Well I disagree about the 30# injectors being too big, I knmow on my combo the 24# go lean up top I shift at 6300rpms, which is just about where the power falls off in cool weather. Icreasing the pressure and adjustable fuel pressure regulators are a joke, until you go about 70% - WOT the computer will only let it think you have stock settigns, yes you get a little extra fuel by increasing the pressure but the true way is to increase the injector. A buddy of mine for another board runs low 11's @ 119.6 mph out of a NA 306, with 9.2 compression he runs 30# injectors at 41psi the car made 337RWHP. It really depends on the rest of the Combo, that Holley will pull well into the 6000rpm range but that cam or anything with less then 228-230 degrees intake duration will die off before then, and 1.7's are fake lift, and actually they put added stress on the valve train it is better to go to a larger cam with 1.6's.
I feel a different cam would do alot for that combo, it is the heart of the motor and that B303 isn't cutting it, maybe a N-4 from AFM would be good, it will work with stock pistons and the rest of that combo very well bring out the flow in the TFS heads and Holley intake, the heads flow about 250cfm at .600 and the Holley flow about 250cfm.
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