AFR all motor 12.9 -13.1 any lower is too rich any higher is too lean.
And reguardless of what the people say who have never tuned in their life, it will be a night and day difference depending on how you tune it.. make sure to mess with every part of the map u can, low and high cam, and the igiton.. as well.. before u do any tuning tho make sure ur timing belt is good, and ur timing is on mark, with ur dizzy set at 16 or 18 degrees..