[Spridgets] A series crankshafts

[Dean Hedin]

----- Original Message ----- 
From: "Matt Hagopian" <mhagopian at hoppetool.com>
 
> Anyone have a suggestion for a good A series 1275 book?

You should read David Vizard's  "Tuning the A series Engine"

Personally I don't think there is much to be gained in usable rpm by lightening the valve train on the A-series.
You can fit slightly heavier springs and reach 7500.  

I would rather spend the titanium valve money on something else.