Bolt spacers
My center line of fan belt measures 4 7/8" approx to intake.
I think the diff between your measurement and mine can be attributed to intake differences or where you measured from vs me.
What do you get from the machined surface of the head to the CL of the belt?
I measure 5 inches CL fan belt to machined surface of the head.
Is your Alt bracket OE?. It seems to have a bend toward the block at the alt ears. I don't mean the part of it over the small spacer to the water pump but the rest of the brkt. Mine is flat the entire way and is OE. (might be optical illusion)
Your alt adjuster arm is on the wrong bolt it should go on the lowest bolt.
My spacer between water pump and bracket is about 1/4" yours seems to be 3/8 or less. (which I presume resulted in the slight bend in the alt bracket in that location)
My alt spacers measurements and order (using a tape measure)
Head
11/16 head to alt roll-pin
5/8 Alt roll-pin (in rear alt ear) (In your photos of later year alt it is brass colored)
2-1/8 alt roll-pin to alt bracket
3/16 Alt bracket
1/2 forward alt ear
3/16 spacer
Bolt
My water pump pulley straight edge to alt pulley is dead nuts on.
My Timing cover is 2-1/2 wide. (It is later year with drivers side timing mark but a loose 67 without drivers side timing mark is the same)
The alt mounting boss that does not require a spacer measures 7/8 from back of water pump
The PS boss on the water pump on the drivers side is flush with the back of the water pump and is 1-1/2 wide.
I can not for the life of me figure how yours is off by so much.
