[HWYSTR455]

I'm still curious what the idle vacuum is.

As I recall, cam is on the mild side, it should have plenty of vacuum for brakes.

The March Ultra kit is really just a conversion to wide belts, it's not one continuous belt, so it's not really a 'serpentine' conversion.

https://marchperformance.com/pontiac...ne-conversion/

The Pontiac one is on sale right now for $702. That's just a hair over a set of RARE pulleys.

I have one like that on the 442, major improvement over factory, it was $795 with the A/C setup and everything powder coated black. (I supplied Alt, PS pump, and AC compressor).


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