Quote:
Originally Posted by SirNik84
I wish I had access to the factory service manual for the 48 GMC I'm rebuilding with a co-worker. The rear seal is exactly like the seal on the 617, but when they talk about trimming the seal they tell you to use "a sharp blade. See Figure (whatever)"
Well in the picture they have a guy holding a picket knife that looks some thing like this.
General Motors Specialty Tool!
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Nice one - but you can see that it is just a lock knife - not a flick knife - it could be worse!
If you get the chance to measure the stiction of your GMC crankshaft once it is fitted I'd be interested to hear what it is... all ball park figures are interesting - with enough information we could even set advisory limits for future builders.