Tune Up

I would appreciate your comments on my base line tune for a blown hemi...am I close?
480", 11 to 1 compression, 8/71 standard helix blower running 40% over, 20lbs boost.
Cam is .750 lift, 292 degrees at .050"
990 pump, 30psi pump sizer with a .065 pill
Main jet 90
high speed set at 67psi with .083 pill
Hat nozzles 6 x 40 plus 2 x 42 in front
Port nozzles 8 x 50
5 amp mag at 30 degrees

Regards
Dave

 

This is just my opinion, but I think your hat nozzles are a little small and your port nozzles a little big. have you ran this combo and it made 20 psi or are you estimating?
I would put 48-46-46-44 in Hat 50-46-44-44 in ports (front to rear)
you will probably find out you will have to change port nozzles to get all cylinders equal. Good luck!
Jay

 

Get your system flowed and it will save your ass in the long run.I Promise!!!

 

I agree w/ the above post call Gorr 949 589 9443, they are very good , and if they flow your fuel system they will give you all the info you need to tune your set up. It is cheap insurance !!!! just my 2 cents. Good Luck