Just set my pulleys and the inner (P/S pump) belt up this afternoon. The plow pump bracket is 1/4" plate and has two thin S.S. washer between it and the head at each bolt hole. So the P/S pump bracket has a total stand off of about 5/16".
The lower bracket is hard against the factory mounting plate and the lock down bolt at the exhaust manifold is made up hard. The pulley stack on the water pump flange is up snug and the crank pulley is perfectly in line with it (as checked with a straight edge during assembly). So basically, the only point to make any adjustments in offset alignment is at the P/S bracket upper bolt.
I taped the existing washer stacks to the bracket during disassembly so I'm confident it is just as it was before.
Having said all that, it looks like it could use an additional 1/8" to 1/4" of spacer - however, as Belichek says "It is what it is".
It's a sucky job, never lost a belt or made any noise in 2 years I've had it - so, it's not coming apart again.
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Edited:
After some thought (and sleep) it became clear that the plow pump bracket is throwing the P/S pulley out of alignment - and the extra washers only add to the problem. The P/S bracket should be bolted directly to the head with no spacers.
I need the plow pump (and there is no way to put it on top of the P/S bracket) so all I can do is remove my extra washers and see if it lines up better.
