify ignition timing with a timing light.

07NBSChevy

iTrader: (1)

Thanks for the info KCS. So I am assuming since I have not added any extra load to the pulleys, no plans for Boost, that I should be fine without pinning it. The stock Damper/Pulley was doing just fine, the darn rubber started to crack and small section has started to deteriorate, fall apart. I also talked to ATI and they said the same thing as you KCS, and that I should be fine without it. Tho, they did try and sell me their $150 pinning drill guide/jig kit.

mOtOrHeAd MiKe

iTrader: (8)

I always pin the crank regardless of application. It takes 10 mins and is cheap insurance.

badassbu

iTrader: (2)

Not needed because your not running a Supercharger, but we do most Corvettes and other cars that require alot of labor to get to it. This way if we add a supercharger later on we don't have to deal it.

Millenium Z06

This, my ATI un-keyed balancer spun off twice before I keyed it and locktited the ARP bolt. Now it doesn't move