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Installed my harmonic balancer on my freshly built 370 today. Used a tool from Proform. I installed it as far as my strength would let me and I feel like it bottomed out against the crank. However, there looks to be a gap between the balancer and timing cover. Looks like it isn't installed all the way.
Maybe I am just paranoid but is this gap normal?
The spec is for how much the end of the crank is inset from the balancer flange, without the bolt installed: .094 - .176. Easy to check if you take the bolt out. And you'd definitely have problems if there was no gap between the balancer and the timing cover.
The spec is for how much the end of the crank is inset from the balancer flange, without the bolt installed: .094 - .176. Easy to check if you take the bolt out. And you'd definitely have problems if there was no gap between the balancer and the timing cover.
This, I just did a balancer install on my ls3 and had the same question
the crank bolt hole is a blind bolt hole.....jus sayin.....
GM puts sealer on the bolt HEAD. Why? because oil can wick through the pressed area and the slot for a woodruff on aftermarket balancers. No sealer needed on the threads cause thats not where the oil would come from.
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Harmonic Balancer install. This normal? 
