MY dyno and ET slip, What do they tell you?

The MPH looks really low, but then again your engine is done making power @ 5200 (and falls off fast), which is Really low as well.

2 questions:
What valve springs?
What intake?


I think the low RPM HP peak is hurting your ET with your current gearing. FWIW,my combo is VERY similar (except my Eddys are ported), and I cross the stripe @ 6700. So if you want to keep the engine the same you should probably go with less gear to keep the engine from running out of power on the big end....or give it more cam and port the heads so it can breath up above 6000rpm....just my 2 cents.